4.0 OHC Question

[ronclark]

I have used extended oil changes on my Rangers since 89. I run a bypass oil filter along with the standard filter and full synthetic oil to allow me to do this. The first Ranger had almost 200K miles on it when I sold it to a co-worker. He now has over 240K miles on it and the engine still runs as good as new with no oil consumption problems. I used oil analysis to determine oil change interval. I do change the standard oil filter every 5K miles. Does that make you feel better?

Ford recommends changing the oil every 5K miles. I get to determine what I am supposed to do since I own the vehicle. I also have to deal with any problems I encounter because of my decision. I plan to drive my current Ranger at least 300K miles unless they take my license away.

I would love to see your oil bypass setup. I have been thinking of doing that myself.