Personally, Mobil1 is great if you like to increase the cost of maintaining your vehicle.

Gage your oil changes by your driving habits.

Short drives with lot of stop and go require more frequent oil changes.

Basically, if the manufacture specifies Mobile1, use it. Otherwise, save your $$$ and use conventional oil. In most cases, you will see about a 2 to 1 advantage. Two regular oil changes are about equal to the cost of one synthetic oil change.

John Stewart
Editor - 4x4Wire.com
Editor - 4x4Voice
Editor - MUIRNet-News
President - BlueRibbon Coalition