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Answered Annual service or not?

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@Rich W. : Who is that guy in the picture. You become a city slicker?😂🤣
It was at a wedding in Austin last year so I had to clean up a bit

IMG_1162.jpeg
 
It is always best to change oils before you put a piece of machinery in moth balls. That of course implies local service!
I understand you thought, but I look at it a little differently and I maybe wrong.
Oil changes on vehicles are xx amount of miles or one year. Piston aircraft engines are usually 50hrs or 6 months. The big reason is atmospheric contamination (partials, water) through vents etc and oil breakdown. if you have new oil in the engine it will be contaminated while in storage. I kind of do the opposite. I change oil at the start of the season.

There are a lot of contradictions. I remember when Mobil1 first came out and the recommended oil changes at 25000 miles if you used their oil filter. That fell away for a while, but now they guarantee 12000 miles. (Gassers). So what do you do?
Follow the manufacturer’s requirements and document when under warranty or they will reject a warranty request.

Oh, btw; on the F-16 the F100-PW-200 engine with 20,000 lbs of thrust had no recommended oil change. Just inspect and clean filters.
 
I understand you thought, but I look at it a little differently and I maybe wrong.
Oil changes on vehicles are xx amount of miles or one year. Piston aircraft engines are usually 50hrs or 6 months. The big reason is atmospheric contamination (partials, water) through vents etc and oil breakdown. if you have new oil in the engine it will be contaminated while in storage. I kind of do the opposite. I change oil at the start of the season.

There are a lot of contradictions. I remember when Mobil1 first came out and the recommended oil changes at 25000 miles if you used their oil filter. That fell away for a while, but now they guarantee 12000 miles. (Gassers). So what do you do?
Follow the manufacturer’s requirements and document when under warranty or they will reject a warranty request.

Oh, btw; on the F-16 the F100-PW-200 engine with 20,000 lbs of thrust had no recommended oil change. Just inspect and clean filters.
So if my engine had gallons of oil, rather than quarts, I might consider compromise!

The thought is that crust buildup caused by the particulates in used oil (think paint on your storage shed shelves), will do more harm than clean oil will!

As for the shelf life of the oil? Well those particulates are one the causes of the shortened oil life. However that is why I stated in the first of my thesis, I might economize! You wealthy RV owners should be able to pony up for an oil change when you pull the old girl out of mothballs!

Oh! that's what I'm talking about! If you have to ask how much, maybe you should be looking for a cheaper past time!
 
We do the compromise with oil capacity at 14 gallons of engine oil. Change it every 2 years and we run the engine every month at highway speeds to fully heat the engine. Cummins and Shell indicate it can go tens of thousands of miles between changes (when primarily clean highway use), but, that is assuming commercial/regular use.
Also use Blackstone Labs on the other years to monitor oil condition.
 

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