Sully2 wrote:
So just what oils do members of this BB use in their V6 diesels??
Brand and weight!
Always MB spec 229.51/52.***** Since early 2015, the recommended grade is 5W30. Previously, 5W40. 5W30 appears to be 'back speced' for older V6s. As of September when I changed oil, the Benz store was only stocking 5W30 for ALL V6 diesels.
Old call out was Mobil Formula M. Mobil changed the name in 2015.
MB changed the "Mobil" labeled bottles of Formula M to MB label. The bottles are gold but shaped like Mobil bottles. I'd think that with the dacades close relationship between Mobil and Mercedes, the oil is made by Mobil.
Pentosin, Liqui-Moly, & Valvoline @ NAPA.
If you have a Benz store close by, the price per L is competitive with parts stores. Better if you chat up the parts guys and get the discount.
***** It is a fine point but Mother Benz has a disclaimer in their literature. Mother says that the oils meeting their various specifications are "approved" for use in engine families...right down to geographic markets. Also, they list by name and grade. It will say "MB approved" on the bottle.
Some oils may say "meets" MB spec xxx.xx" that is likely NOT the same as "approved" and it may not appear on the MB list of "approved" oils.