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Id like to revive this thread. I've had octane knock with moderate throttle and revs anywhere over 3000 rpm for the last 6 years. Finally realized it was octane knock after a hot day with my new grill block, It sounded horrid. To remedy the situation I'm going to test e20 to e30 blends.
Currently have 1 gallon of e85 mixed with 16 gallons of 87 octane for e14.5 and 88octane. After 250 miles I do notice the car has more power below 3000 rpm, but when the car gets hot I still get knock and i lose all the power i gained. Ill be refilling in the next few days and mixing to e25 and about 90.5 octane.
All fuel here is e10.
3.2 v6 24valve sohc, 9.5:1 compression.
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