Which HK engines/years are affected by bad engines?

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Did some searching but I’m still not sure. My mom has a 2016 Hyundai Sonata 2.4 non turbo. Owned since new, and always got Valvoline syn blend 5w20. Still under the 10/100k warranty, has 80 something thousand miles. Has always consumed about a quart over an OCI. Was taking with my dad about it, and I couldn’t definitively find if this car was ever affected by the bad engines, and/or the TSB recommending thicker oil. From what I can see, it’s not, but it looks like later years of this engine in other vehicles is.
 
Did some searching but I’m still not sure. My mom has a 2016 Hyundai Sonata 2.4 non turbo. Owned since new, and always got Valvoline syn blend 5w20. Still under the 10/100k warranty, has 80 something thousand miles. Has always consumed about a quart over an OCI. Was taking with my dad about it, and I couldn’t definitively find if this car was ever affected by the bad engines, and/or the TSB recommending thicker oil. From what I can see, it’s not, but it looks like later years of this engine in other vehicles is.
Yes. This model year of the 2.4L engine is affected. While it is not a direct recall, you should have the dealer perform the KSDS update and inform them of the oil usage, that way it is on record. Run 5w-30 from here on out. If you have oil change at the dealer, they will put 5w-30 in it anyhow.
 
Yes. This model year of the 2.4L engine is affected. While it is not a direct recall, you should have the dealer perform the KSDS update and inform them of the oil usage, that way it is on record. Run 5w-30 from here on out. If you have oil change at the dealer, they will put 5w-30 in it anyhow.
It may have actually had this update. I’ll have to get the VIN, or ask my dad. It’s been at the dealer within the last 2 years to have the valve cover gasket replaced under warranty. I’m sure they did the KSDS thing too then. I told my dad to run Valvoline Restore and Protect 5w30 the next couple OCIs. Seems like a possible good candidate for it. Plus it’s thicker, so that should help with the consumption too.
 
It may have actually had this update. I’ll have to get the VIN, or ask my dad. It’s been at the dealer within the last 2 years to have the valve cover gasket replaced under warranty. I’m sure they did the KSDS thing too then. I told my dad to run Valvoline Restore and Protect 5w30 the next couple OCIs. Seems like a possible good candidate for it. Plus it’s thicker, so that should help with the consumption too.

All H/K engines with GDI are affected. If the update was done it will have an orange dipstick. I believe original owners are covered to 15/150k, so just keep an eye on the oil level and don't worry about it.
 
All H/K engines with GDI are affected. If the update was done it will have an orange dipstick. I believe original owners are covered to 15/150k, so just keep an eye on the oil level and don't worry about it.
Not the case. The 2.4 and 2.0 turbo are the ones with the rod bearing problems. In my experience it's mainly the American made HK vehicles from that era that have engine issues. If the VIN start with a K, you're golden.
 
If she's the original owner, is still under 10/100, and has good receipts, get ready for a fight
And reference this TSB

https://static.nhtsa.gov/odi/tsbs/2023/MC-10247597-0001.pdf
1000005064.webp
 
My sons 2019 Santa Fe 2.4 Theta II engine does not seem to be in any of the recall/engine knock campaigns, but I still wonder..........

He is not the original owner (bought it at CarMax.) Does not have an extended warranty, but is considering getting one for at least the power train warranty. Not sure if Hyundai would sell that to him? Lots of third party ones, but not sure who to trust. Need to do some research. He has limited budget too.

I do all of his maintenance. Bought it at 44K, has 65K now. 4K oil changes. Last 3 have been Valvoline R&P 5W-30. Loses a little bit of oil, maybe a 1/2 - 3/4 quart in 4K. He keeps it topped off. Checks it every time he fills up. Hoping the R&P helps. On third oil change with it and it hasn't made much difference at all.

Rolling the dice.........
 
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Keep all the records for all maintenance. I also started tracking all the times I checked the oil in a notebook, writing down date, level, and amount added to top off. I was down to checking the oil at least every 3 days.
Mine was a 2020 Soul with the 2.0 Nu MPI motor that let go at 24,500 miles.
When I provided all of my records there wasn't a question and a "new" motor was installed in 3 days.
I had no issues but I've spoken with a mechanic in a local independent shop who told me he's dealt with a number of customers who've been denied warranty coverage due to lapses in maintenance records.
 
Op, my niece had one of those. The knock sensor went bad at 86 K miles and that caused it to run so lean that it destroyed the engine. The dealer replaced it for free and told her the engine that failed was not the original. A previous owner had one already replaced in it.

Less than a year after she got it back it started running bad. Her boyfriends dad is a mechanic and he found the catalytic-converter clogged. He put holes through it and removed the loose material and put it back on. She got rid of it soon after that and bought a new Mitsubishi Outlander.

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There's always going to be people who only look at price. So very low quality stuff still stays in business.

Poor quality engines built cheap don't last. You can change the oil often with very good oil but if it's built too cheap it's still going to grenade. A polished turd is stil a turd.
 
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Another step that may help is to use Hyundai/Kia filters. You also want to make sure the oil used passes SN+ and GF-5 standards. A 3750 mile oil change interval is usually best.

5W-30 is fine due to fuel dilution issues but keep in mind, if the engine does go it may be attributable to a manufacturer defect.
 
Moral of the story. Stay away from any GDI engine. Don't care the brand. Too much carbon/oil burning issues later for YOU to pay for.
 
My niece just had her 2010 Sonata fail at 160,000 miles (it died on the interstate she said it made a lot of noise?). Maintenance was hit or miss.
I'd say it's decent life but the rest of the car was in nice shape but hard to justify an engine swap/repair at that point.
 
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