I started out with a 1980 F150, it went 300,00 miles before blowing the head gasket (300ci 6) Fixed and sold it later after the rear tranny seal failed. From there I bought an 87 Isuzu P'up with an auto trans. Cracked head at 115,000 miles. I replaced it and went to 200,000 miles before I sold it with a chronically…