gear/tranny oil 75w-90 or 80w90??! - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

apexi240sx · 11-04-2005, 03:31 AM

Im running redline syn 75w-90 GL4 currently on a s14 sr20 transmisson but the shifting is rough! it wasnt rough when i barely put THAT oil in though.... today i went to the auto parts today and the guy suggested i run a bit thicker oil since the trans is older, so yea i bought some 80w-90 GL-4 generic oil, and i blended in a 1/4 of a qt into the existing redline oil and the shifting loosened up a bit..... so did i waste $$ on redline oil which is too thin??

11-04-2005, 03:31 AM	#1
apexi240sx Zilvia Member Join Date: Sep 2004 Location: Las Vegas, NV, San Fernando Valley, CA Age: 43 Posts: 255 Trader Rating: (0) Feedback Score: 0 reviews	gear/tranny oil 75w-90 or 80w90??! Im running redline syn 75w-90 GL4 currently on a s14 sr20 transmisson but the shifting is rough! it wasnt rough when i barely put THAT oil in though.... today i went to the auto parts today and the guy suggested i run a bit thicker oil since the trans is older, so yea i bought some 80w-90 GL-4 generic oil, and i blended in a 1/4 of a qt into the existing redline oil and the shifting loosened up a bit..... so did i waste $$ on redline oil which is too thin??

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