My wife just bought a 2001 Acura CL 3.2 S-type with 99K miles. I changed the oil and filter right away with GC 0w-30 and Mobil-1 m-104 filter. I can not find any UOA in the search for this combo. Most are Mobil-1 oils. Since GC has been great in our other 4 vehicles, I would like to think it is the best choice for the 3.2.