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dbvettez06 · 01-12-2020, 12:01 PM

Uhhh my dumb. Owners manual says 5 40 for track use age. I can blame it on being a Veteran ��
For street usage I’ll do the GM 5w30 just to keep the extended warranty people happy.

01-12-2020, 12:01 PM	#6
dbvettez06 Drives: 2001 corvette Z06. 2018 ZL1 Join Date: Jan 2018 Location: western colorado Posts: 90	Uhhh my dumb. Owners manual says 5 40 for track use age. I can blame it on being a Veteran �� For street usage I’ll do the GM 5w30 just to keep the extended warranty people happy.