Quote:
Originally Posted by Detoxing
But as the article noted, the car may start experiencing "knock" and if it does then you'd want to switch back to the appropriate fuel.
When i bought my Turbo Mazda i asked my business partner (A master fabricator/technician) if he thought the 91 Octane was required. His advice was to try it. If the car starts pinging louder than normal, then you need to switch back. Mine did, so i switched back.
My car is also known to have timing chain issues, which results in catastrophic engine failure. I have to wonder if those timing chain failures that people are reporting have anything to do with using improper fuel.
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Sorry, I thought that was understood. Yes, if running 87 in a 91 motor leads to pre-ignition, you absolutely want to switch back to 91.
I don't see why running lower octane would cause a timing chain/belt failure. But yes, interference engines are not much fun. I just replaced my belt because it's 14 years old but only 50,000 miles. The tech handed me the belt and just grimaced. No wear at all...
But, I knew that if it goes, goodbye engine.