View Full Version : Mobil 1 synthetic oil?

09-08-2002, 01:21 PM
I have heard good things about this oil brand, so I thought I would give it a try. I noticed that when the truck has been running awhile and is hot, that I lose oil pressure on the guage.
Is this common? Is it becasue the oil thins out more than non-synthetic? Should I be concerned? There is about an 10lb difference.


09-08-2002, 01:34 PM
I have been using Amsoil synthetic. About the only dif I see is when it is cold (winter) the truck doesn't start as hard. As for the pressure I haven't noticed a dif. And no increase in fuel mileage either.

09-08-2002, 02:04 PM
I use amsoil have'nt noticed any pressure changes.

I use amsoil in work trucks, mowers, two cycle and even my old 69 harley sporty .
Aint put it yet in the wifes cts caddy yet but its in my trailblazer now.Got the duel bypass filters on the work trucks.

09-10-2002, 01:28 AM
You should not be having that. Either the oil pump is going bad or the gauge is.