Which oil to use? Sheet 229.5 - Page 3 - Mercedes-Benz Forum

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post #21 of 23 (permalink) Old 02-11-2010, 09:13 AM
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ESP formula is having chem pack design for diesels per my knowledge and that will be harmful to gaser. Than we are talking lowering the expected 300k life expectancy by about 1 k with constant use, so the red light might be glowing, but no siren
In my other life I was highly trained with oils specification. Long time ago and technology changed, but the only proved friction fighter for last Century was molybdenum.
This is where it becomes tricky. No oil manufacturer release the formula they use, but oil test shows high molybdenum contest of Mobil 1 oils. That proves to me that M1 is adding molybdenum from the factory. Zinc as a friction fighter? Never heard this one.
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post #22 of 23 (permalink) Old 02-11-2010, 09:19 AM
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Originally Posted by gladis View Post
Just to check, is the Mobil 1 Extended Performance only available in 5W40?
According to their website information, Extended Performance is avaiable in 5W-20, 5W-30 and 10W-30.

Mobil 1 Extended Performance Fully Synthetic Motor Oil

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post #23 of 23 (permalink) Old 05-31-2012, 06:38 AM
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I have seen lots of comments about addatives in oils. There has also been reference to Molybdenum Disulphide. Sometimes called "moly". This is a carbon like substance that bonds with ferrous metals and tends to make the surface very slippery. However, add it to your engine oil at your peril. When heated Molybdenum DiSulphide changes to Molybdenum Trioxide which is a mild abrasive! Also be careful where you choose to use a moly product. It is usually a solid in a suspension of some liquid. If in a high speed revolving mechanical device. The solids can spin out and clog or cause other problems. Like most things, there is a place for this excellent product. Apply it appropriately.
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