I'll do mine every 30K and have the dealer do it as well. I don't want to give Mitsu any reason to not honor their 10/100K warranty when/if the CVT belt gives out. Same goes for oil changes. If I cant find a service center to do it near by, I'll travel to my home dealer. BTW...Belle Tire knew my Mirage took synth 0-20w when I asked about an oil change while I was getting the tire balanced and rotated. Surprised me, as I had never heard of 0-20w until I bought this vehicle. They will most likely get my business for that as well.