Unless your racing it or driving the hell out of it just change the
oil with a good quality motor
oil(Castrol GTX has never let me down in 30 years) every 2-3k miles doing it more your just depleting the environment faster. Would use a slightly higher viscosity if your only going to cruise Florida(15/50w) or even 20/50 if know car not going to be started in lower temps, like 40F. I live in the 33525 zip down the road from you. If it is a Ford Engine find a competent Ford Srvc garage for the rest of the running gear is BMW E36 Platform and therefore any competent BMW shop or tech can handle the suspension/brakes once you clue them into that, they will recognize the minute they see it, if they are worth their salt as a BMW tech. Since I have owned my Gen1 haven't taken it anywhere to have it serviced, brakes/pads(Cross-drilled M3's all around), installed front
oil cooler, hood latches/hinges, speedo issues, electric gremlins, door lock pins, heating system, etc.