hi im new to diesel cars, and mercedes really. i just bought an 87 300sdl with 278k miles and i was wondering what kinda things i should do for a tune up? i hooked up a boost gauge and the max seems to be between 10-12psi, is that good>? the car was suposed to be well taken care of, i got it from my friends dad who got parkinsons disease and can no longer drive so now its my car, i am also very interested in running WVO, i would also like to know if there is an intercooler on the car or if there is a way i can install one, and is there any diesel performance parts out for this car to get it moving a little faster?