2015 Hyundai Sonata Limited 2.4L Mobil 1 Annual Protection Good for 12K OCI?

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Originally Posted by tony1679
Originally Posted by dubber09
I'd suggest 5w-30 synth blend or full synth oil and OEM 26300-35504 filter.
That -35504 made both of my Kias run much smoother with same Penn Platt oil.

One way to prolong this engine's life is to replace catalytic converter at or before about 100K miles. They disintegrate and ceramic filler dust gets back into cylinders forming abrasive paste. Then [censored] breaks loose.


What? Last I checked exhaust (cat) is a one-way street...



In theory it is but since they moved cat close to exhaust mani the powder finds its way back into cylinders. I bet you may have heard of back pressure too, occurs during engine start and stop. This is not my imagination but a fact, seen many engines failed and cats cut open after that.
Cylinder walls get scored and crankshaft bearings eaten and turned, rods broken...

Here is one acknowledgment https://www.ctvnews.ca/autos/hyunda...es-as-engine-fire-risk-spreads-1.4316345

read this:

Documents show that high exhaust gas temperatures can damage the catalytic converters, which control pollution. That can cause abnormal combustion and damage pistons and connecting rods. A failed connecting rod can pierce the engine block and cause oil leaks that can cause fires.
 
As much as I like my Santa Fe, it doesn't look too promising for KIA/Hyundai if they keep going down those paths.

Fortunately, so far I haven't found anything recall or major problem related to the 3.3L Lambda II engine in mine.
 
Originally Posted by Triple_Se7en
Thankfully, this recall does not affect my recently purchased 2019 Hyundai Santa Fe.


My wife's aunt also owns a 2019 Santa Fe and received the letter about a month ago.
 
Originally Posted by dubber09
I'd suggest 5w-30 synth blend or full synth oil and OEM 26300-35504 filter.
That -35504 made both of my Kias run much smoother with same Penn Platt oil.

One way to prolong this engine's life is to replace catalytic converter at or before about 100K miles. They disintegrate and ceramic filler dust gets back into cylinders forming abrasive paste. Then [censored] breaks loose.


This problem was known to happen to Nissan Altima and maxima certain years. I knew a guy who had one that smoked like a chimney because his cat came apart inside. He went through a qt of oil every 500 miles.
 
*I bet it's only a matter of time ... Until the new Theta III engine is released then I believe all Theta II engines will be placed in the recall queue . I thought I was safe with my 2017 2.4L GDI Sonata - got my recall notice from Hyundai last week .
Originally Posted by Triple_Se7en
Thankfully, this recall does not affect my recently purchased 2019 Hyundai Santa Fe.
 
Originally Posted by ChrisD46
*I bet it's only a matter of time ... Until the new Theta III engine is released then I believe all Theta II engines will be placed in the recall queue . I thought I was safe with my 2017 2.4L GDI Sonata - got my recall notice from Hyundai last week .
Originally Posted by Triple_Se7en
Thankfully, this recall does not affect my recently purchased 2019 Hyundai Santa Fe.



When did they figure out the problem? Maybe they had fixed it by 2018 or 19.
I read that the problem was solved after 2015 thinking we just missed the fix since ours is 2014. If you got a recall for 2017 makes me wonder when they started fixing the problem.
Our car runs super smooth with ~76K miles but I got the ecu update notice couple weeks ago.

Edit:
Just read wemay's post regarding 2019 recall. So either they don't know how to fix it or decided to roll the dice
crazy2.gif
 
Last edited:
Originally Posted by ChrisD46
*I bet it's only a matter of time ... Until the new Theta III engine is released then I believe all Theta II engines will be placed in the recall queue . I thought I was safe with my 2017 2.4L GDI Sonata - got my recall notice from Hyundai last week .
Originally Posted by Triple_Se7en
Thankfully, this recall does not affect my recently purchased 2019 Hyundai Santa Fe.



My wife's aunt received a notice but it was for something else. I double-checked with her last night. Below is some information that can be found on the HyundaUSA website...

https://hyundaiengineinfo.com/safety-security/

Capture.PNG


Capture.PNG
 
Originally Posted by Triple_Se7en
That notice does not affect my 2019 Hyundai 2.4 and that's probably why I haven't been notified.
So - So - So happy mine is not involved in this recall.

"Yet" is the operative word here ... We both have the same 2.4L GDI engine , the same catalytic converters and spacing from the exhaust , same rods and rod bearings too most likely . I can find no information pertaining to any updated modifications between the 2017 , 2018 or 2019 Sonata 2.4L engines - "Come on in and join us - the water is fine" ! ...Just kidding , I sincerely hope you have zero issues with your new Sonata .
 
Originally Posted by ChrisD46
Originally Posted by Triple_Se7en
That notice does not affect my 2019 Hyundai 2.4 and that's probably why I haven't been notified.
So - So - So happy mine is not involved in this recall.

"Yet" is the operative word here ... We both have the same 2.4L GDI engine , the same catalytic converters and spacing from the exhaust , same rods and rod bearings too most likely . I can find no information pertaining to any updated modifications between the 2017 , 2018 or 2019 Sonata 2.4L engines - "Come on in and join us - the water is fine" ! ...Just kidding , I sincerely hope you have zero issues with your new Sonata .

Mine is the Santa Fe.
 
My Wife really wants the new Santa Fe, but i'm not doing it until the Theta III comes out. Can't find any concrete info on when that will be.
 
Sorry for those few who've had issues but, enjoy the Santa Fe. There's too much handwringing and worrying on here. That goes for every Make and Model.
 
Gotta agree with wemay's sentiment here....and that's less being an apologist for H/K as it is trying to figure out the actual numbers of effected engines as opposed to posts extrapolating that every H/K engine ever made is going to have the rod issue, or some valve issue pulled up from an auto site that might be as much overly opinionated "fear porn" as anything else, etc.

This issue with the Theta II is widespread but what are the actual numbers?? I have a Gamma II in a Hyundai vehicle that is statistically the least recalled vehicle sold in America from MY2012 through MY2017...when do my connecting rod issues start and when can I expect the valves to implode?? It almost seems like that on here sometimes....

On another website someone cited an "engineering" site that had the life of the Gamma II pegged at 150K miles when I know of a few that have 200K on the clock with regular maintenance. I'm sure that internet posters on here might take this 150K figure literally and the engineers might have a reason for this "anomalous behavior" if they also took it literally, but I'd defer to real life rather than extrapolate someone's "issue" from the internet. Unfortunately, defining "real life" can be the hard part. While I don't think Hyundai has been completely transparent on this Theta II issue ( should I have that expectation?? ), it would likely give me a warm fuzzy to know this issue effected 2.8%, 5.4% or 7.6% of Theta IIs ( in terms of engine failure ) over MY2011 to MY2017 than somebody telling me to start worrying about the inevitable.
 
I think the problem with being "worried" about this issue is...this is a major issue. This isn't a simple little air bag recall or potential oil consumption issue down the road, this is...you'll need a new engine if this happens to you out of extended warranty time.

If you're one of the people that trade your car in every two years? No problem. Or if you're one of those people that don't drive a lot and won't even hit 120,000 miles for ten years? No problem. However if you're one of those 30,000 mile a year people, who commute a ton and purchased the vehicle with the intention of putting 200,000-300,000 miles on it?? That's a problem. Because if this thing grenades at 150,000 miles you're looking at an engine replacement. You're not going to "fix it" and have the head pulled, the pan, hope the journal is ok and metal shavings haven't spread throughout the engine and slap a bearing in there...you're replacing the engine. And to replace an engine on a car with 150,000 miles is a $4,000-$5,000 job...and that's a USED ENGINE...a used engine with known issues. So you have to decide if you want to spend five grand on a 5-7 year old car and have it happen again in another 50,000 miles. When your car reaches 5-7 years old you want to drive it without a car payment or outrageous repair bills for a few years so you can save up for your next money pit.
 
Our Santa Fe 2.0T should "grenade" any day then since we're right at 155K miles. Sorry, not buying it. Not just because of my little anecdote either. Same goes for Honda's dilution issue, Chrysler's Hemi tick, Subaru's bearing issues, etc. Go on any forum, ANY, and you'll find "major issues with [my] car."
 
Originally Posted by Railrust
I think the problem with being "worried" about this issue is...this is a major issue. This isn't a simple little air bag recall or potential oil consumption issue down the road, this is...you'll need a new engine if this happens to you out of extended warranty time.

If you're one of the people that trade your car in every two years? No problem. Or if you're one of those people that don't drive a lot and won't even hit 120,000 miles for ten years? No problem. However if you're one of those 30,000 mile a year people, who commute a ton and purchased the vehicle with the intention of putting 200,000-300,000 miles on it?? That's a problem. Because if this thing grenades at 150,000 miles you're looking at an engine replacement. You're not going to "fix it" and have the head pulled, the pan, hope the journal is ok and metal shavings haven't spread throughout the engine and slap a bearing in there...you're replacing the engine. And to replace an engine on a car with 150,000 miles is a $4,000-$5,000 job...and that's a USED ENGINE...a used engine with known issues. So you have to decide if you want to spend five grand on a 5-7 year old car and have it happen again in another 50,000 miles. When your car reaches 5-7 years old you want to drive it without a car payment or outrageous repair bills for a few years so you can save up for your next money pit.


But what are the numbers and what's the inevitable?? If 2% suffer engine failure or a catastrophic failure before 150K miles...and if they make it that far, say less than one percent have this issue up to 200-250K miles ( if you have an expectation for the car to last that long ) then what's empirical reality and what's worry?? That's my point...it's obviously a major issue but how does that correlate with similar vehicles...is this rolling the dice or is it actually closer to aggregate numbers from similar vehicles from different makes over X miles?? Internet amplification can make things appear different than they actually are and the Theta II's own "me too" movement doesn't tell me how susceptible I'd be to this issue. I'm not saying everything's fine and I'm not saying it's horrendous...but it would be illuminating if you could actually see the numbers/percentages involved and decide what's worry or "that's enough for me to steer clear" based on how long you want to keep the car or whatever element is important to you.
 
Originally Posted by Vuflanovsky
Originally Posted by Railrust
I think the problem with being "worried" about this issue is...this is a major issue. This isn't a simple little air bag recall or potential oil consumption issue down the road, this is...you'll need a new engine if this happens to you out of extended warranty time.

If you're one of the people that trade your car in every two years? No problem. Or if you're one of those people that don't drive a lot and won't even hit 120,000 miles for ten years? No problem. However if you're one of those 30,000 mile a year people, who commute a ton and purchased the vehicle with the intention of putting 200,000-300,000 miles on it?? That's a problem. Because if this thing grenades at 150,000 miles you're looking at an engine replacement. You're not going to "fix it" and have the head pulled, the pan, hope the journal is ok and metal shavings haven't spread throughout the engine and slap a bearing in there...you're replacing the engine. And to replace an engine on a car with 150,000 miles is a $4,000-$5,000 job...and that's a USED ENGINE...a used engine with known issues. So you have to decide if you want to spend five grand on a 5-7 year old car and have it happen again in another 50,000 miles. When your car reaches 5-7 years old you want to drive it without a car payment or outrageous repair bills for a few years so you can save up for your next money pit.


But what are the numbers and what's the inevitable?? If 2% suffer engine failure or a catastrophic failure before 150K miles...and if they make it that far, say less than one percent have this issue up to 200-250K miles ( if you have an expectation for the car to last that long ) then what's empirical reality and what's worry?? That's my point...it's obviously a major issue but how does that correlate with similar vehicles...is this rolling the dice or is it actually closer to aggregate numbers from similar vehicles from different makes over X miles?? Internet amplification can make things appear different than they actually are and the Theta II's own "me too" movement doesn't tell me how susceptible I'd be to this issue. I'm not saying everything's fine and I'm not saying it's horrendous...but it would be illuminating if you could actually see the numbers/percentages involved and decide what's worry or "that's enough for me to steer clear" based on how long you want to keep the car or whatever element is important to you.

Going by the amount of these cars for sale privately with replacement engines I would say the % is much much higher than what you're thinking.
 
Originally Posted by Vuflanovsky
Originally Posted by Railrust
I think the problem with being "worried" about this issue is...this is a major issue. This isn't a simple little air bag recall or potential oil consumption issue down the road, this is...you'll need a new engine if this happens to you out of extended warranty time.

If you're one of the people that trade your car in every two years? No problem. Or if you're one of those people that don't drive a lot and won't even hit 120,000 miles for ten years? No problem. However if you're one of those 30,000 mile a year people, who commute a ton and purchased the vehicle with the intention of putting 200,000-300,000 miles on it?? That's a problem. Because if this thing grenades at 150,000 miles you're looking at an engine replacement. You're not going to "fix it" and have the head pulled, the pan, hope the journal is ok and metal shavings haven't spread throughout the engine and slap a bearing in there...you're replacing the engine. And to replace an engine on a car with 150,000 miles is a $4,000-$5,000 job...and that's a USED ENGINE...a used engine with known issues. So you have to decide if you want to spend five grand on a 5-7 year old car and have it happen again in another 50,000 miles. When your car reaches 5-7 years old you want to drive it without a car payment or outrageous repair bills for a few years so you can save up for your next money pit.


But what are the numbers and what's the inevitable?? If 2% suffer engine failure or a catastrophic failure before 150K miles...and if they make it that far, say less than one percent have this issue up to 200-250K miles ( if you have an expectation for the car to last that long ) then what's empirical reality and what's worry?? That's my point...it's obviously a major issue but how does that correlate with similar vehicles...is this rolling the dice or is it actually closer to aggregate numbers from similar vehicles from different makes over X miles?? Internet amplification can make things appear different than they actually are and the Theta II's own "me too" movement doesn't tell me how susceptible I'd be to this issue. I'm not saying everything's fine and I'm not saying it's horrendous...but it would be illuminating if you could actually see the numbers/percentages involved and decide what's worry or "that's enough for me to steer clear" based on how long you want to keep the car or whatever element is important to you.


Not sure what the numbers are but based on the issue, it's just something that personally I would worry about. I wouldn't worry about other things...every car has issues. I've had cars that have had known issues and avoided SOME of those issues with care and maintenance...others it couldn't be avoided no matter what I did. But nothing as big as total engine failure.

But yeah if I owned one if these cars I'd won't to prove everyone wrong and make it last until 300,000 with excellent maintenance. I did that with a Honda Accord transmission - that everyone told me would fail - just changed the oil every 15,000 and never had a problem. Of course every other known issue killed that car. Lol
 
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