Is there a way to prevent build up of oil sludge in Chrysler Sebring 2.7L V6 causing the engine to seize?
Yes, there is. Use synthetic oil and replace it at the interval specified in your owner’s manual.
What year is your Sebring?
I agree.
KEY being proper intervals. as stated above.
No modern oil should be related to sludge buildup. If you have sludge buildup, it could be due to a poorly-sealing head gasket or some other internal problem.
Listen To Your Engine Regularly
Depending on the model year, maintenance habits, and miles, some of these engines also have had issues involving timing chains/chain guides. Should you hear additional engine sounds, get it checked out without too much delay.
Keep Changing The Oil, Regularly
It’s a shame these engines had problems. They run very smoothly and quietly and deliver very good fuel economy. You will probably get a lot of miles out of it with proper care. Improper care reacts poorly with these motors.
How is you oil consumption? What year is it?
There Are Certain Modern Engine Designs With Sludge Problems From Different Manufacturers