This same technology can also be beneficial for biobased gear lubricants, chain and cable lubricants/greases, and other applications for equipment used in sensitive environmental areas. 91 0 obj Use this chart to help guide your component selection. 3 !1AQa"q2B#$Rb34rC%Scs5&DTdEt6UeuF'Vfv7GWgw ; !1AQaq"2B#R3$brCScs4%&5DTdEU6teuFVfv'7GWgw ? The superior benefits of PAOs enable formulators to meet these challenges. 0000000776 00000 n Our team of experts answer the most frequently asked questions. To correctly identify what type of fluid is needed, the end-user must know the minimum lubricant requirements for that piece of equipment. 56 0 obj<>stream The 2002 U.S. Farm Bill Act mandates government agencies to purchase environmentally safe, biobased (vegetable oil) lubricants. Adobe PDF Library 10.0.1 Polyalphaolefin is by far the most common major synthetic base oil used in industrial and automotive lubricants. As the chart above clearly demonstrates, the difference in viscosity as a function of shear rate is magnified as temperature decreases. PDF Chemical Compatibility Table - Geotech Env This article will discuss the most common synthetic fluids aiming to help end-users make the right choice for their applications. More uniform in structure than conventional PAO basestocks, they provide similar advantages of high viscosity indices, excellent low-temperature fluidity, and shear stability but with additional thickening ability. Oils made with PAOs demonstrate an inherently high viscosity index and maintain excellent low-temperature performance, compared with mineral oils. <>/ExtGState<>/Font<>/ProcSet[/PDF/Text]/XObject<>>>/Rotate 0/Thumb 161 0 R/TrimBox[0.0 0.0 792.0 612.0]/Type/Page>> Synfluid PAOs have very narrow molecular weight ranges, which are attributed to our high-purity feedstocks. The vast number of high-quality base oil choices can be confusing when balancing fuel efficiency and wear protection. H}vUwUw^MwS`y{vV|&s@@9H"61O}/oi~3}\y{)2| U:iY?_/}|(P^@m`kbu_?>sG-rj?~-r[?wp_2W,)!BkBkB*.]Y""ZBmSB&,zB}B+!B]}u}>gSSS Some of the advantages of PAO-based lubricants are summarized in Table 5. Polyalphaolefin (PAO) fluids are the most common major synthetic base oil used in industrial and automotive lubricants. General properties of low- and high-viscosity conventional PAO, and metallocene-catalyzed mPAO basestocks, are shown in Table 4. Use of PAG-based fluids and lubricants began to extend to other applications, first to quenchants and textile lubricants, then to many other lubricant categories, including anhydrous fire-resistant fluids, gear, compressor, and turbine fluids. These synthetic hydrocarbons are designed to provide superior lubrication performance over a wider operating-temperature range than petroleum oils and typically are less volatile. The relative availability of olefin monomer was certainly a consideration (i.e., 1-octene vs. 1-decene). 0000034812 00000 n Because metalworking processes can generate heat, these properties give you an intrinsic safety margin over the more volatile oils that are typically used. 11 46 You can see a medical doctor for your burn, but Dr. Ken Hope can help with your base oil and formulation challenges. PDF CHEMICAL RESISTANCE CHART - U.S. Plastic 0000004079 00000 n 0000036701 00000 n 273 0 obj <> endobj xref 273 24 0000000016 00000 n 0000003221 00000 n 0000036005 00000 n polyalphaolefin compatibility chart - amcsalud.com JFIF Adobe d ##''$ %'% $('++++'()02520)7;;;;7;;;;;;;;;;;;;;; ""2(! application/pdf At that time, both fires on U.S. Navy ships and aircraft were occurring due to the use of mineral oil-based hydraulic fluids. CHEMIC ATIBILITY 3 Updated 7/2/13 CHEMICALS METALS PLASTICS, ELASTOMERS & LEATHER A: Excellent, B: Good, C: Fair to Poor, D: Not recommended Address specific system site conditions (potential for water ingression). Tiny bubbles these can cause major issues, such as shorter lubricant life, increased fluid compressibility, lower fluid viscosity and cavitation. The primary difference between these two products is pour point. xref Compatible with seals and paint used with mineral oil, no need for change at all operating temperatures. Process Chemical Compatibility Guide In our experience, some commercially available additive packages are designed to take better advantage of a specific base stock. This resistance to fire and flame propagation improves the margin of safety in the event of a hydraulic leak. PAOs are uniquely suited to aviation hydraulics because of the inherently high flash/fire points and low volatility. Their polymerization can benefit greatly from the development of highly active and highly selective catalysts, as the catalysts strongly affect their properties. This is compared to a conventional hydraulic fluid in the chart below. Research at the U.S. 2014-03-26T09:16:41-05:00 0000002192 00000 n @0NI$$I)I$JRI$I$$I)I$JRI$'I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$L$I$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$IJI$RI$I%)ekvEJX'I$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJL'I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI2tI%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RI$I%)$IJI$RID4>))I$I$$I)I$JRI$I$$I)I$JRI$I$$I)I$JRI$I$$I)I$JRI$I$$I)I$JRI$I$$I)I$JRI$I$$I)I$JRI$I$$I)I$JRI$I$$I)I$JRI$I$$I)I$JRI$I$$I)I$JRI$I$$I)I$JRI$I$$I)I$JRI$I$$I)I$JRI$I$$I)I$JRI$I$$I)I$JRI$I$$I)I$JRI$I$$I)I$JRI$I$$I)I$JRI$I$$I)I$JRI$I$$I)I$JRI$I$$I)I$JRI$I$$I)I$JRI$I$$I)I$JRI$I$$I)I$JRI$I$$I)I$JRI$I$$I)I$JRI$I$$I)I$JRI$I$$I)I$JRI$I$$I)I*4V~u. Keys for Proper Grease Selection - Machinery Lubrication As the chart above shows, lower-viscosity oils can be made without sacrificing low volatility by using PAO base oils. High energy costs have hit both businesses and consumers hard, and the pressure is on to conserve. In drivetrain lubricants, reducing the traction coefficient and lowering viscosity are key ways to increase fuel economy, but lower viscosity must be balanced to provide adequate wear resistance. REFERENCEPAGES 1-800-833-7958 www.geotechenv.com fax303-322-7242 sales@geotechenv.com ChemicalCompatibilityTable For All Non-Metals For Metals R=Resistant E<2milsPenetration/Year PDF 304 Stainless Steel Chemical Compatibility Chart from ISM - Industrial Spec Polyphenols and Foods That Are Good Sources for Them - Verywell Fit The superior low-temperature flow characteristics of PAOs ensure faster coating of critical parts in the compressor during startup, minimizing wear. The second step is the hydrogenation of the remaining double bonds (unsaturation) in the oligomer and subsequent distillation to separate the unreacted monomer and light-viscosity grade PAO. %PDF-1.4 % Jun 09, 2022. polyalphaolefin compatibility chart . One example is the advantage PAO has over mineral oil in the area of high-temperature stability. from application/x-indesign to application/pdf Absolutely! Driveline specifications continue to become more stringent. Getting the air to release from the lubricant is vital to allowing the lubricant to do its job. Lower-viscosity PAOs have a unique property of biodegradability. From then on, the company introduced 1-dodecene-based PAOs in 1995, which have grown steadily in popularity. Specific tests such as the Volkswagen T-4, TDI and Peugeot TU-5 have increased the demand for higher-quality base oils. In addition to these properties, weve also seen a significant reduction in the traction coefficient as compared to conventional high-viscosity PAOs. A solution, developed by Renewable Lubricants Inc. (RLI) with assistance from Chevron Phillips Chemical, is the use of Synfluid PAOs combined with biobased oils and specially designed additives. Note the differences between a VHVI mineral oil and Synfluid Polyalphaolefin (PAO) 5 in the Scanning Brookfield chart below. Ethylene is produced by cracking either crude oil or natural gas. <<264FCCC095A7AD46A42A03D56AD5B96C>]>> endobj The grease is then inspected for visual abnormalities and can be tested for penetration and four-ball wear change. Chemical Compatibility Guide PAG lubricant basestocks can be designed to be water-soluble, water-insoluble (partial mineral oil compatibility), or oil-soluble, depending on the selection of starter molecules and monomers to be used in producing the polymer. The PAOs . There are many advantages! A formulator choosing the right base oil is like a craftsman choosing the right tool it needs to fit the job. You would expect the viscosity to improve with a lower pour point, but the opposite is true. PDF Synthetic Oil Viscosity & Compatibility Chart - DULUB Sorry, we couldn't find anything that matched your search, PAO-based lubricants generally resist creep and water washout and offer good lubricity across a variety of substrate material pairings, including metal-to-metal and metal-to-plastic. The relationship between antioxidants (A.O.) Ethylene is produced by cracking either crude oil or natural gas. More importantly, however, was product performance. 0000103071 00000 n Low molecular weight compounds will degrade other performance requirements, such as volatility, flash and fire points. 178 0 obj xmp.id:B2FC01B10F2068118083E936383AAE83 It is a synthetic hydrocarbon (SHC) that mimics the best hydrocarbon (branched) structure found in mineral oils. Polyolefins, including poly (ethylene), poly (-olefin), poly (styrene), and poly (dienes), are the most widely-used polymer materials. As temperature increases, a higher VI fluid will give increased fluid film thickness, which could result in lower wear. This clearly shows that a PAO base oil substitution can significantly lower operating temperatures of the gear box and extend the required maintenance interval. We look forward to helping you consolidate your grease cabinet! Since then, the company has expanded PAO as well as ethylene production, both basic building blocks for many petrochemical processes. PDF GREASE COMPATIBILITY CHART - PetroLiance Ethylene glycol dimethacrylate is the enoate ester that is the 1,2-bis (methacryloyl) derivative of ethylene glycol. 0000017608 00000 n endobj LDPE is defined by a density range of 0.910-0.940 g/cm3. Chemical Compatibility Guide; what chemicals to use; guide for chemical uses; general guideline for pump material selection; material chemical compatibility Adding a PPD will reduce the pour point of a mineral oil, but it still will not achieve the performance of a PAO. However, nothing is perfect, and polyalphaolefin base oils do have a few negative characteristics. So you can look to Synfluid PAO to help you formulate lubricants with both environmental benefits and outstanding performance properties. Synfluid PAOs, in addition to NSF H1 qualification, are also available as kosher approved products. In addition to the low temperature performance demonstrated by CCS, the volatility and viscosity index of the PAO 5 and 7 blend are improved over traditional PAO 6. Process Chemical Compatibility Guide Whether for automotive or industrial applications, these products can improve performance and solve problems. Our safety, technical and regulatory product information, as well as company and industry resources. PAG-based lubricants have excellent viscosity indices significantly better than PAO-based lubricants of the same viscosity grade. The VI trend is only true for a family of base oils. The benefit of a lubricant to the end user is an important question, and the behavior of a base oil is only one of many variables affecting the performance of a finished formulation. 0000135087 00000 n Understanding this advantage is important for optimizing the performance of todays fluids and improving the life of equipment. PDF Chemical Compatibility Guide - Graco <>>> hb```b``nd`c``. Finally, greater oxidative stability extends oil life and keeps the compressor clean for a longer service interval. Benefits of the new system are a much higher viscosity index (VI), superior pour points and improved low-temperature fluidity, all of which contribute to improved energy efficiency. Kinematic Viscosity @ 100C (cSt) Kinematic Viscosity @ 40C (cSt) Pour Point (F) Molecular Weight. endobj endobj The difference in the CCS viscosity at -35C is 15 percent, which is substantial. Well be happy to help you solve your lubricant concerns. The chart below shows biodegradation test results for Synfluid PAO 2.5, 4 and C12 Dimer, which indicate that these products could qualify as inherently biodegradable according to the ASTM D5864 test method. package, an optimal PAO formulation will be different than that of mineral oils. A similar approach can be applied to your formulations or applications. June 16, 2022; Posted by usa volleyball national qualifiers 2022; 16 . The chart below shows an example of an engine oil formulation with two different quality PAOs. Furthermore, we are able to achieve these properties with non-decene alpha olefin feedstocks while providing advantages over existing products and extending feedstock supply. PAG- and PAO-based lubricants rarely compete in industrial applications. Aviation hydraulics require the use of PAOs because of the inherently high flash/fire points and low volatility. We were the first to offer these materials to the marketplace, and many years of experience with 1-dodecene-based PAOs has helped us to refine the process and deliver very high-quality products. After the formation of the Chevron Phillips Chemical joint venture in 2000, a 10 KTA PAO unit expansion followed soon thereafter. The more EO monomer in the basestock, the more water-soluble; the more PO monomer, the more water-insoluble; and the more BO monomer, the more oil-soluble the basestock is. Chevron Phillips Chemicals proprietary manufacturing process and monomer selection combine to produce the groundbreaking performance characteristics that our customers expect from Synfluid polyalphaolefins. The key to unlocking the full potential of your formulation requires using the right combination and concentration of antioxidant and Synfluid PAO. Applications for PAO-based lubricants expanded to circulating and gear oils. California Transparency in Supply Chains Act Disclosure. Give us a call, and well be happy to discuss our high-quality Synfluid PAOs with you. It is not reactive at room temperatures, except by strong oxidizing agents, and some solvents cause swelling. 0000000016 00000 n One way to achieve a higher VI base fluid is to shift from a decene-based PAO to a dodecene-based PAO. They may also be used to develop high-performance, environmentally friendly lubricants. The chart below shows the effect of two different shear rate viscosity determinations on three different fluids (4 cSt at 100C) and the dramatic differences between them. Give us a call, and well be glad to discuss your applications and provide technical help. 0000004340 00000 n High molecular weight compounds will degrade pour point, cold crank and other low-temperature viscometrics. PDF Chemical Resistance Guide - Gilson Eng Chemical Compatibility Guide 0000003107 00000 n 0000002388 00000 n To improve seal compatibility of PAO-based lubricants, an ester is added to . 1 . The plot below shows a comparison of the air release times exhibited by ISO VG 320 blends composed of our Synfluid mPAOs, and traditional HV PAOs with PAO 8 cSt. polyalphaolefin-based lubricants. The PAOsare produced through synthesizing oligomers of either 1-decene or 1-dodecene. The mineral oil has both lighter and heavier molecular weight materials. Additives will increase the overall viscosities; however, PAO base oil leaves plenty of room for meeting specifications. 2023 DuPont. With todays oils requiring a higher-quality lubricant basestock to meet more stringent tests, polyalphaolefins are perfectly tailored and consistently manufactured to meet the challenge. endstream PAOs are used extensively in automotive fluids as well as hydraulic, gear and bearing oils, working in extremely cold climates or hot applications. These synthetic hydrocarbons are designed to provide superior lubrication performance over a wider operating-temperature range than petroleum oils and typically are less volatile. For other applications, PAOs safe and non-toxic nature allows them to be used where incidental food contact certification or kosher approval is necessary. I love to talk about food, and I love to talk about Synfluid PAO! H*T034R0 BC0k ` f- Sustained operations at elevated temperatures increase the rate of oxidation and other degradation reactions. Polyalkylene glycol (PAG) and polyalphaolefin (PAO) are two synthetic lubricant options for industrial applications. With regard to performance, PAOs are able to maintain excellent thermal and oxidative stability at high operating temperatures in addition to the low-temperature benefits for which they are known. Business never stands still, but you can always count on dependable Chevron Phillips Chemical Synfluid PAOs. 184 0 obj To mitigate this effect, We recommend taking a look at Synfluid PAO 5 and PAO 7, due to their excellent Noack volatilities of 5.5% and 2.3%, respectively. A relatively simple test, the criteria of the test varies depending on which grease manufacturer you are dealing with. endobj You see, the jump hurts the pump.. The dodecene-based products offer lower volatility at comparable viscosities to the decene-based products. Working in conjunction with the Union Carbide Chemicals, Plastics Company Inc., and the Mellon Institute of Industrial Research, the USNRL developed the first water-glycol, PAG-thickened, fire-resistant hydraulic fluid (WGHF). RESISTANCE CHART RATINGS CHEMICAL EFFECT A No effectExcellent B Minor effectGood 2. Certainly! converted False With the powerful combination of MOLYKOTE Specialty Lubricants and DuPont Polymers, our understanding of grease-polymer compatibility allows our customers the unique ability to select products faster and move through validations with confidence. The chart below shows rotary bomb (ASTM D2272) results between Synfluid PAOs and some mineral oils. 0000134768 00000 n There are several systems where we have observed a reduction in the operating temperature compared to mineral oils, including transmissions, engines and heat transfer applications. Some properties such as Viscosity Index (VI) or C viscosity can approach those of PAOs. The differences in flash, fire, volatility and viscosity highlight the flexibility benefits of using a Synfluid PAO. The tests used below were the Cold Cranking Simulator for high shear (about 10-1 sec-1) and Brookfield viscosity for low shear (about 2 sec-1) each measured at -20C. PAG polymers, first discovered more than 150 years ago, saw their breakthrough application occur during World War ll. !DOaBADOaB&=&=U!z Since we use essentially pure 1-decene or 1-dodecene to produce Synfluid PAOs, there is a narrow isomeric distribution for each oligomer. They're found in everyday food and available as supplements. BioPreferred is a registered service mark of the United States Department of Agriculture. However, Synfluid PAOs can be formulated to be biodegradable and are well known for standing out from conventional base oils. 0000001605 00000 n 2023 Access Intelligence, LLC - All Rights Reserved. However, Group III base stocks are derived from multiple feedstock choices and processing technologies, which create variability in the properties. Youre not kidding! While pour point is one consideration, a formulator has to take into account the total specification needs. Understanding PAG- and PAO-Based Lubricants - POWER Magazine 168 0 obj The chart below shows the exceptional fire point advantages of using a 1-dodecene based PAO. Great question! PPDs act only on linear or waxy compounds, and these characteristics are absent from PAOs. (2;2222;;;;;;;;;;;;;;;;;@@@@@;@@@@@@@@@@@@@@@@@@@@@ " B When you compound this with difficult operating conditions, such as extreme temperatures, high loads or extended operations, a high-quality base oil may be necessary. Level of maintenance and labor available. Adobe InDesign CS6 (Macintosh) Compatibility testing includes heating and holding grease for a specified time at assumed operating temperature for mixtures of 10:90, 50:50 and 90:10. The rotary bomb bench test is a strong predictor of how base oils will perform in many automotive and industrial applications. Because of their controlled structure, PAOs do not contain lighter, more volatile (small) hydrocarbons. Due to this incompatibility with many but not all PAG lubricants, system change-outs from mineral oil to PAG-based lubricants may be costlier and take additional time. 0000017423 00000 n PAO quality is unrivaled in the industry. Our unique PAO 2.5cSt further improves flash/fire points by as much as 10 percent over other commercial polyalphaolefins. PAOs are the most common synthetic basestock used in industrial and automotive lubricants. endstream endobj 12 0 obj<>/Metadata 9 0 R/AcroForm 13 0 R/Pages 7 0 R/Type/Catalog>> endobj 13 0 obj<>/Encoding<>>>>> endobj 14 0 obj<>/ColorSpace<>/Font<>/ProcSet[/PDF/Text/ImageC]/Properties<>>>/ExtGState<>>>/Type/Page>> endobj 15 0 obj[/ICCBased 38 0 R] endobj 16 0 obj<>stream The limits on lowering the viscosity grade are tied to the base oil properties. The chart below shows that the PAO has a higher specific heat, which means that the PAO is better at absorbing heat. 0000041967 00000 n 0 But wait, it gets even better! Not Available - Chemical compatibility information is not available at this time. xmp.iid:00801174072068118083E936383AAE83 Air is usually a really poor lubricant, so your frustration is understandable! California Transparency in Supply Chains Act Disclosure. These oligomers are distilled and hydrogenated to yield specific molecular weight ranges that meet the viscosity grades that are desired. 1 - High Resistance 2 - Limited Resistance 3 - No Resistance . PDF Chemical Compatibility Guide - Polyurethane - SpillTech Furthermore, thermal conductivity at 300F for PAO 6 is 0.085 compared to 0.071 Btuft/(hft2F) for an equiviscous mineral oil, which means that the PAO can conduct 20percent more heat than the mineral oil for better heat dissipation. However, these products have demonstrated unique advantages in Sequence IIIF, VW T4 and TDI tests due to many of the other properties that are inherent in them. %PDF-1.4 % The table below shows a comparison of conventional hydraulic oils with the new PAO biobased lubricant from RLI. Lowering torque reduces the energy requirements of the equipment and improves grease distribution. We offer a wide range of solutions essential to your products. The combination of air and oil can often lead to foaming issues. <> However, unlike foaming, entrained air can be a difficult problem to treat with additives. 99 0 obj trailer Remember, PAOs are carefully designed, not refined. <> 165 0 obj 0000048689 00000 n Absolutely! The results indicate that the CSC 980 Tan grease has a running torque of 3.77 N-m versus 10.9 N-m for the same grease with an alternate base oil. This new system improves the viscosity properties, which should be more energy conserving and achieves the ultimate biodegradation rating ASTM D5864-PW1. 0000140193 00000 n What is most interesting, however, is the low-temperature performance: The C10-based PAO 6 has the lowest pour point by over 20C, but the CCS viscosity for the C12-based PAO 5 and 7 blend is better. The lower volatility decreases oil replacement costs by reducing oil consumption. PAG-based lubricants are commonly used in compressors, gearboxes, air conditioning systems, metalworking, quenching, and hydraulic systems where fire-resistance or environmental acceptability are required. As a result, the jump in the viscosity adversely effects the ability to pump at low temperatures. polyalphaolefin compatibility chart. PAO-based greases are typically used at temperatures over 100C because of thermal and oxidative concerns. Buna-N Satisfactory for "O . The uniquely beneficial quality of PAOs has been demonstrated in a series of European engine tests. . startxref The term synthetic hydrocarbon (SHC) is a general term. Polyglycols-40 to 125 C 4 0 obj <> endobj When unsure of a components precise identity or version, the manufacturer From left-to-right, Ken Hope, General PAO Technical Services Manager; EngSoon Ho, Asia PAO Sales Manager; Emanuele Quattrone, EMEA PAO Sales Manager; Katie Clark, Americas PAO Sales Manager. Three stringent test standards required by Volkswagen and Mercedes-Benz engines show the impact of the variability of Group III oils: This data illustrates lot-to-lot variability, which has been recognized for the Group III oils. One application in which they have not worked well is in high-temperature (high-pressure) reciprocating air compressors where valve deposits have been an issue. If a polyurea-based thickener is chosen in conjunction with a synthetic base oil, such as a polyalphaolefin (PAO), there is no compatibility risk to be expected.