First of all i want to thank all of you for your help, this is such a great forum. I am taking the plunge and doing all maintenance my self, I just to annoyed by the dealer trying to rip me off. This weekend I am at 10000 miles and going to do the oil change and service my self. From my knowledge I am going full synthetic 5-30 mobile one, or the mobile 5000 clean. any thoughts on what oil to use, As well as mobile synthetic on the differential. just picked up 10 Toyota oil filters and oil pan gaskets, as well as the pan. still haven't decided on what oil to use. Dino or synthetic. taking pictures and documenting everything this sat. i just check with the pros. (fj cruiser forums) for any suggestions on the decisions i made. And as well At 15 miles right of the dealer lend the car to my buddy for a quick around the block and he gunned it all the way, (floored the throttled) can there be any damage?