We have a 1990 75 series that came with a 2H, that ended it's service life with 1.2m km on it after finally giving up a piston and me not wanting to pay to rebuild it again. Donor engine came from my 60 series. Currently a 12HT with 1.3m km on it. Definitely seen better days, but sits at around 11L/100km and still pulls pretty well so I'm happy.