I recently bought a 1999 chrysler intrepid and i want to change the engine
oil. However i dont know what kind of oil was used on this car. I heard
alot about the oil sludge problem and the synthetic oil as a good mean of
solution. I also heard that directly switching to synrhetic oil can be
harsh and has to be gradual.I also heard that engine flush can be harmful
for the car. so do u have any ideas??