Engine Tick? - Page 6 - IMBOC
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post #76 of 78 (permalink) Old 05-08-2019, 10:43 AM

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Join Date: Jun 2008
Location: North Carolina
Bullitt Year: 08
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Bullitt Serialized Number: 0852
Posts: 3,705
Thanks Joe.

The last time I used Octane Booster was on an older car that didn't have Oxygen Sensors. Heck, in that car, I also had to use a "lead" replacement additive.
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post #77 of 78 (permalink) Old 05-08-2019, 11:51 AM
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Location: Nobel Ontario Canada
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Posts: 2,611
Most octane boosters are ethanol and MMT which was banned from gasoline a while back. It's the MMT that causes the build up on O2 sensors and can foul spark plugs. At $7 a bottle, just put the premium fuel in.
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post #78 of 78 (permalink) Old 05-08-2019, 04:28 PM

Join Date: Nov 2018
Location: Chandler AZ
Bullitt Year: 19
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Posts: 23
I only put premium fuel in my Bullitt and while I did hear a tick when I first got the car, I haven't heard it after 1k miles. Already got my first oil change and that didn't seem to make a difference either, since some people have mentioned noises getting worse after an oil change. No idea if fuel quality is a possible reason, but I agree with 4404, just get premium fuel instead of finding additives.
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