Matt Martinez

I have a 2005 c230 with 126k miles on it. I live in Arizona where as you know it gets pretty hot around this time of year. I just purchased this vehicle a few weeks back and have not done an oil change on it. I have read over the specs, but what would everyone recommend 5w-30 or 10w-30? I am looking to use Mobile1 brand. Thoughts?

Plutoe

Any dealer can recommend the correct viscosity, then go and buy an approved product!!

SicilianStyle

The only approved oils for our vehicles are 0w40 or 5w40, and must meet Mercedes-Benz 229.5 approval. For a list of approved oils look here: https://bevo.mercedes-benz.com/bevol..._en.html#close

BF_JC230

...or here.

https://mbworld.org/forums/c-class-w...ments-usa.html