Wanna know something about petrol going off?

It goes “off” as in out of spec. Not unusable. Not even *bad*.

The trout is on the same tank I last filled it with in June 2025. It runs fine.

I had another Falcon that sat from 2001 to 2009. Ran fine.

Maybe less power, or lower mpg. Couldn’t tell.

A really finely tuned engine control computer might complain, might throw codes. It might be really noticeable on a high compression or high performance engine.

But the mad max wasteland will be fine.

@NanoRaptor

Our gasoline is corrupted with minimum 10% ethanol.

Letting it sit more than a year is a bad bad scene.

@nlarson830 Actually, the advice I was given by experts is to start and run a motor vehicle (ICE) at least weekly, and actually drive it (any type) at least once a month, running ALL systems (including heat and A/C).

If it sits a long time, it might start and seem okay, but it's probably got problems that just haven't revealed themselves yet.

@wesdym

That's what we tell all of our customers