Do i use synthetic oil

Synthetic oil is great, a tad bit expensive compared to the conventional recycled oil but is new. Thumb rule is once you begin to use synthetic oil.you should always replace and.top off with synthetic oil. I personally use Mobil 1 in all my cars and trucks.

you don't have to- not much difference- think about it- are you going to keep that truck for 20 years? do you care about the slight difference in engine wear over that time span? just change the conventional oil at 3000 miles- don't believe the propaganda about 5000 mile oil changes- but if you have the extra money and it makes you feel good, go for it-