Originally Posted By: ak62sporty
Hello. I am in the middle of a lemon law case with my 2013 dodge dart. The car has 7,500 miles on it. About 3 months ago, the car started misfiring when it would start, CEL flashing, and often not start. The vehicle has the 2.0 engine with a stick shift. The factory just came back yesterday saying the problem is due to the fact that the engine recieved Mopar 5w20 engine oil instead of 0w20 oil at the last oil change. Does this make sense to anyone? This winter has been crazy warm; some of the no starts occurred at positive 25 F, none of them less than 10 degrees. The 2.4 uses the Fiat 'Multi air' system, that looks quite oil sensitive, but my 2.0 seems to use standard cam phasers. Am I being feed a line, or could the viscosity issue be legit? The owners manual says 0w20 is preferred, but 5w20 is acceptable.
Who put the 5w20 in it, you or the dealer? If they put it in, they should give you a free oil change to 0w20. But regardless, the engine should start fine on 5w20 down to at least 10F temperatures.
What fault code did you get from the CEL?
I agree with NormanBuntz that you should humor the dealer and run 0w20 until the fault occurs again. I think they are feeding you a line. But I don't know if you need to go to the extreme of a Lemon Law case at this point. If the car only has one problem, work with the dealer to solve it, but make sure that you are getting and keeping the documentation on what steps were taken. To me the Lemon Law is for cars that have multiple problems that haven't been solved after many attempts by the dealer, and the car is all but useless because of them.
Getting lawyers involved just adds to the cost and stress, and you need to decide for yourself if the "cure is worse than the disease".
Do you like the car otherwise?