Has Mobil 1 changed???

[x Baldwin Motion]

Just a few weeks ago I took a 1000 mile trip in my 04 Silverado and burnt a qt of Mobil1. It did look and smell skanky when I checked it. I have been using Mobil1 consistently since the 80's and have had a few spotless motors with over 100,000 miles. Never has this happened before. I dont what to think, I'll be changing the oil on tuesday. Will continue with the Mobil1. I'll ask my people at Mobil if they have seen this problem.

[3macs1]

Hi Norm:
Funny you bring this up.Like Chris I have run mobil 1 in everything since the early 80's even the snow blower and mower.I used the miles as a guide for changing 5000 max but more the color on the dip stick.It would always be so clear in the car and truck I could not see it on the stick. In the last year I have changed the oil in both vehicles probally three times more than usual for being dark but blamed it on the fact we did a intake gasket on the car and the truck being a 89 just picked up some gunk.The last change I also put valvoline in the car and the same day Mobil one in the truck. The car I just checked is clear on the stick and the truck after 800 miles is dark brown which is not normal.
It has always been a probuct I stood by but I think you are on to something.I am going to take it out of the truck to see what happens.
My last dodge ram went over 450,000 miles with it never apart and is still running.

[Norm reynolds]

This is something that I think Mobil has changed since last Nov Before that I had no problem
I know it is to soon to tell put 200 mile on jeep today with the Valvoline synthetic
Just pulled the stick out and it is nice and clear Took the oil cap off and it smelled normal just checked my sons 05 Grand with the 4.7 V8 . it has Mobil 1and it really
smell skanky. Has 1,800 mile on the oil and it is dirty as hell
what really got my attention is when I drained the oil last night and the oil was hot the smell was awful. The oil only had about 3,800 mile on it . It was the lifter noise
that morning that got me to check it out time will tell if the Valvoline does any better If any one come up with an answer I would love to hear what the heck is going on. The price for mobil 1 we pay this should not be happening By the way these are all new jeeps with less than 25,000 miles. Valvoline was cheaper by almost 2 bucks

[Paul D]

Check this forum out.....alot of X Oil Company chemists etc. with tons of experience and advice.
Paul

[Paul D]

oops!

http://theoildrop.server101.com/forums/ubbthreads.php

[Norm reynolds]

Ok I found this look like a lot of reading on this site it was stated that (surprised to find it based mostly on mineral oil (presumably Group III) plus a good slug of AN. It may also contain a small amount of PAO, but so small that I can't be certain.)


Web Post
http://theoildrop.server101.com/forums/s...part=1&vc=1


Looks like I am not the only one that has notice somthing is a miss
I will read more when I get back My Sheltie is drving me nuts to take her for a walk

[Norm reynolds]

Ok this is what I have found out so far

The new M1 EP 5W-30 SM dated Oct 2006 just came out of the G.C. and it is MOSTLY mineral oil, presumably Group III. It also contains a good slug of AN and some PAO, but little or no ester

I have the Valvoline in my wifes Jeep
I am also going to try Royal purple in mine and see what does better Also looking to use a Wix oil filter