I was under the impression that Rotella and Dello synthetics were merely blends and not true synthetics. The man at my local oil distributer where I bought my Mobil 1 said that they are both true synthetics.
I was wondering, does anyone know the truth about these oils.........dino or syn?
Mark
2007.5 GMC SLE 2500 HD LMM **SOLD**
Owned 2006 GMC Sierra CC LLY/LBZ *2 not a D in SN* 214K Purchased 3/2010
CC/SB/4x4 Summit White
Owned a 2002 GMC CC LB7 CC sold with 135K
Now 2015 GMC Crew Cab Duramax/Allison
Custom Tool box