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Synthetic Oil - Group III and IV?
What's all the controversy about Synthetic Oils?
Seems that many "synthetic" oils are not what we would assume they are. Syntech, which I have used, seems to be particularly questionable... Anyone understands this well enough. Does it mean that only Mobil 1 can be trusted? Can it truly be trusted? I change oil every 5000 mi on a M119 engine (8.5 quarts). It's a pain and I won't do it every 3000 mi.
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2008 S550 2010 GLK350 1997 E420 (retired) 2005 CLK500 (retired) |
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