I don't see the pics
This is what Hyundai gave me 2 weeks ago, here in Canada about $30CAD +tx 1gal
I think they use it on pretty much all cars.
It's concentrated - needs be mixed 1:1 with distilled water

 

I don't see the pics
This is what Hyundai gave me 2 weeks ago, here in Canada about $30CAD +tx 1gal
I think they use it on pretty much all cars.
It's concentrated - needs be mixed 1:1 with distilled water View attachment 479009

I typically mix coolant and 3/4 bottle water, the add to system.

I have folks in shop that dump 1 coolant, then top off with water, be it a service, engine replacement, got to keep eye on the dealer folks short cutting flat rate for the flag time on flag sheet

 

19010 is what we use for every sale here,, be it coolant change, engine replace

 

19010 is what I got for my 18 Santa Fe Sport. Owner's manual specs to mix 50/50 with Distilled/Deionized water. How many customers know this and how many shops just mix in tap water which will just cause problems down the road. Does Hyundai sell Distilled/Deionized water at the parts counter? Is there a part #? Do the mechanics have access to it or is tap water just used at dealerships ? What is the amount of engine replacements per month at your shop? There is a Hyundai mechanic on line who just finished his 43rd replacement of 2023. and thats just one mechanic at one dealership. He does 2 and sometimes 3 engines a day. Can't imagine how much money this engine debacle is costing Hyundai. Does anyone know what determines whether a customer gets a new vs reman motor?

 

Thanks Dog Patch--do you work at a Hyundai dealership or repair shop?

 

Unfortunately, Hyundai dealer service dept

 

Yes--I am losing coolant. Only about 14,000 miles on 2021 1.6T engine. Level is almost down to bottom of plastic tank. What causes this?

 

One of us.. one of us.. lol but to answer your question, no idea. A lot of us are losing coolant too.

 

I get the impression that Hyundai uses different coolants for different cars. My 2021 Sonata Limited (1.6 T) uses a red coolant. Other people talk about blue or green. Is there a genuine certified Hyundai mechanic who can clarify this situation?

 

Later tonight at home

 

Dog Patch--thank you very much for the answer.

 

Tap water may or not be okay, depending on hardness, and how long it stays in the system.
Water in my area is somewhat hard.
Back in the day (1975 Civic through 1988 Accord) I used tap water with no problems, but that was old school green coolant changed every 2 years.
In my next car (2006 Toyota Matrix) and the Tucson, I use pre-mixed 50/50; convenient to drain & fill.
Zerex Asian red for the Toyota and Peak Asian green for the Tucson, every 5 years.
If I were to use a concentrate long life coolant these days I would certainly use distilled water.

 

So, they're now working on my '21 Sonata Hybrid. The coolant was leaking into the exhaust system. They think it's an issue with the head gasket, but they're not even sure about that. 36k miles - Should still be under warranty. I'll keep you posted.

 

Likely EGR cooler leak coolant into EGR path, and goes into intake, then into cylinders, and out exhaust... check EGR plumbing and internal intake for coolant

 

If you look at all these used sonatas on carmax, the majority of them are low on coolant.

 

Typical 2.5 EGR cooler
- Bottom right port comes off exhaust manifold, so it "could" dribble coolant into exhaust tract, or get drawn up other direction into intake and run through cylinders

Tube from cooler to intake

 

Thanks for the info!
Is this on bottom side of engine?

Typical 2.5 EGR cooler
- Bottom right port comes off exhaust manifold, so it "could" dribble coolant into exhaust tract, or get drawn up other direction into intake and run through cylinders

View attachment 479296



Tube from cooler to intake

View attachment 479297