We used mobile oil changers in both Paso Robles and in CDA when we were at/close to the 5K intervals last year. Made more sense to us than figuring out the logistics of unplugging, what to do with the dog, figuring out a rig friendly route, etc...your campgrounds are great resources for local services...
Where is Mexifornia? Not heard of it...
__________________
Scott & Phyllis Brown and Ben
2022 Adventurer 36Z towing a 2022 Black Diamond Ford Bronco