Is this guy right about high octane premium fuel? https://w

>>16491953
use regular.
see mileage until refill.
use premium.
see mileage until refill.

Can't believe I'm even replying.

You want to use the lowest possible octane your car can handle without preignition, some higher performance/compression vehicles require higher octane so they don't knock

>>16491953
WRX compression ratio is not enough to justify the use of 98, unless you fell for the meme of premium fuels using spheres to clean every single corner of your ve-hic-le

>>16491953
I use 98 in all my shitboxes simply becuase my area mixes ethanol into lower grades and I'm not putting that shit through my tank.

>>16491989
so which fuel should I used on a 04 WRX?

previous owner said they always used 98 fuel so I just did the same

>>16491953
Look at your manual and check what is recommended. Use that. If you want to clean your car dump a bottle of Techron into your gas tank if it's port injected.

>>16491953
high octane is not a scam. thread closed