Mail order oil=no bueno. Id use rotella before I did that.
Cheap oil delo 400
Spendier selections mobil 1 td 5w40, valvoline ext blue 5w40
I ve been running the two synthetics listed above in my heui truck for a couple years now. The cold.start ease is very nice but considering the oil still gets changed every 3-4k, not worth it for me.
My duramax gets whatever the dealer puts in it. Ive only opened the hood on my new truck to add DEF,lol.
Cheap oil delo 400
Spendier selections mobil 1 td 5w40, valvoline ext blue 5w40
I ve been running the two synthetics listed above in my heui truck for a couple years now. The cold.start ease is very nice but considering the oil still gets changed every 3-4k, not worth it for me.
My duramax gets whatever the dealer puts in it. Ive only opened the hood on my new truck to add DEF,lol.