davidliu68

This is the first time I try to change oil for my 2006 SL55 AMG. Should I use Mobile1 0W-40 or 5W-40? MB recommended 5w-40? What is the different between them.

David

PDC

I would stick with the 5-40 multi visc oil. 0-40 is REALLY thin. Might be helpful if you live in a frigid climate during the winter and neet to start the car frequently when cold. Thinner or lighter weight oil will move more readily through the oil pump and passages when very cold. But truth is 5-40 is pretty darn light weight to begin with. I'd say stick with 5-40. You also may want to consider Amsoil full synthetic. It's really great stuff.

davidliu68

I live in California, summer time temperature reach to 100+ degree. I saw many posts people is using 0w-40. Thanks for the quick replay.

grane

0-40 M1 is the oil to use because every engine has the greatest % of wear during startup no matter what the temp plus said oil has the most advanced additive package. I hang out with some race wrenchers and an indie and it makes noisy engines quiet. That is all they use.

Use AMS oil and see if MB honors your warranty. It might be good, but the lawyers won't like it...summary judgement.

Use a fleece filter too.

m1 is on sale stock up!

PDC

No problem! In Cali or Fla or anywhere its warm all year and piping hot in the summer, I really think the factory 5-40 would be preferred. Keep in mind, hotter temps will thin the oil. 5-40 is already pretty thin to begin with. If you lived in Michigan or Minneapolis, I'd say go with the 0-40 between October and April. But where you are, I would actually stick with the 5-40. By my own admission, ad good as advanced full synthetic oils are (Mobil-1, Amsoil, Royal Purple, etc.) I don't think you are risking on iota of harm either way.

awiner

0w-40 is the factory fill on AMG's. Stick with it

davidliu68

0W-40 it is. Thanks all...

alx

both are good.

mercedes started with m1 0w40.. in 2007 it switched to m1 5w40 esp on all models and it is recommended also for pre-07 cars

so.. if 07+ run 5w40 esp, if older, you can run either one

i personally run whatever i can get - usually 0w40 as 5w40 esp is available only at few places outside the dealer network

grane

Thank you.

Folks should do a search or go to the Tech section on the M113K engine.