New Chevy - hard to start.
Bought this new 2500HD 6.0L gas a month ago. About a week after taking it home, we began having difficulty starting it. Rolls over a few times, coughs a bit, rolls again, and starts. Feels like a...
Forum Discussion
ib516 wrote:
Fyi, octane is a measurement of gasoline's resistance to compression ignition. It doesn't burn better. Higher octane fuel is used in high performance engines because of their high compression ratio, not because the fuel itself makes more power. Higher octane fuels allow the engine to be tuned to make more power.
Not exactly sure what this means ... but my point is, different quality of gas will create different combustion situations inside the cylinder, and the engine will operate slightly different under those conditions --- I'm not physicist or chemist, but do understand some of the principles, and the mechanics explanation makes total sense to me, and if taken at face, explained what happened to my truck.
I can't recall directly everything each one said, but it all followed from his statements ... I was very pleased with the mechanics, the time they both took with me, making sure I understood it, and the dealership under the 'away from home situation', and the same day service without appointment.
I don't usually comment on service unless very good or very bad - I just expect it to perform its function = fix the truck. But in this case, I'm stepping up to state that VARA was extraordinary in helping us out under these conditions, and taking even more time when the mechanics came out personally and spoke directly with me. That's unusual in itself. Most time, you never get to the mechanic - just the 'paper guy' at the desk.
