i have a 98 tacoma with 82000 miles on it, i bought it with 72000 and one of the first things i did was put amsoil in it. My dad has used amsoil on everything he has owned (cars, trucks, tractors, motorcycles, air compressors,etc..) that requires oil since the early 80s. It is an excellent product. In fact i just got done buying some amsoil for my rear diff. as soon as i get that damn axle seal fixed. I would recommend it if you plan on keeping your truck for a long time!