Originally Posted by selfserve217
I use castrol synthetic in my car (truck is too old for synthetic). I would recommend either castrol or mobil. Just stay away from pennzoil, as i've heard it tends to leave alot of buildup over time internally. I would even consider adding some Lucas to your oil changes, that stuff definitely helps in the long run as well. Hope this helps!
Absolutely...... we did a study in college and found that penz left the most gunk crap by far..... now if u dont wanna pay for royal purple, then go castrol ive always used it and i swear by it.... oil has come a long ways tho...... like they say ur truck cpu is programmed that after u reset it regardless of oil type and what not it will come on every 3500 miles...... so do like we do and just reset the computer and push on.......