[s-cars] G50 is GL-5 or GL-4 and Amsoil in tranny

[Trevor Frank]

GL-5 is bad for syncro's in most cars. I have talked to a few oil guy's and they told me that often people will put GL-5 into there cars thinking it is an improvement.  It doesn't provide to right properties, too slippery for the syncro's, this will lead to premature ware and most likely issues with cold/warm weather shifting.  Especially in the heavily loaded gears like 1st and 2nd.

I used to repair old vw/porsche transmissions and had many syncro's to replace when GL-5 type oils came out.



-----Original Message-----
From: Vincent Frégeac [mailto:vfregeac at sympatico.ca]
Sent: Saturday, July 19, 2003 7:49 AM
To: ''S-Car-List (E-mail)'
Subject: [s-cars] G50 is GL-5 or GL-4 and Amsoil in tranny


Anyone knows if the the Audi G50 for our tranny is a GL-5 or a GL-4? My mech filled the tranny and the diff with 75W90 GL-5. It should be OK for the diff as the Redline recommended oil for the diff is also a 75W90 GL-5. But I'm scared for the tranny as the GL-5 was said to make the synchro slip on the 90Q20V which could lead to serious damage to the gear. Is it the same with the 01E? Should I change it asap? The gear are still shifting OK, at least as well as with the 125Kmiles old oil but I would have expected smoother shifting with the new oil.

BTW, have anyone tried the Amsoil 75W90 GL-4 MIL-L 2105 in the tranny? This oil is readily available when I have to wait may be a week for Redline MTL.



Vincent
'96 //S6

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