Quote:
Originally posted by Manya
my 250SE runs fine on 5W40 fully synthetic. No oil leaks 
Though a week ago the head cracked. So i'm up for an engine rebuild.
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Manya,
I'm not so sure it runs fine, not if the head cracked! Seriously though, not suggesting that the oil caused it. Sorry to hear of your bad luck.
Scott,
I think the lighter viscosity oil may help, but is not really the solution to the problem. My 190E also has a couple of lifters that are intermittently noisy until the engine reaches full operating temperature. I have found that the 15W-50 in the engine at present needs more time before the lifters quieten than the previous 10W-40. Lifters are not that expensive and I have every intention of replacing them. It needs a new valve cover gasket anyway and I am also tempted to do something about the blistered and peeling coating on the valve cover.
Greg
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107.023: 350SLC, 3-speed auto, icon gold, parchment MBtex (sold 2012 after 29 years ownership).
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124.090: 300TE, 4-speed auto, arctic white, cream-beige MBtex.
201.028: 190E 2.3 Sportline, 5-speed manual, arctic white, blue leather.
201.028: 190E 2.3, 4-speed auto, blue-black, grey MBtex.
201.034: 190E 2.3-16, 5-speed manual, blue-black, black leather.
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