ML 350 bad camshaft balancer - PeachParts Mercedes-Benz Forum

Zig Freed · #1 03-12-2022, 10:39 PM

Can anyone tell me if my 2007 ML350 is outside the range of bad camshaft balancers? My engine number is: 27296730 612083.

Thanks

Paulwho · #2 03-13-2022, 04:40 PM

Mercedes-Benz with the improved parts have engine serial numbers that are higher than:

M272 Engine Serial No. 2729..30 468993
M273 Engine Serial No. 2739..30 088611

Zig Freed · #3 03-13-2022, 10:54 PM

Thank you!

Zig Freed · #4 03-14-2022, 10:40 PM

I really believe the lightweight oil used in engines today is not sufficient for the heat. There is no way a base stock oil of 0 or 5w can change to a 30 or 40. I think a straight weight 30 synthetic is best. I had a German engineer tell me that a base of 10 cannot ever act like a 30 or 40 when it gets hot.

ILUVMILS · #5 03-15-2022, 12:01 PM

The oil has nothing to do with the balance shaft issue. The root cause was insufficient hardening of the sprocket resulting in premature wear....

Paulwho · #6 03-15-2022, 07:18 PM

Quote:

Originally Posted by Zig Freed

I really believe the lightweight oil used in engines today is not sufficient for the heat. There is no way a base stock oil of 0 or 5w can change to a 30 or 40. I think a straight weight 30 synthetic is best. I had a German engineer tell me that a base of 10 cannot ever act like a 30 or 40 when it gets hot.

Spend some time and educate yourself

https://bobistheoilguy.com/motor-oil-101/