Brad Penn isn't necessary. I've ran 2 of these (one 5.2 and on 5.9) well over 200k, and some close to 200k. Never a running problem. In fact, my ram now has 234,*** and climbing daily. I run 10w-30 QS high mileage (formerly Defy) in the summer, and 5w-30 QS synth blend in the winter. My 5.2 I had in my '99 Durango had the intake plenum shot. It got about 600 miles to the quart of oil. I changed #8 plug about twice a year, and all of them about every year and a half. #8 plug is usually the one that sucks in the most oil if the plenum gasket is shot.
I drove mine this way for almost 5 years, and never replaced it. Ran good when I got rid of it. Here is a video I recorded of the 5.2 with the intake plenum shot that I posted on Jeff's (MRJL) 318 day.... :)
