With all the oil talk here, is oil really the killer of the Toyota engine??? A Toyota truck/LC will run well over 200k mi with just changing the oil. A nonToyota US made engine with the best oil is lucky to see 150k (on average, my guess) Most owners use the Pennzcrap or what is cheapest at the LubechangeMartstore. My motor has the mark of Penn form the PO. It is a film that you can scrap off with a knife, but it still runs like new at 231k mi. That being said what is the killer of the 80 engine??? Head gasket,bad injection (running lean), running out of oil,coolant???