Are there any studies out there that compare Chevron's Delo 400 to Mobile's Delvac diesel oils?
I usually run Delo, but in my last discussion about synthetic oils, someone mention Delvac. I am about to change my oil. I decided to stay with Delo or Delvac. Which is a better quality, or are they basically the same.
Thanks in advance.
Bob 03 Ram3500 Cummins