Somebody know if there is a problem if i combine 89 and 93 octane gas in my s2...i ask this because my brother is doing that... to save some money...

 

He'd save more by just drinking one less Pepsi a day or something...not worth it to me. It probably won't be a problem though.

 

It's not like the octane rating at the pump is 100% accurate anyway, so as long as you're getting close to 91... I don't see why not.

But personally I don't see the point

 

there is no point. nor is it worth the risk. our cars require premium for a reason. unless of course you'd like to suffer power loss and possibly even worse gas mileage, then don't put anything less than premium in. can we say "11:1 compression"? sure we can.