That`s right, it is made for air cooled aircraft engines, which have much different requirements than a ground air cooled motorcycle engine.

Aircraft piston engine oil is not a good lube for a Harley Davidson engine.

Automotive oil 20w50 any brand is far superior.

Throwing a BS flag here...

Multi grade automotive oil was available before most on this forum were born.

10w30 1953
20w50 1966

 

Haha, thats because you have to read posts about seats, headlights and tires and the oil discussion takes over.. You been searching wrong!!

 

Actually 20w50 was created in 1958 for the 1959 BMC Mini.

 

Well I'm 82 an remember single grade oil before multi grade was available. age doesn't stop everyone from riding (G)

 

Back in my pan and hovels days( 1970's ) we used to order the Aeroshell 70 weight by the cases at an auto parts store a buddy worked at. The vendor asked who was ordering all the Aeroshell 70 and our pal told him we were using it in Harleys. He went on to tell him why it is not a good choice for our bikes. Colder air, steady RPM"s and is formulated with high ant- fouling additive packages. been running Mobil ever since they came out with their V-Twin oil. Lots of good choices out there but Aeroshell is not one of them,.

 

As a kid I for some reason found motor oil interesting ( still do ) Dad would buy quarts at the gas station sold in cans located between the pumps and I remember straight 30W and 30 HD, Later I remember 10w 40 and in my 77 280Z I used 20w-50 as thicker oil must be better I thought and perhaps it said Racing on the can? At 8 years old I had my own oil can punch or opener, I kinda miss old oil cans....

Early in life ( late 60's early 70's ) Dad would say you need to use a good Pennsylvania grade motor oil. Between dad and my neighbor Mr. Johnson , I learned very early the importance of oil changes and was shown by them how to do it! Mr Johnson never had kids and I think a kid ( me) wanting to watch him change the oil and sharpen the blade in his riding mower kinda made his day! I would knock on his door and say you changing oil today?

At 8-10 years old I was the king of cutting neighborhood grass & my Briggs & Stratton ( later a Tecumseh ) Lawn mowers were purchased used by me and were my pride and joy! The first of many things I would own with a gas engine and now uncle Sam wants me to go electric! I would wash my lawn mower ( even wax the mower deck ) and had pride in it and it always had clean fresh oil. I was taught exactly what, when and how to maintain them and keep them working proper buy wonderful men in my life and I just don't understand how single moms do it now?

To this day I use straight 30w in my lawn mowers, nothing wrong with 30W as thats what Mr. Johnson used!
Now almost 50 years later I get the same feeling maintaining my old EVO and think of Dad and Mr Johnson every time I drain that oil.

 

point?

 

I can also remember lots of stuff dad told me was gospel on a wide variety of subjects..... that grandpa told him..... that great grandpa told him. The single greatest thing they taught me was to think for myself which in turn made me do my own research where I discovered they were dead wrong on a lot of the gospel they handed down to me.

 

Oil threads RULE!

They need to open up the subforum again.

Winter is coming.

 

No way would I use 82 year old oil