Mercedes-Benz Forum - View Single Post - Went from 5w-40 to 0w-40 by mistake. Should I switch back??
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post #26 of (permalink) Old 05-23-2019, 10:24 AM Thread Starter
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Date registered: Jun 2012
Vehicle: S500 4Matic 2005
Location: CT
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Originally Posted by bkdc View Post
What everyone said. It will make no difference. Just change your oil and filter frequently.

And there is absolutely no reason to buy Mobil 1 0w-40 euro synthetic (Group III GTL gas-to-liquid) oil (not true synthetic by European standards) when you can buy Castrol EDGE 0w-40 (Group IV PAO poly-alpha-olefin, true synthetic) oil at 5 quarts for 22.48 on Walmart or at times on Amazon with free shipping. The Castrol is superior in every way and also meets MB certification. Stock up.
Thank you. I didn't know that either. I have used Castrol forever on my BMW's and I like it but didn't think to use it on the Mercedes. Is this the one??

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