FastBird91
Registered User
A couple days ago my friend and i made a bet. He lost the bet so he had to fill up my SC with gas. I gave him the keys and told him "filler up". He drove off in my SC and went to the gas station to fill it up. He put $45 in gas in it and returned. I forgot to tell him he needs to put 91 octane in it. Now it rides rough as expected, and makes a horrible undercarriage sound at about 1000 rpm's when im accelerating. It also makes that noise when im under hard acceleration. I pretty much hear it all the way around. It sounds like my catylictic converter is pinging really bad. I dont think that can be it because i had new performance ones put on about 10,000 miles ago. Can this 87 octane be my problem???
Thanks
Thanks