Mobil 1 0w20 in a 2000 GT

You might consider 0-30, although it is hard to find sometimes. If you go to the Mobil 1 web-site you will see that the 0-20 is not approved by ford for some reason, but the 0-30 is. When its all said and done, it probabaly wont make that much of a difference anyway. As a side note, I have been running the 0-30 for over a year with no problems, and no noticeable performance increase :)
 
unless you are running a turbo or supercahrger with lots of boost than ya its too thick. i would use a 5w30 for most applications. you want the first number to be lower, like a 5 because thats the viscosity when cold. so you would oil up in the cams on a cold start as soon as possible.
 
NicksBullitt said:
0w20 Mobil 1 in my bullitt, no performance increase, or problems. The oil meets specifications set forth by ford. On the Mobil 1 bottle it even says recommended for Ford applications. :shrug:

I put 0w20 Mobil 1 in last weekend and took my car to the track and destroyed the rear end! (Plus a couble of other ad ons :nice: )

I ran a X Pro 5.0 car 4 years ago and talked with Billy Glidden and he was running 0w oil, the stuff looked like water and had other secret additives that was specially blended for him that I believe came from Red Line.

0W20 is no problem for our cars :flag: