Oil in Air Filter (1971 220D) - Mercedes-Benz Forum

 
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post #1 of 7 (permalink) Old 02-04-2013, 03:54 AM Thread Starter
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Oil in Air Filter (1971 220D)

I have a lot of oil in the air filter and obvious oil loss. There is no fluid mixing and no smoke out of the tailpipe and no poor engine performance.

Other than a head gasket or piston rings, does anyone know what could cause this?

Thanks and all replies are greatly appreciated.
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post #2 of 7 (permalink) Old 02-04-2013, 04:39 AM
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In 1971 the 220D was originally equipped with an oil bath style of filter. If you still have the original set up then this is normal. You should drain, clean and replace the oil (fill to mark on lower bowl) about every other oil change.
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post #3 of 7 (permalink) Old 02-04-2013, 09:39 AM Thread Starter
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Thanks a lot. I didn't know that. Looks like I have nothing to worry about then.
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post #4 of 7 (permalink) Old 02-04-2013, 02:10 PM
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The W115 diesel not only had oil in air filter, but also oil in the injection pump which needed to be renewed at every oil change.

The engine oil filter consisted of a permanent main filter (which needed to be cleaned only) and a replaceable by-pass filter.
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post #5 of 7 (permalink) Old 05-24-2013, 10:05 AM Thread Starter
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I have never had this type of air cleaner before. Should a paper cartridge air cleaner be in there?

Thanks.
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post #6 of 7 (permalink) Old 05-24-2013, 10:07 AM
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Nope, just the steel mesh.
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post #7 of 7 (permalink) Old 05-25-2013, 03:49 PM
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depending on the dust in the air where you drive , you can go a LONG time before cleaning .on the injection pump , just loosen the hollow bolt at side [ 14 mm ] , pour in a 1/2 pint oil at red cap , let drain under car [ pan ] , tighten plug when oil stop draining , you are done .at 6k interval .
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