Synthetic Oil?

[AC5ZO]

I have been using Mobile 1 in all of my engines for the past ten years. I have a 92 GMC Sierra with 75K miles including a lot of offroad (even one pass thru the Baja 1000 as a chase truck) That engine does not use a drop of oil and the truck runs like new. I had similar success with a Toyota SR5 chase truck and a Pontiac Bonneville that I also owned. I just got my H2 and the dealer told me that he would recommend Mobile 1.

I think that it is good to do the first oil change early, but I use regular oil for the first 5000 miles or so. I believe that this gives the engine a chance to wear in nicely. The Mobile 1 is so good that there is little wear after putting it in. (Mobile does not say that this wear in is necessary, by the way.)

I have used Amsoil in the past with good results also. I know that there are other good synthetics out there, but I have had such good luck with the Mobile 1 that I haven't bothered to look around or research it further.