|
Hi: Sorry, i've been away for awhile. In my experience, motor oil has ALWAYS caused problems. I remember having to resort to a ball peen hammer to get the valves out of a Quincy 325 because it had been run on the same 15W40 they were running their Detroits on. Someone mentioned non-detergent oil. Bingo! All those nice additives that do wonderful things like cleaning soot and varnish out of your engine stay behind when the oil that gets past the rings burns off in the cylinder head or on the valve plates. Engine oil, like oilless compressors, I am sure has been used by some people with good results. It would be an exception in my experience. I admire a once a month service routine. Extremely rare. I could often recognize a DeVilbiss by smell when I tore it open because virtually all of them had the same oil in them that they left the factory with. One was built in 1959! Usually, the compressor is put out of sight and out of mind and only gets attention when the belts start squealing. I have been forced to work on a DeVilbiss 432 that was hanging from a ceiling on a wooden platform, suspended by four ready rods. Or should I say, four ready rods per corner, held together with coupling nuts. Seemes they removed the mezzanine it was on, but decided to keep the compressor where it was. How much service do you think that one got! Air brake compressors are usually the worst ones for wear ridges at the top of the liners too. First compressor I ever rebuilt was a Midland 1500 (?). Most of them came off the v12 Detroits used here in the oilfield. Virtually all of them had clogged heads due to carbon fouling. As you would expect, worn rings aggravate the problem immensely. You are kind of out of luck when the compressor is tied into the engine oil circuit. If you have a Bendix with its own internal oil supply and pump, I would strongly recommend using compressor oil.
|
