AMSOIL synthetics front to back in mine. With AMSOIL motor oil you get an oil that neutralizes acids and controls soot thickening, extends drain intervals (3xoem (about 23k miles) or 1 yr whichever comes first). It maximizes fuel economy, reduces oil consumption and has an excellent cold pour point for cold weather starting.Thanks alot, and yeah its been great so far...I know it has a mbrp exhaust but dont know if its been "chipped" but what is the best power-adder (ecm flash) to add but not
kill the truck??? also what type of oil do you guys run??