Question =]

[Butch11]

What is the best way to pro long engine life on these 4.0 motors. The last ranger I had was a 3.0 and the head went in it.

Thank you for any advice.

 

[bmerr98]

Regular maintenance and reasonable demands on the engine. I had a 1991 3.0 with just under 320k that might still be going if I hadn't got in a hurry, and I now have a 1998 4.0 with over 235k still running strong. Neither engine has ever been rebuilt to my knowledge. I just change the oil and filter every 5k or less along with the other regular maintenance stuff and I keep in mind that they're just V-6's.

Treat them right and they usually return the favor.

 

[RonD]

Never, ever, overheat the engine..........EVER!

Don't try to drive that last mile home, shut it off at the first sign of over heating or you WILL crack the head or blow a head gasket.
This applies to any newer engine design.

So to that end, flush and replace coolant every 2 years as speced, change the oil.

My '94 is above 300k now, on the bottom end, I did have to redo the heads....I tried to make it home, serves me right, lol.

 

[Butch11]

thanks