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svtvnm
01-03-2008, 05:30 AM
Just wondering what octane rating is best suited to my 99'. Only minor mods, I usually run 98% is this o.k. or should it only be 95%.

Firme
01-03-2008, 08:12 AM
Unless you make some major changes (boost, higher compression, etc..),
93 Octane is just fine. Just make sure you get the car tuned after putting on any modifications that alter the air/fuel ratio, etc.

svtvnm
01-03-2008, 08:01 PM
Can using 98% cause any problems?

RF Cobra
01-03-2008, 08:29 PM
It will empty your wallet faster but it wont cause any problems with the car.

Can using 98% cause any problems?

svtvnm
01-03-2008, 08:44 PM
thanks

blk04cobra1
01-04-2008, 09:24 AM
Can using 98% cause any problems?
Like said above, no, but if it's leaded 98 it will run your O2 sensors out quicker :thumbsup:

svtvnm
01-04-2008, 07:17 PM
Leaded petrol was phased out a few years ago here so all our premiums are unleaded.