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oil

J

jimmy

Well-known member
any reason i couldn't use an automotive type oilsuch as 50w. castrol ? avery ony suggests aeroshell. WHY? the gpu dont fly to high . a case of aeroshell at advance has gone up to $40 + not using much oil just time to change
 
Heard that you can use AMSOIL synthetic 20W-50W motorcycle oil on A/C engines, could be the same cost. See what the engine experts say.
 
goldhunter_2":kg4yhufe said:
I have been wondering about that my self
Click to expand...
Ditto!
The previous owner indicated that he'd put Mobil_1 synthetic in my PE90, seems to work alright, looks good, smells good, blows some out the breathers and seeps from a couple gasket, but nothing serious.
As a matter of course (not knowing exactly what the history is) I would like to change the oil, but what to use? Most of us want the very best we can afford, however what's best varies in opinion to no end. :?
It's a tricky line between GPU's and true AC engines.
 
Aircraft oil is ashless dispersant. So you need to make sure that the oil you used has the required properties to make an aircraft motor function properly. Tricky to sat the least...
 
o k....the question is.....
why is ashless so important? these engens (gpu"s) are not air worthy.
i would think a
high detergent oil would be supperier?
by the way...i wish the hood of my trucks were ashless
 
If I'm not mistaking, ashless means that when it burns it doesn't leave an ash contaminant on the surfaces that gets washed back into the oil. A dispersant means most things are kept in suspension in the oil so that the oil filter can filter it out. Without that there would be sludge form in the lower portions of the engine and bulk oil tank.

In my old PE60 we used AeroShel 50 and a shot of Slick 50. Worked perfect for a LOT of years.

I would think you would want to put automotive oil ONLY in automotive engines. A GPU certainly is not an automotive engine. it is a converted aircraft engine.

I don't run automotive engine oil in my Motorcycle or in my lawnmower. Temperature ranges are vastly different and at the higher temps viscocity can break down and thin out.

Diesel oils might have the higher temp ranges though but I would prefer to use the right oil in the right application.

I sure wouldn't risk my HIO-360 by saving a few bucks, engines are more expensive than oil is my take on it.

Scotty
 
You might try Phillips 100w, Cheaper than Aero Shell 100w. I found that Phillips 25w60 was a excellant oil in my 220 GPU, however it is pricey $47.00 a case that is the reason I switched to Phillips 100W. It is a little over $30 a case. I also use Phillips in both my airplanes and 25W60 in my old junker Harley. I used to use Shell products and they are good, but I prefer Phillips. I definitely would not consider using auto oil in a air cooled motor. Just my opinion.
Gerry Chancey
 
i used to run automotive oil and it smoked and burned the heck out of it. as soon as i switched to aeroshell, it quit smoking and my oil consumption dropped to nearly nothing.....
 
Pure synthetic oils have excellent antiwear characteristics; however, when used in aircraft engines after 600 to 900 hrs , they lose oil consumption control and/or compression. When these engines are disassembled, the rings are covered with a gray tacky substance that is primarily made up of lead by-products of combustion from the use of leaded av gas. Although synthetics are excellent lubricants with high temp stability and very good low temp flow characteristics , they are relatively poor solvents. Synthetic aviation oil is mix of petroleum and synthetic oil. This info is from Paul Royko ( the shell aviation dude)
 
You can order Phillips/Conoco on-line for $37.00 for a case of 12 quarts which isn't bad, however shipping could easily add a dollar or more per quart to the price.
After reading the Shell Oil guide, I've decided to switch to AeroShell or Phillips 66 depending on which the local FBO or distributor carries. For "up-here" the multi-weight seems to be the way to go as the boat is run at temps between the high teens to the high 80's. In July it'll actually get into the 90's for a two week stretch. :shock:
Here's a link to Phillips Avaition Lubricants:
http://www.phillips66aviation.com/AvLubricants/index.htm
 
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