Have you ever experienced any unusual engine noise from using Mobil 1? Does the Mobil 1 oil you've tried sound any different in your engine than conventional non-synthetic oil? The kind of noise I'm referring to would be valve train noise that would sound like lifter clatter from an engine that was rapidly losing oil pressure. This Mobil 1 noise phenomenon has been reported by people with all sorts of engines on the Bob Is The Oil Guy forum. However, from reading these 3800 forums, I've never heard anyone describe valve train noise with their 3800 while using Mobil 1. Maybe the 3800 is imune to the Mobil 1 noise phenomenon; we can only hope so. The Mobil 1 noise seems to be prevalent with the thinner grades like 5W-30 and 10W-30; although there has been a few reported cases of noise with 0W-40.
Originally Posted by addzradd
