Bubs

I am currently running 10w-40 in my 420 SEL as per the owner's manual, which says that it's a good year-around oil. However, for near and below freezing temperatures, would you gentlemen recommend any different type?

morris374

some might have a problem with this but if u are in an area at or near freezing i suggest synthetic oil but thats just me

Bubs

I'm actually getting near that now, and winters here will bring temperatures often below fifteen degrees F. I'm probably not going to run synthetic in this because I've found that switching to synthetic in an older vehicle often results in leaks.

schurmann

Im using Kendall 10-40w synthetic blend because it was in the engine when I bought benz 2 months ago. Seems like a good "best of both worlds" solution, no leaks.
It's hard to find Kendall, so when I change the oil I'll go to a different blend. A knowledgable guy at NAPA told me that synthetic blend oil is not the same as mixing natural with synthetic, it's a special base oil- not the same thing.
I don't think I'll go to full synthetic until I find the right one.

don606

I always use 10w-40.u us happens to -27 on tselsiyu.problem net.oil aral.sintetik think oil is not quite suitable for our engines.

C43AMG

I switched to synthetic in my car when I purchased it with 171k on the clock.No leakage problems.I did change over gradually...1/2 synthetic and 1/2 normal for a few changes before going 100% synthetic.