Paul
The second motor I put in is from a 1985. Something I can't tell you is whom makes the oil filters. They are painted Nissan blue with "Nissan" written in big letters on it (along with other writing of course). My guess is if they were used by Nissan in their cars, which were using Isuzu engines, then they were likely a decent filter. I could be wrong, but I always figured OEM filters are of better quality than cheaper stuff, like Fram.
Either way, the nearest Isuzu dealer to me is 100 miles away, so I'll stick with the Nissan filters, which are only 20 minutes away. <img src="/forums/images/graemlins/notooth.gif" alt="" />

Just as an aside, I just picked up a one-cylinder Kubota diesel engine today (probably to end up on the wood-splitter), and I was given a one-cylinder Onan diesel a while ago, which will be made into a 5kW generator.

I have diesel madness! <img src="/forums/images/graemlins/evil.gif" alt="" />