Went from 5w-40 to 0w-40 by mistake. Should I switch back?? - Page 3 - Mercedes-Benz Forum
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post #21 of 32 (permalink) Old 05-18-2019, 10:17 AM Thread Starter
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Hey Sonny, you're not the only one who buys oil and filter at the dealer. I do, too, however the parts counter gives me a discount since we've known each other for many years. It ends up being a good deal. Moral: get to know your dealer parts team and good things happen

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Hi John,
I agree 100% with you and I get the discount as well so it is not too bad. But this time around my regular parts guy was gone and the new guy gave me the other oil instead. I should have checked but oh well
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post #22 of 32 (permalink) Old 05-21-2019, 04:07 AM
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The Mobil 0W40 is a fine oil. I've used it exclusively in the S600 and have several oil analyses that show outstanding results.

For example: https://www.bobistheoilguy.com/forum...Number=2982174

You've got good oil in there. No worries.
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post #23 of 32 (permalink) Old 05-21-2019, 05:12 PM
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I live in the midwest, and have used nothing but Mobil 0W40 in both our cars. No issues of any kind in 8+ years.
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post #24 of 32 (permalink) Old 05-23-2019, 08:36 AM
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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.
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post #25 of 32 (permalink) Old 05-23-2019, 09:01 AM
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Didn't know about the Castrol, @bkdc . Thanks for that tip!

2000 S430 (Dad's car, used for special occasions)
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post #26 of 32 (permalink) Old 05-23-2019, 10:24 AM Thread Starter
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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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post #27 of 32 (permalink) Old 05-23-2019, 10:47 AM
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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??

Yes, that's the one. Not all Castrol Edge is Group IV oil, but the 0W-40 A3/B4 is the good stuff. Stock up at Walmart.

I used to use Liqui Moly Leichtlauf High Tech 5w-40 but the Castrol Edge 0W-40 is the best bang for the buck out there, and it's hard to beat for the price.
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post #28 of 32 (permalink) Old 05-23-2019, 11:11 AM Thread Starter
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Originally Posted by bkdc View Post
Yes, that's the one. Not all Castrol Edge is Group IV oil, but the 0W-40 A3/B4 is the good stuff. Stock up at Walmart.

I used to use Liqui Moly Leichtlauf High Tech 5w-40 but the Castrol Edge 0W-40 is the best bang for the buck out there, and it's hard to beat for the price.
Great thank you!!
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post #29 of 32 (permalink) Old 05-23-2019, 11:26 AM
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I heard that Liqui Moly is better than Mobil 1 and basically better than anything else. I'm going to do an oil change today on my W220 S500. Happy Motoring!
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post #30 of 32 (permalink) Old 05-23-2019, 12:03 PM
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The most important thing is to change the oil and filter frequently. The oil doesn't matter as much as long as it's a decent oil that meets your manufacturer's specs. I just pointed out Castrol because it is superior to and priced lower than the very popular Mobil 1 0W-40.

The stoutest oil I've found is Redline 5W-40 although it is not MB approved. The HTHS of 4.4 is insane and this oil is perfectly safe to use. I'm just not willing to pay three times the price for oil when the Castrol is perfectly adequate.
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