hub_cap
Active member
- Joined
- Sep 2, 2003
- Messages
- 41
- Location
- Marietta, GA
- Corvette
- 2003 50th AE Convert, Auto, '04 Z06 CE #174
There have been discussions as to which fuel to use in C5 and C6 engines. The manual recommends premium (93 octane) fuel. I have tried a tank of 87 octane in my Z06, but now use 93 exclusively regardless of cost difference (brand doesn't matter, except no Citgo in my vehicles).
Several people who have 07 cars say that they have been told that 87 octane is o.k. What do you use in your 5.7 liter or better engine?
I would like a poll that shows:
C5
regular grade (87)-
mid (89)----------
premium (91-93)--
C6
regular grade (87)-
mid (89)----------
premium (91-93)--
Several people who have 07 cars say that they have been told that 87 octane is o.k. What do you use in your 5.7 liter or better engine?
I would like a poll that shows:
C5
regular grade (87)-
mid (89)----------
premium (91-93)--
C6
regular grade (87)-
mid (89)----------
premium (91-93)--