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 Do you have something like https://www.goldeagle.com/brands/sta-bil/ where you live? I don't really know why it works, but the active ingredient is an aromatic hydrocarbon which reminds me of an artificial fruit smell, which is hilarious

(I've used it on <1 liter carbureted engines)

STABIL Car, Boat & Small Engine Fuel Treatments | Gold Eagle

STA-BIL Brand Fuel Stabilizers – America’s most trusted fuel additive & fuel system treatments. The best fuel additives that protect against ethanol damage.

Gold Eagle