With oil changes that frequent, I suspect you will strip the oil plug holes before you suffer from any oil related failures.
Unless you are parking in the rain, or driving through deep deep water, the gear box oil changes are excessive. I would suggest the same thing on your engine, but neither is it good practice to leave old oil in for the winter season.
The Willys engines were only good for about 20,000 good miles, and another 15,000 lower compression miles. But a lot of the engine wear I saw over the years may have been due to poor air filtration over lubrication related failure. Scored cylinders were the norm.
Now you are not likely to be driving in as dusty a condition as the Jeeps were during their service, nor are you likely to be driving for 8 to 12 hour trips at 55 mph. Those were likely the true killers.
If there is one thing that I think would likely improve the life of the engine, I would say it would be to install a paper filter inside the oil bath housing and do away with the oil bath. If you are looking for evidence of which is more effective, have a look to see how many oil bath filters are produced today. Virtually none.
Last edited by rob love; 05-02-19 at 18:02.
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