Quote:
Originally Posted by bobs
gsxr, what sort of problems are you talking about? My local dealer here in Richmond, VA just told me that 0W-40 was the new recommendation for just about everything that is not AMG or Diesel.
I just loaded my '97 S320 with 7.4 quarts of M1 0W-40 and now I'm worried!  |
Bob,
There won't be any catastrophic failures, so don't lose too much sleep.
The main things I've heard (repeatedly) are that hydraulic lifters suddenly start making ticking noises after the switch to 0W-40, and increased wear metals appear in spectral oil analysis. On the engines which displayed these symptoms, the symptoms typically went away after switching back to either Mobil-1 or Amsoil in 5W-40, 15W-40, or 15W-50 viscosities.
Click
here for a recent post from someone who just had this problem. Note that the lifter noise has been on diesel engines... haven't heard any stories about gassers yet. I would just switch back to something a tad thicker at your next oil change in the S320...
