C63 AMG (W204) 2008 - 2015
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Old Apr 6, 2016 | 09:37 PM
  #26  
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(A useful FYI from BobIsTheOilGuy forums). "It takes some amount of heat & pressure cycles to activate the anti-wear additives in the oil. The amount of wear has been quantified via radionuclide testing (RNT) while an engine is running. Until activation has taken place the wear rates go up. After the additives become active, wear rates decrease until the additives become depleted, as in this graph from an SAE paper on additive activation:

Prove it yourself: take an oil sample immediately after an oil change and every 500 miles afterwards. Dollars to doughnuts the UOAs will show wear rates (ppm/k mile) go up, then down & level off.

Changing your oil too frequently is a waste of money, resources, contributes to premature engine wear and is bad for the environment."
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Last edited by cays; Apr 6, 2016 at 09:57 PM.
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Old Apr 6, 2016 | 09:57 PM
  #27  
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Originally Posted by cays
(A useful FYI from BITOG). "It takes some amount of heat & pressure cycles to activate the anti-wear additives in the oil. The amount of wear has been quantified via radionuclide testing (RNT) while an engine is running. Until activation has taken place the wear rates go up. After the additives become active, wear rates decrease until the additives become depleted, as in this graph from an SAE paper on additive activation:

Prove it yourself: take an oil sample immediately after an oil change and every 500 miles afterwards. Dollars to doughnuts the UOAs will show wear rates (ppm/k mile) go up, then down & level off.

Changing your oil too frequently is a waste of money, resources, contributes to premature engine wear and is bad for the environment."
I never would have thought of that. My mechanic claims that due to the tune the car runs rich and the resulting fuel-smelling oil is not healthy for the engine.
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Old Apr 6, 2016 | 11:08 PM
  #28  
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I change my oil all the time and leave the filter. I do 5000km new oil and filter every second oil change. These filters are good for 15000km intervals. What is trapped in the filter is exactly that, trapped, you're not contaminating the oil.

I change it to keep fresh oil in because I am tuned rich.
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Old Apr 6, 2016 | 11:11 PM
  #29  
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Originally Posted by shamrode
I didnt get what you said. Over my head.
You understand oil expands when hot? Check your oil when its cold, it will be below that mark.
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Old Apr 6, 2016 | 11:18 PM
  #30  
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Originally Posted by Merc63
You understand oil expands when hot? Check your oil when its cold, it will be below that mark.
Follow up to this: the manual says to check it cold or 15 after shutting down the engine if it's been warmed up (or something along those lines). Those two circumstances would result in two different readings, IMO, bc the engine is still pretty hot after just 15 mins. Checking the oil on this car is more complicated than any other I have ever owned or checked. I'm starting to think it's bc the difference between min and max is too small.

Last edited by m a x i m u s; Apr 6, 2016 at 11:20 PM.
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Old Apr 6, 2016 | 11:28 PM
  #31  
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Originally Posted by Merc63
I change my oil all the time and leave the filter. I do 5000km new oil and filter every second oil change. These filters are good for 15000km intervals. What is trapped in the filter is exactly that, trapped, you're not contaminating the oil.

I change it to keep fresh oil in because I am tuned rich.
your numbers dont add up mate. with that you should change your filter on your 3rd oil change.

you may be right and I may be wrong, but for pete's sake....for under $20 i dont know what the fuss is about, you all driving AMGs yeah?
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Old Apr 7, 2016 | 03:00 AM
  #32  
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I change oil 5000
Filter every 10000

My blower snout is in the way of the oil cap, I have to remove it and loosen the belt. Takes two people... Otherwise I'd do filter with oil.
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