Originally Posted By: kschachn
Originally Posted By: irv
I definitely noticed a difference in my vehicles going from Mobil to Pennzoil. The sound reduction was easily noticeable and the vehicles seemed to run smoother, but that was likely due to there being less noise?
And not to just pick on Mobil, I noticed a sound reduction when I switched out Yamalube in my Yamaha Vector snowmobile to Mobil 0W-40 syn Euro oil. (Those were different weights though)
On all these sound discussions I don't understand how you all are able to accurately remember what the old oil sounded like when you first put it in. I have noticed that it seems like all new oil is quieter than the old oil, but that's comparing old vs. new. How are you remembering what the previous oil sounded like when it was new?
It's easy, imo, as I start and drive the vehicles to get them warm/hot first before an oil change. Doing multiple oil changes over the years, one notices these things, or at least I do.
My snowmobile, since it is fired and ran in my garage just prior to an oil change is even easier as I am right beside it during the warm up. After 10 or less minutes the new oil is put in and it's fired right back up to check the level.
I wrote about the switch years ago on here and also stated some other info about the switch that also surprised me. I had already made my mind up about Yamalube, but after the switch and hearing the difference cemented with me I would never ever go back to Yamalube.
