Real (stupid) oil question

[jyoutz]

When I bought my first diesel in 2002 (F350 Super Duty 7.3L) I remember the owner's manual stating that the oil change interval was 3,000 miles. Even living in Hawaii at the time, that would mean three oil changes a year! I used to buy regular dino oil, then switched to synthetic, added a bypass oil filtration system which would filter down to something like 1 micron, and played the game of sending oil out for analysis to see how long I could stretch the oil change intervals.

These days I'm still driving a 2002 Super Duty 7.3L but my regimen is much simpler. I use a good synthetic oil and change it every 10,000 miles or so. The truck has close to 177k at the moment and the engine runs so well. I'm sure everything else will fall apart before the engine does.

The 7.3 is the best powerstroke ever made.

 

[mcmxi]

Just pay attention to the viscosity at high temps when you get it tested. The mighty 7.3 uses HEUI injectors.

I'm not in an oil testing program any more. I just run WIX 51734 filters and Schaeffer oil and change every 10k miles or so.