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Azhule · 09-06-2019, 03:21 AM

Any reason for paying extra coin and using "premium" fuel?

Just asking because I know most "Owners manuals" state the wrong fuel grade (AKI vs RON fuel octane ratings)... and I doubt that a low strung, carb'd, push rod motor, with around 9 to 1 compression ratio will ping or knock even on the cheapo 87 gas (or even as low as 85 octane if you live over 5,000 feet above sea level).

I usually run our little Bashan 200 on 85 octane (6,000+ feet) and have yet to hear it ping or knock under any load I put it under

09-06-2019, 03:21 AM	#2
Azhule Join Date: Dec 2015 Location: CO Posts: 1,525	Any reason for paying extra coin and using "premium" fuel? Just asking because I know most "Owners manuals" state the wrong fuel grade (AKI vs RON fuel octane ratings)... and I doubt that a low strung, carb'd, push rod motor, with around 9 to 1 compression ratio will ping or knock even on the cheapo 87 gas (or even as low as 85 octane if you live over 5,000 feet above sea level). I usually run our little Bashan 200 on 85 octane (6,000+ feet) and have yet to hear it ping or knock under any load I put it under __________________ "Think as you like... but this self proclaimed Professor is always right" - Buckshot "You never know what someone is hiding beneath their smile..." - NinjaTom - R.I.P.
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