91 octane causeing severe detonation
08-31-05 | 01:49 AM
#1
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Joined: Oct 2002
Posts: 197
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From: Castro Valley
91 octane causeing severe detonation
91 octane gas is destroying my engine. It knocks so bad. I have a 93 rx7 mazda service manual that says fuel specification unleaded premium(ron95) or higher. Where do they sell 95 octane gas?
08-31-05 | 02:39 AM
#2
WWFSMD
Joined: Jun 2001
Posts: 5,035
Likes: 4
From: SoCal
US gas is rated differently. I think it is RON + MON / 2
It is unlikely that your car would still run if it was knocking that noticably. It is very likely that something else is wrong, or that your perception of knocking is incorrect.
-Max
>400RWHP on 91 octane CA pump gas
It is unlikely that your car would still run if it was knocking that noticably. It is very likely that something else is wrong, or that your perception of knocking is incorrect.
-Max
>400RWHP on 91 octane CA pump gas
08-31-05 | 02:49 AM
#3
Every street FD in California runs on 91 which is the highest octane gasoline you can get, and yet, your car and your car alone detonates??? It's not the gas unless you pumped 87 by accident. Something is seriously wrong w/ your car. What are your mods, and how much are you boosting?
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