View Full Version : What kind of gas is ok for WRX??

07-06-2011, 09:31 PM
First off i am new to this forum, and new to Subaru. i just bought a 2003 Subaru Wrx and the previous owner only ran 91 octane, i was wondering if that's the only octane i should use and also if there are any benefits for using 91 octane, Thanks a million!

07-08-2011, 08:05 PM
should be run with premium, at least i know the newer ones do, boosted high horspower engines need higher octane to resist engine knock due to the high compression turbo chargers creat. otherwise primium is a waste of money and you would be crazy to use it on any normal non high performance car.

WRX STI Enthusiast
08-02-2011, 03:46 AM
You need to use premium for most vehicles with a turbo, otherwise you sacrifice power and can damage the engine.

08-03-2011, 08:27 PM
In short, in Australia, the 2.5L (WRX's) are sold as requiring 95 while the 2.0L require 98. Not sure how this relates to other Countries though.

Rally Noob
08-24-2011, 02:58 PM
I got an 01 rs should I be using premium or can I use lowest? I do a lot of city driving if that will help ...