I'm about to do my oil change, and I'm gonna use 15-40 regular oil
So I went to the store and the guy there told me that I need synthetic oil
because that's what's in my truck. I just wanted to know if that was true ? I have always use regular oil I'm my diesel trucks before so my questions is what type of oil is in the LML trucks? Also I want to change the oil in the transmission, is it worth to do a two flush meth so put synthetic in it? If so what transmission oil would be good for it? Thank you.
So I went to the store and the guy there told me that I need synthetic oil
because that's what's in my truck. I just wanted to know if that was true ? I have always use regular oil I'm my diesel trucks before so my questions is what type of oil is in the LML trucks? Also I want to change the oil in the transmission, is it worth to do a two flush meth so put synthetic in it? If so what transmission oil would be good for it? Thank you.