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Air Medal or two
Join Date: Jul 2003
Location: cross roads
Posts: 14,079
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Effect of oil in gas on octane
Experts, will a a very small amount of oil in gas change the octane rating?
By small I would say a once in 5 gallons. I have a snowmobile with automatic oiler, But I always throw a dash of Amsoil in the tank anyway.... Lots of times as summer goes along I rob the snowmobile and put it in lawn mower,Out board, Porsche, what ever, just so i can put fresh gas in for winter .
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D troop 3/5 Air Cav,( Bastard CAV) and 162 Assult Helicopter Co- (Vultures) South of Saigon, U Minh Forest, Delta, and all parts in between |
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11-01-2013, 09:07 AM
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Registered
Join Date: Apr 2005
Location: outta here
Posts: 53,309
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The oil won't make much difference but the gas will lose octane rating as it ages. If it's a few months old, I wouldn't use it in anything that is picky about the octane rating it needs.
JR |
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11-01-2013, 09:18 AM
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Get off my lawn!
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Besides a slight increase in emmisions I doubt the engine will notice at all. Gas does age quickly. When I buy gas to fill up the cans I ALWAYS add Stabil. If the gas is real old even with the stabil I pour in in my car gas tank along with a tank full of fresh gas.
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Glen 49 Year member of the Porsche Club of America 1985 911 Carrera; 2017 Macan 1986 El Camino with Fuel Injected 350 Crate Engine My Motto: I will never be too old to have a happy childhood! |
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11-01-2013, 10:11 AM
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Reiver
Join Date: Nov 2011
Posts: 57,408
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A little Marvel Mystery oil has been added to gas for a long time by lots of folks since lead became extinct.
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11-01-2013, 03:49 PM
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Air Medal or two
Join Date: Jul 2003
Location: cross roads
Posts: 14,079
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Yes to the Marvel red stuff.
In fact in a diesel it gives a noticeable increase in power.
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D troop 3/5 Air Cav,( Bastard CAV) and 162 Assult Helicopter Co- (Vultures) South of Saigon, U Minh Forest, Delta, and all parts in between |
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11-01-2013, 03:54 PM
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Carrera
