Corvette Forum : DigitalCorvettes.com Corvette Forums banner

1 - 2 of 2 Posts

·
Registered
Joined
·
14 Posts
Discussion Starter #1
I have a C5 2003 50th anniversary wit 49k. I noticed that when I go to pass cars, jump on it, I hear valve clatter. I am running regular gas but put in some octane booster on the last refill with no change. I have not tried premium yet. Do you guys run premium? Could that be the issue?
 

·
Premium Member
Joined
·
4,668 Posts
If premium fuel is recommended then that's what I would use. When you're not "jumping on it" regular may be fine but for performance I'd use premium. The fuel additive you used probably said a "4 point" increase in octane. Read the small print. That additive will only raise your octane from 87 to 87.4. It's not 4 whole numbers but rather 4/10ths. That's their definition of 4 points. Maybe they should have said point four.:laughing:
 
1 - 2 of 2 Posts
Top