I have am using Amsoil in my 01 with 31k and my previous 00 which had 75k when I traded it (both ssei'*). It cost me about 30$ a change including the Amsoil filter. This change I am not using the Amsoil filter and have purchased WIX. No particular reason, I was getting a transmission kit, air filter and cabin air filter and decided to get the oil filter at the same time which I change about 5k miles. FYI there are two cabin air filters available, a regular filter and one with charcoal in it, this filter costs about 40$ but is designed to do a real good job filtering out the junk in the air.