Air cooled VW engines, the 40hp 1200cc in particular, though any year or hp rating will do. Keep the timing set properly and watch those exhaust valves.
Toyota 22R
VW 1.8L water cooled 4cyls, my 83 GTI had 340,000 miles on it when I sold it, never burned a drop of oil....leaked it, thats a diffent story.
Cummins 5.9L 6cyl and its 4 cyl 3.8? equivalent. These motors will run forever if maintained properly. I've seen the 4 cyl version in industrial applications with 12,000 hours on them.
5.3L Chevy V8. My parts running truck at work is a 99 Silverado with 234,000 very hard miles on it and still runs like new. I am beginning to think this is the best V8 Chevy has made to date.
Volvo 5cyls from the early 90's. I've seen quite a few with 300K miles on them running strong.
Mercedes diesels, same as the Cummins diesels.
