Hello,
I just got my 2005 chevy D-max and wondered if it is good to run synthetic and what brand and weight. I always ran Mobil 1 in my avalanche. I haven't looked real hard, but I couldn't find a 15w40, only a 5w40 in synthetic. Is this ok? I live in Wisconsin and only pull a camper less than once a month. Also wondering how many quarts the 6.6 requires.
Thanks