I'm fixin' to do some preventive maintenance - radiator, thermostat, transmission fluid flush, magnafine filter, and maybe an auxiliary transmission fluid radiator. Question is, is there any documentation I can do that will help future prospective buyers not be skittish about the possibility that I did it all at once because of a pink milkshake? There is no pink milkshake. There's just me thinking, "hmm, while I'm in there might as well do it all."