Originally Posted By: Bill888
Since the article mentioned the infamous Chrysler 2.7 V6, I'll chime in with my own sludge report. My wife's Sebring Conv. has a terrible life: little warm-up, short trip, shut-off; repeat; short drive home.
Knowing of the 2.7's tendency to sludge-up, I've changed the oil every 3K without exception, using a Mopar filter. We recently had the water pump replaced (7 hr flat rate job!) and this was the first chance I had to actually see the cams, etc. Glad to report the motor is absolutely spotless-no varnishing, no anything at 73K miles. I think that if you really stay on top of these motors, they'll last a while (I'm hoping.)
Oils used: Penn Plat/but mostly Valv. Maxlife 10-30.
As you have witnessed, a 3,000 mile oil change interval is a true fail safe and cuts down on problems on engines with a sludge history or history of fuel dilution problems.