Amsoil is a fine product...not any better or worse than any other synthetic. Make sure your new truck is past the break in period before using a synthetic or you will prevent bedding-in. Also, careful with using a synthetic on a car with quite a few miles...it is possible that you can experience oil leaks. My general rule of thumb is that if the car has more than 35,000-40,000 miles and has not been on synthetic regularly, you probably should not switch.