2019 Canadian Truck King Challenge
The powertrain in the GM twins (6.2L V8/10 speed) is certainly impressive! Good mpg and class leading power. Too bad they didn't have an E-Torque Ram to test, I wonder what difference it would have ...
Forum Discussion
ShinerBock wrote:ksss wrote:
I have never owned a 6.2L in a pickup, I have several friends that have them. They run midgrade, which here is 87 they have never had issue. I have an LSA in my Camaro. I run 91 in that only, we don't have 93 octane here. I don't know what the fall off in mpg is, but unless the pickup can sense the octane level and detunes itself, there is no more energy in a gallon of 91-93 than there is in a gallon of lessor octane. The knocking, that is addressed by the higher octane. I don't know anyone here that has that issue but not to say someone hasn't.
Are they the new L86 6.2L engines? The L86 is direct injected and have a much higher compression ratio of 11.5:1 than the older LSA 6.2L that was 9.1:1.
My 2015 Impala has the DOHC V6, 4 valves per cylinder, 305 hp engine with a compression ratio somewhere in the 11 to 1 area. The manual says regular gas is fine and out here that is 87 Octane. I think I have used 85 octane regular gas...in some areas of the states...with no issues.
