Premium Vs Regular Unleaded

[hrd-hr30]

always premium.

although this week i happened to get some AVGAS for free... about 25l. lol.

so that went in my tank which mixed with 10litres of premium. better stuff

I run AvGas in my racecar. 5 reasons why what you've done is a bad idea:

1) AvGas is lower specific energy. meaning you risk running lean without a re-tune to suit.

2) its leaded and illegal for road use.

3) its leaded and will kill your cat converter.

4) AvGas has a short shelf life and degrades quickly = lower octane.

5) AvGas is very hydroscopic (absorbs moisture) and can cause problems in your fuel system if its not straight out of a new sealed container.

good thing you only got 25L, so at least it won't be in there for long. but I'd be topping up that tank with 98 or higher unleaded to dilute it as much as possible and avoid any nasty side effects.

[Silvia GTR]

I use BP Ultimate, never had any issues

[adam-__-]

Seriously, how much do you really save filling up with cheaper fuel.... a few dollars. Then take into account less k's from the tank of cheaper fuel..... if you need that $5 you saved that badly, maybe you should buy another car.

That's what I was trying to say. Buying another car because you need that $5 is just stupid though, but I know what you're getting at.