I actually use it in all of my turboed cars. It just seems like it would be able to withstand more heat and give added protection. It is mostly used in Diesel trucks that usually have massive rotating assemblies and turbo chargers, which increase oil temps. I have read a lot of negative talk about using it in Gasoline engines, but I haven't seen any issues with it. Some people say that it cause deposits to form, but I haven't noticed any as long as you change the oil regularly. Some people say that the oil has more detergents than conventional oil and maintains its' consistency longer, but I still stick to changing the oil regularly. The previous owner to my 87 Civic only used Rotella in it and autocrossed the car regularly. I got the car with 255,000 miles on it and drive it pretty hard, and recently when I changed the oil pan gasket, I inspected the bottom of the pan and the pickup tube, and didn't see any bearing pieces at all and my oil pressure is still great. I could still see crossthatches on my cylinder walls, and there wasn't any buildup on the main cap assembly. I was pretty surprised since it has 280,000 on it now and every other D-Series that I have had, the oil pumped has gone out right at around 220,000.