Join Date: Sep 2009
Location: San Diego California
Thanked 25 Times in 23 Posts
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The Premium Blue is not synthetic but it is really good oil. The Premium Blue Extreme is the Valvoline synthetic and that is also very good oil. I used the Premium Blue for a lot of miles and switched to the Extreme and really like that better. Don't think you can go wrong with either of the two Valvoline's mentioned.
I have never used Rotella (?), but a lot of people use it and speak highly of it. I think you will get strong suggestions on both oils, but the key is your oil changes regardless of which one you choose.
Search the forum and you will find data on both oils. Good luck...
2001, 2500 Ext Cab, Banks Exhaust, 4.10 gears, Auto, BAHF, Puke Bottle mod (mopar1973mans), Airdog 150, 3rd Gen wheels & upgraded front brakes, Chevy rear wheel cylinder, DSS Steering brace & 3rd Gen adj track bar, 6 Bilsteins, HX-35.