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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I think most modern cars have knock detectors that dial things back if excessive knock is detected.