See more nifty technical digest-type stuff here. Quoted from a post by MolaKule at the site linked below. (Data derived from “Synthetic Luibricants and High-Performance Functional Fluids,” Ch. It will have a viscosity of 25.9 cSt and VI of 141. It will have a viscosity of 26.3 cSt and VI of 168. It will have a viscosity of 25.2 cSt and VI of 153.ġ5% of ditridecyl phthalate ester (a diester or may contain a polyol ester) It will have a viscosity of 26.9 cSt and VI of 148.Ģ0% of diisodecyl ester (a diester or may contain a polyol ester) It will have a viscosity of 14.2 cSt and VI of 101.ġ5% of diisodecyl ester (a diester or may contain a polyol ester) It will have a viscosity of 15.48 cSt and VI of 140. It will have a viscosity of 14.45 cSt and VI of 157. It will have a viscosity of 14.2 cSt and VI of 102. A mineral 75W90 Gear Lube formulation will contain: This is for GL-5 gear lubes for mineral, synthetic, and blend: Here's where I'm coming from with my statements about gear oils and what they're made of. "One size fits 'US' - all of us" ("us" means "Subs' - 1 material in the factory, 1 material in the shops - less chance of errors) Maximum Kinematic Viscosity: 45-2000 SSU (6 to 420 cSt) Filter Efficiency.
#2015 WRX RECOMMENDED CST VISCOSITY DOWNLOAD#
What they spec is what they sell, what they sell is what they spec. Download entire 2014-15 Catalog (PDF - 493 pages, 8 MB) Download Acrobat. Remember - SUB set up their specs with what they had available from whatever manufacturer and are interested in maintaining the LEAST possible spread of components ("lean" inventory). I would BET that the oil for their new DIESEL isn't 5W-30 though, just based on what I know about oil. Subaru replaced many 2014-2015 FA20DIT WRX and Forester XT blocks. They tend to go to 10W-30 or 40 in the summer months there even for 5W-30 or 5W-20 engines. Subaru recommends using Genuine Subaru oil and 0W-20 viscosity in all of. IF it were for an engine, then it matters a lot more because of starting lubrication, but then we might be talking about, say, Phoenix in the summer where the temp doesn't drop below 100F at MIDNIGHT. PHYSICALLY - the 2 perform about the same except that the syn oil would be better in very low temps (like Alaska in the winter - where the non-syn oil might act like toothpaste, the syn will act like honey)
#2015 WRX RECOMMENDED CST VISCOSITY MANUAL#
It's EXTREMELY unlikely that you could do any damage to the system by using 75 in place of 90. On the figure eight, our CVT-equipped tester split the difference between the 2015 WRX manual and the 2014 model, doing the deed in 25.5 seconds at 0.73 g average - 0.2 seconds slower than the. Aside from the hypoid gear faces, nothing in there is under that much contact pressure (and the side bearings don't "care" as long as they have some lube). The 80 conventional oil does the same but starts "thicker" (80 compared to 75) It REALLY doesn't make that much difference because they are not under pressure - it's all "splash". The difference is that the syn oil starts with a lower initial viscosity (75) which increases as the temperature increases (without looking up the spec I can't tell you what the changeover temps are) to 90. Kinematic Viscosity 400C cSt ASTM D445 56.3 Kinematic Viscosity 1000C cSt ASTM D445 10.
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