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  #1  
Old 01-08-2001, 12:58 AM
Clancy
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I lived in Germany from 71-83 and while I was there an old German mechanic showed me how to clean my VW engine. We drained the oil out of the engine then put in Diesel (the same amount) and ran the engine for about 5 or 6 seconds until the oil light started to fade on. We drained the engine and then put new oil back in. He told me this cleans out all the oil channels within the engine and helped the oil flow better afterwards. This never hurt my VW and seemed to help. Of course those old beetles did not have an oil filter.

I just bought a 1983 300SD and was thinking of "Cleaning" the engine this same way. Has anyone ever tried this on a MB Diesel? I don't want to screw up my engine but it sure would be nice to know it's cleaned out inside and all my oil channels are open.

Any thoughts?


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Old 01-08-2001, 01:51 AM
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Join Date: Jun 2000
Location: Dubai, United Arab Emirates
Posts: 238
.. thought I would jump in quick before Larry Bible has his 02 cents worth, unless he has fallen off his stool with horror ! . I personally would steer well clear of this idea as regular oil changes will keep the engine internally as squeaky clean as it needs to be. What you will have here is deisel residue left in the engine after it is drained and this will mix with the new oil and reduce significantly the lubrication properties of the new oil. I would guess you would need several oil changes before you finally rid the engine of this diesel. My money is still on regular oil and filter changes, much cheaper in the long run!
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Old 01-08-2001, 08:16 AM
LarryBible
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Andy,

I agree totally and will only add that, not only will regular and thorough changes eliminate the need for such a drastic step, it also eliminates the RISK involved with same.

Good luck,
Change oil hot and change oil often,
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  #4  
Old 01-08-2001, 10:32 AM
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Join Date: Aug 2000
Location: Holland, MI
Posts: 1,316
I've heard of doing this using stuff ranging from ATF to Mineral Spirits Fortunately the old VW engines were the next-best thing to a stone axe, but less complicated and more forgiving of mistreatment.

If your oil passages were plugged, you would set a new record in oil-change intervals measured on a series of calendary pages and your diesel would probably be overheating big-time!

Just change the oil.

BCingU, Jim
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  #5  
Old 01-08-2001, 12:53 PM
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Join Date: Mar 2000
Posts: 567
What prompts your desire to clean the engine internally? Do you have evidence of sludge formation? Piston oil control rings sticking? Prior owner only changed the oil every other year?

Pull the cam cover and inspect. If there is evidence of sludge formation, then use a professional cleaner designed specifically for this problem, such as Lubro Moly's Oil Sludge Remover and/or Motor Clean, both of which are used with the engine's 8 qts. of oil in place. Diesel fuel is NOT the appropriate tool for the task at hand.
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  #6  
Old 01-08-2001, 01:41 PM
longston's Avatar
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Location: Mark West, CA
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Mime Answer, or Real Oil Lights?


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