Beware that advise is worth what you pay for it. A member sent a report alleging that the 2.7l Chrysler was flawed by design. It is a light weight aluminum design that is able to run very cool. It is also a high performance engine design with almost 10 to 1 compression, 6 bolt main girdle, 4 valve per cylinder heads inspired by lamborghini formula one program...and over one horsepower per cubic inch.

I have personally looked at several of them. They have a high incidence rate for Chrysler...but are on  par with some other major brand names of engine readily ava. I just put a long block in a beautiful 2001 Dodge Stratus ES for my daughter to take to college. It had a rod thru the side of the block at 141,000. A big name fast lube place had changed the oil with 10w40 for the previous owner.

One or more of these three root causes in every one of the failures I have seen so far has been:

1. A lack of occasional road trips of sufficient time to get the oil temp avove 160 degrees. ( The temp at which condensation begins to be removed as vapor) 2. wrong viscosity oil  3. infrequent oil changes.

5w-20 is the only oil for these engines. The other commonality is many owners will steadfastly refuse to change their ways. For instance...I know of 3 that have circumvented the factory and gone with the 10w-40 or 15-40 oil. This is potentially very harmful as it flows slower under the normal pressures of todays engines.

Take a road trip once a week,  run a good 5w20 oil and motor on.

Bob