So it was time for an OC, so I drove down to my local wally world and they were out of my PP, saw the mobil 1 AFE 0-30, it was only .74 cents more so I said what the [censored]. In poured the oil with a M1 filter from my stash. Crunk up like usual after the OC, sat over night and went to crank it up in the morning and seemed to start maybe a tad faster, BUT the big thing was the trucks always had a timing chain rattle for a sec when its sat for a little while and low and behold not a single ounce of noise from the motor! Smooth as silk, seems to rev a little bit more freely but im just excited over the timing chain rattle being gone. Ive let it sit time and time again and ever since the change its not made the noise once. BTW its an 07 Chevy Colorado w/ a 2.9 4banger and alot of those those trucks make the noise, dealer says its normal. Overall im statisfied with the oil! a+ now ill have to UOA to see how it does.......