I’ve got a 2015 Hyundai Sonata it burns a quart of oil every 2,000 miles at 67,000 miles. The dealership told me they will replace the engine with a remanufactured motor if it fails an oil consumption test. In order to start the test, I have to have an $800 engine de-carbon service done. Would a de-carbon service really prevent a car from burning oil? It sounds suspicious to me.
Clarification: Are you the original owner?
Which engine do you have?
It sounds very suspicious. Maybe check with Hyundai corporate to see if it really is required under the terms of the warrantee to address the oil burning issue?
it might help a tiny bit, and for a little while, but it won't fix the problem.
They are just throwing obstacles under your feet to try and make you go away.
Has the engine oil been changed on time and with the appropriate oil and filter? Has it always been serviced at the Hyundai dealer and on time? What they are suggesting ($800 de-carbon) makes absolutely no sense and is separate (unrelated) to the oil burning issue. In fact, this is the first time I am hearing that!
wouldn't carboned up oil control rings contribute?
The "decarbonizing" is likely one of those procedures used to clean intake valves in GDI engines - take off the intake manifold and blast deposits away with walnut shells. Wouldn't affect anything in the cylinders.
Are they going to guarantee, the remanufactured engine will not burn oil either?
If not, you’ll be back to square one after another 6yrs..
