When I was new to it, I would just do the oil, then get the shop to do the other stuff. Fluids and filters are the low-hanging fruit. They charge a huge amount for something that requires little skill or equipment.

Once the dealer quoted me $300 to change the radiator fluid. I didn’t even own a garden hose at that point, but I bought one, figured out how to flush coolant, and saved about $250.

Later on I started doing brake pads, gearbox oil, suspension bushes and little tidbits. The only “service” I paid for in the last 3 years is a head gasket replacement. Hopefully I get another 20 years out of it.