Motorcraft Synthetic 5-20

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Aug 20, 2007 | 05:48 PM

#21

RobK

Cobra Member

Joined: February 18, 2007

Posts: 1,301

Likes: 0

From: SE PA

Quote:

Originally Posted by JonW

How many miles does the car need to have on it before you switch to synthetic. My Harley dealer told me 5000 on my bike, and my Dodge dealer said the same for my Daytona.

1k should suffice. It doesn't take terribly long to seat the rings these days.

Aug 21, 2007 | 11:53 AM

#22

RKNMACH

Bullitt Member

Joined: May 10, 2006

Posts: 408

Likes: 0

From: NOVA

I'm using 75w140 RP in the rear.

Aug 21, 2007 | 03:46 PM

#23

CJ-07GTCS

Member

Joined: September 8, 2006

Posts: 31

Likes: 0

Mobil 1 Oil Users - Mobile1 is no longer a true synthetic.

(New to some, old to others.)

http://www.my350z.com/forum/showthread.php?t=253651

Aug 22, 2007 | 09:43 AM

#24

Indystang

Mach 1 Member

Joined: July 16, 2004

Posts: 851

Likes: 0

From: Greenfield In.

Those numbers dont substantiate your claims. Post something other than your oil analysis sheet before you make a claim like that against Mobil 1. I am sending them a copy of that posting to them and letting them respond to it.

Aug 22, 2007 | 11:10 AM

#25

theedge67

Team Mustang Source

Joined: July 4, 2006

Posts: 2,872

Likes: 1

From: St. Louis Area

Terry, do some more research and you will see there is some true merit to the claim. Lots of talk about it at www.bobistheoilguy.com. A few years ago, Mobil1 flaunted the fact that they were a true Group IV synthetic. That abruptly changed, and they would only say things like "Mobil1 is made of a propriatary blend of many high quality synthetic fluids" No comments about what "grade" of synthetic they are using now.