![]() The synthetic 75w90, at least the one made by Molakule, does not contain any VII so there should be very little or no shearing at all with use. Secondly, there aren’t any dino 75w90 lubes that I know of, at least. Just look at the recent VOA of GL-4 Redline MTL that was posted. I know that the 75w90 VW/Audi factory fills with is a GL-4 rated, synthetic lubricant, and this sample surely does not show a GL-4 level of anti-wear additives. First, the discussion of whether or not this sample was a 75w90 to begin with should cease. In other words, there was very little shearing of this fluid during the duration of its use.Īlso, your statements are flawed. As the gentleman in the above thread went and purchased a sample of the oil as a result of his interest and had it tested, the viscosity reading was 6.3. The end-of-test viscosity from this sample is 5.9 cst, per my calculator. It surely can’t be an error that two identical transmissions, from two unrelated cars, contain the same type of fluid? There you have it, another 02J transmission showing a similar UOA result with the factory fill. **the 75-90 viscosity of common gear / manual transmission oils is IMO not suitable for use in VW transmissions where G52 is specified.** Point being that even though Motul Gear 300 has an outstandingly low pour point (flows to -60). : New G52 = 6.3, G52 after 43,000 miles = 6.4Īdditionally, in these crazy unseasonably warm temps the Motul Gear 300 shifts fine - but early yesterday morning when temps were in the mid 40s - the first few shifts with Motul Gear 300 were noticably more effortful than the G52 ever was - even at below 0 temps. OEM G52 did not shear down at all in 43,000 miles of use: So, I went to the dealer this morning, bought a liter of G52, then drove to my local CAT fluid analysis lab and watched as he tested its viscosity right in front of me.Ħ.3 = OEM G52 (part numbers G052726A2 / G05272601) My thinking was that either the OEM oil sheared way down OR the OEM fluid started out much lighter than the 75w-90 oils that many of us are commonly replacing G52 with. I had the lab perform a VOA on the Motul Gear 300 I put in and its = 14.0. The CAT lab ran the viscosity test twice because I listed the oil as being a 75w-90 - which G52 clearly is not. of the factory fill (G52) in my 2004 Golf TDI 5-speed after 43,000 miles was 6.4. Obviously, based upon your success w/ Redline MT-90 in this transmission, Redline MTL should work fine.Īnd yes, I would suggest draining the MT-90 out ASAP and replacing it with something much thinner, as the transmission was designed to tolerate such a heavy lubricant. The correct replacement fluid for this transmission should’ve been Molakule’s MTFGlide, the Genuine VW fluid, or possibly Redline MTL, even though it’s thicker. The decreased shifting performance may’ve been a result of the friction modifiers wearing out and may’ve been unrelated to the slight or no shearing of the fluid. Can a 75w90 possibly shear to 14.5 cst, when 75w90 lubricants are extremely shear stable? Very unlikely. Obviously, this report shows that the original factory fill was the latter, not the former! Some come with a GL-4 75w90, while others come with a lubricant having an automatic transmission fluid like viscosity. ![]() Not all VWs come filled with the same 75w90 manual transmission lube! We go through this silly discussion every time someone posts a VW Manual Transmission Analysis. ![]()
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