Well, I've had great results running various engines on 15w-40 HDMO's, either Delo, Delvac, or Rotella.
Thing is. for most new gas cars and pickups, 15w-40 is not a recommended grade...usually either 5w-30 or 10w-30.
I'd like to run what is recommended if I get a new car and pickup, and since the HDMO's come in a 10w-30 as well, how does it (the 10w-30 HDMO's) compare to say a 10w-30 PCMO, such as Castrol GTX or Chevron Supreme?
Thing is. for most new gas cars and pickups, 15w-40 is not a recommended grade...usually either 5w-30 or 10w-30.
I'd like to run what is recommended if I get a new car and pickup, and since the HDMO's come in a 10w-30 as well, how does it (the 10w-30 HDMO's) compare to say a 10w-30 PCMO, such as Castrol GTX or Chevron Supreme?
