0W40? - ZR-1 Net Registry Forums

Hib Halverson · 09-07-2022

Starting in 2019, GM changed to a 0W40 engine oil for all Corvette engines except the LT6 which uses a 5W50.

Has anyone tried a 0W40 in the first generation LT5?

I would think that the same two major advantages?1) oil gets to bearings more quickly on cold starts and 2) better thermal stability during aggressive engine operation?that GM gained with using a 0W40 in the 2G LT5 and the LT2 woulid be useful in the original LT5.

09-07-2022	#1
Hib Halverson Join Date: Jun 2005 Location: CenCoast California Posts: 899	0W40? Starting in 2019, GM changed to a 0W40 engine oil for all Corvette engines except the LT6 which uses a 5W50. Has anyone tried a 0W40 in the first generation LT5? I would think that the same two major advantages?1) oil gets to bearings more quickly on cold starts and 2) better thermal stability during aggressive engine operation?that GM gained with using a 0W40 in the 2G LT5 and the LT2 woulid be useful in the original LT5. __________________ Hib Halverson Technical Writer former owner 95 VIN 0140 current owner 19 VIN 1878