Quote:
Originally Posted by iminhell1
Car asks for premium. Just like kids will ask for every toy they see on TV. Don't mean you buy them everything.
You'll get the same MPG out of poverty fuel as you will the top shelf stuff. Long distance stuff, always go cheap.
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Or if the MPG is less (due to automatic timing adjustments to prevent knock), the extra fuel burned is cheaper than premium, I’d guess.
When I had my M5, first time I took it in for service the tech showed me how they could tell what octane I was running. Becomes a warranty issue. So there’s that on newer cars.
Also I’ve noticed almost every vehicle with a turbo these days wants 89 or 91 (one reason I bought the RAM is it is NA and only needs regular).
Volvo is out of warranty but a 4-banger with turbo and supercharger is probably going to fare better with the recommended octane. We’d like to keep it a few years more, and it is just now out of warranty.