Mobil 1 ESP X1 5W-40

[CaptDan]

FYI:
On 2/22/2015 11:29 PM, CaptDan wrote to Mobilproducts <mobilproducts@ourdataworks.com> :

Question: Why did you quit producing the Mobil 1 ESP 5W-40 motor oil?

The following inquiry was sent through: ExxonMobil
Brand: ExxonMobil
Current Customer: Yes
Response:
Date: Feb 27, 2015 9:26 PM

Mercedes came out with a new spec the 229.52 and instead of making an oil just for that spec we covered the 5w40 as well the new oil is the ESP X1 0W30.

-Mauricio

[Mikegjax]

What I said.

[davel1971]

I'm sure it's perfectly fine, but I'm also sure I'm not the only one a little concerned over using 0W30 in a engine designed for 15W40. Not an issue in the motors in was specially made for.

[OldCoot]

Originally Posted by davel1971

I'm sure it's perfectly fine, but I'm also sure I'm not the only one a little concerned over using 0W30 in a engine designed for 15W40. Not an issue in the motors in was specially made for.

Very doubtful that MB changed any bearing clearances just because they recommended 15w40 originally. They've been changing oil wts in engines since the ic engines were invented.

[davel1971]

tolerances keep getting tighter in engines. Any brand, gas or diesel. When Ford came out with the 4.6 engine and 5W20 oil, it was hard to convince some of the old school people no not use 10w30 or 10w40, till they had their oil filters balloon up and leak. Case IH has come with with 10W30 diesel oil now. Do you know how hard it will be to convince all these farmers that the 15W40 they have been using for generations is now replaced with a lighter oil.

[Mikegjax]

BTW, the 20,000 mile oil change and maintenance reset is the same as the 10,000 mile reset.