Originally Posted By: Fraser434
You will be fine with T6 5W-40 in an LS engine (Tahoe), extensive used oil analysis has shown lower wear with 40 weight oils in LS engines. Patman did many used oil analysis back 15 years ago. The only downfalls, quicker emission catalyst degradation and hardly noticeable decrease in fuel economy from using heavier viscosity oil. Offset is an engine that will last longer.
I have T6 5W-40 in my ecodiesel, 17kW Generac generator, John Deere lawnmower. It's an all around a good oil, i'm not crazy on the CK-4 blend of T6, they took out the moly. May switch to another 5W-40.
How much quicker catalyst degradation? I ask because I run Delo 5W40 in my LS1 (Camaro), which probably has similar effects to T6. It's driven very few miles per year (< 1000), not concerned about mpg. Like the Delo, and it is rated for gas engines, or at least was a year ago (SM I think).
You will be fine with T6 5W-40 in an LS engine (Tahoe), extensive used oil analysis has shown lower wear with 40 weight oils in LS engines. Patman did many used oil analysis back 15 years ago. The only downfalls, quicker emission catalyst degradation and hardly noticeable decrease in fuel economy from using heavier viscosity oil. Offset is an engine that will last longer.
I have T6 5W-40 in my ecodiesel, 17kW Generac generator, John Deere lawnmower. It's an all around a good oil, i'm not crazy on the CK-4 blend of T6, they took out the moly. May switch to another 5W-40.
How much quicker catalyst degradation? I ask because I run Delo 5W40 in my LS1 (Camaro), which probably has similar effects to T6. It's driven very few miles per year (< 1000), not concerned about mpg. Like the Delo, and it is rated for gas engines, or at least was a year ago (SM I think).
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