Originally Posted by racin4ds
I've seen this in every application that ran M1 oils as well. M1 oils are't what they used to be but you don't dare speak badly of this "holy grail" oil on here or they will burn you at the stake! I used to be a huge M1 fan and in the early-mid 2000's something changed. My wife even noticed our Hondas were significantly "louder" than before even after a FRESH OCI. So I switched to Pennzoil and never looked back. It is a superior oil whether these guys want to admit it or not...
I don't care if ticking, piston slap, injector noise or whatever it is anecdotal, it is always LOUDER with Mobil oils. Loud engine noise does not equal superior protection. Many of us have proven over and over in several different vehicles that the noise is worse with M1 oils and is easily solved by replacing it with another oil such as Castrol or Pennzoil.
It just cracks me up to see the new guys posting this and how quickly they get defamed by all the M1 fan boys on here! Makes me wonder how many more notice this but don't say it!
Bring on the bantering! I don't mind!
For a long time I was claiming that M1 0W40 is louder oil. However, UOA proved that it does not depart in wear etc. from other top notch oils. VISOM version of M1 0W40 in 5k in my VW CC sheared from 13.5 to 13.3. However, TBN retention was concerning. It went from 11.8 to 2.7 in 5k.
Mobil1 ESP Formula 5W30 was (it is not available any more) probably best Low-SAPS ACEA C3 oil available. That oil on other hand did not create any more noise than any other C3 oil I used in my BMW X5 35d.
I will do UOA at 10K on M1 5W30 EP in Toyota so will see where we at. As far as I know, boron in M1 is at lower levels than other oils which per some discussion here several years back is contributing to noise.