Aircraft oil

Energy One
Bubba_BigDog

Bubba_BigDog

Redneck
Anyone ever hear or use aircraft oil that's intended for air-cooled engines instead of standard oil generally intended for water-cooled engines?
 
FrankBDPS

FrankBDPS

Well-Known Member
Why? I think the synthetic oil is expensive enough. I would think anything that is aircraft approved would be pricey as hell.
 
HMAN

HMAN

I just like my Freedom
I would think all the extra additives would not bode well for our land based Dogs? Aircraft crap has tons of overkill built in for obvious reasons. I know our hydraulic oil used in our landing gear has lots of "extras" in it for high altitudes n such. However, AVGAS is the shit!! Jm .02
 
V

Viking

Biker
Bubba_BigDog said:
Anyone ever hear or use aircraft oil that's intended for air-cooled engines instead of standard oil generally intended for water-cooled engines?
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Not on my Dog cause it is not needed, but on my boat, yes. I have dug out the mil spec and found marine oils that are identical to aircraft oils. Needless to say I do not pay too much for aircraft oils since I work in the industry, but West Marine and others charge you an arm and a leg for certain fluids. If you have access to get them and the mil specks are compatible, why not?
 
D

Dawggydawg

Member
Don't do it unless you want your S&S to die a quick death. I've been a licensed A&P mechanic for over 30 years. Aircraft reciprocating engines are for the most part air cooled, the oil used in them are vastly different than a motorcycle. They use a mineral based oil for break-in and then go to an AD oil (Ashless Dispersant). Aviation oils lack the friction modifiers required by motorcycle engines. They also never see the heat created by a typical air cooled motorcycle engine. Aircraft engine can also control their CHT and or EGT somewhat by having a manual mixture control and through the use of engine cowl flaps. But hey, if you want to try it, it's a free country. Just my 2 cents.


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Th3InfamousI

Th3InfamousI

Administrator
Staff member
Dawggydawg said:
Don't do it unless you want your S&S to die a quick death. I've been a licensed A&P mechanic for over 30 years. Aircraft reciprocating engines are for the most part air cooled, the oil used in them are vastly different than a motorcycle. They use a mineral based oil for break-in and then go to an AD oil (Ashless Dispersant). Aviation oils lack the friction modifiers required by motorcycle engines. They also never see the heat created by a typical air cooled motorcycle engine. Aircraft engine can also control their CHT and or EGT somewhat by having a manual mixture control and through the use of engine cowl flaps. But hey, if you want to try it, it's a free country. Just my 2 cents.


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Yes! Whatever he said....ha

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BWG56

BWG56

Guru
Dawggydawg said:
Don't do it unless you want your S&S to die a quick death. I've been a licensed A&P mechanic for over 30 years. Aircraft reciprocating engines are for the most part air cooled, the oil used in them are vastly different than a motorcycle. They use a mineral based oil for break-in and then go to an AD oil (Ashless Dispersant). Aviation oils lack the friction modifiers required by motorcycle engines. They also never see the heat created by a typical air cooled motorcycle engine. Aircraft engine can also control their CHT and or EGT somewhat by having a manual mixture control and through the use of engine cowl flaps. But hey, if you want to try it, it's a free country. Just my 2 cents.


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I couldn't have said it better, well done :old2::whoop::oldlaugh:
 
badyellowvette

badyellowvette

Active Member
I ran aircraft oil in my Sportster in the 80's. Bought a case somewhere, it was even in the old metal cans. Some old biker guy recommended using it, never seem to hurt it any. Don't think I would try it in my K9.
 
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