My 2013 Elantra GLS makes rattle noise when accelerating but usually quits after engine warms up. It only has 28,000 miles. I am the original owner. I called the dealer about it because there is a class action suit about piston knock. The dealer told me it was because I was using aftermarket oil filters. I will have oem filter put in next time but is he telling me the truth?
No, the dealer is not telling you the truth. Aftermarket oil filters have nothing to do with it. It is because their engines are not made properly.
It could be either piston knocking or rod knocking. Hyundai's quality has been going downhill, and lots of people have experienced knocking sounds with them. In terms of the oil filter, I think there is some truth to that claim because rod knock is usually caused by low oil pressure (not enough to trigger the light) or, also probable, improper manufacturing. The piston rods are connected to the shaft via journal bearings. In journal bearings, the oil is used to spin the bearing, so you need really good oil pressure to maintain proper separation between the journal and housing. So it could be that the non-OEM oil filter is causing a slight difference in oil pressure to cause a slight rod knock until the engine warms up, but I think it's a manufacturing defect on Hyundai's part. I would give the OEM a try, but if that doesn't help, I would definitely try to demand the dealer to replace your engine since it only has 28k miles.
Thanks. I will start with the filter and go from there
I had oil changed at the dealership. No noticeable improvement on rattle sound. Should I keep the car and try to get Hyundai to repair it or trade it in on a Corolla 😉
@rebaker
If your vehicle is still under warranty, then you should definitely have them fix it! At least now they can't blame it on the oil or oil filter because the dealer performed it. If it's not under warranty or if they are being stubborn about fixing it, then I would get rid of the car eventually. Sorry about the oil change not helping with the problem, and hopefully they honor a full repair.