H22a4
Moderators: RedRacer, spiffyguido
- spiffyguido
- Moderator
- Posts: 2196
- Joined: Fri Nov 11, 2005 2:55 am
- Prelude Model: 1991 SE-SR
- Location: Alberta, Canada
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- RedRacer
- Moderator
- Posts: 532
- Joined: Sat Nov 19, 2005 10:38 pm
- Prelude Model: 1995 Si w/mods
- Location: Alabama
Re: H22a4
I second that.
Important to go with the manufacturers suggested fuel type. Running lower grade than what is on the dash markings, in the owner's manual and on the flap of the fuel tank door WILL eventually ruin your engine, it is as short and simple as that.
If it says Premium, then use ONLY Premium 91 or higher octane. Sure, in a pinch if you had no choice, then you could run a tank of low grade fuel safely, the engine computer (knock sensor) will retard ignition timing and prevent detonation, you'll notice poor performance and lower gas mileage. The engine is designed to safely run on lower grade fuels, but not designed to run on them all the time.
Important to go with the manufacturers suggested fuel type. Running lower grade than what is on the dash markings, in the owner's manual and on the flap of the fuel tank door WILL eventually ruin your engine, it is as short and simple as that.
If it says Premium, then use ONLY Premium 91 or higher octane. Sure, in a pinch if you had no choice, then you could run a tank of low grade fuel safely, the engine computer (knock sensor) will retard ignition timing and prevent detonation, you'll notice poor performance and lower gas mileage. The engine is designed to safely run on lower grade fuels, but not designed to run on them all the time.