2008 Hyundai Elantra Cooling System Service - Coolant/Antifreeze, Thermostat, Sensor, Radiator Cap

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Products used in this video include:
Amsoil Low Toxicity Antifreeze and Engine Coolant
www.amsoil.com/p/low-toxicity...
Amsoil Funnel
www.amsoil.com/p/funnel-g3638...
Distilled Water
www.walmart.com/ip/Great-Valu...
Hyundai Genuine 25330-3K000 Radiator Cap Assembly
www.amazon.com/gp/product/B00...
Hyundai Genuine 39220-38030 Water Temperature Sensor Assembly
www.amazon.com/gp/product/B00...
Permatex Ultra Black Silicone Gasket Maker
www.oreillyauto.com/detail/b/...
Fel-Pro 25538 Water Outlet Gasket
www.amazon.com/gp/product/B00...
Genuine Hyundai 25500-23010 Thermostat Assembly
www.amazon.com/gp/product/B00...
Wheel Chocks
www.amazon.com/Hopkins-11930M...
Safety Stands
www.amazon.com/Torin-Big-Stee...
Rhino Ramps
www.amazon.com/RhinoGear-1190...

[@ultimategamer505]

Love the attention to detail and color marking. More should be like this. Great video!

[@InsaneOil]

Thanks for the comment. Good luck with your repair.

[@ericwolfe1437]

Super good video and the way you highlight key items is editing gold and shows your superiority to other car videos that go so fast through and you don't even know exactly what they are talking about half the time.

[@InsaneOil]

Thanks for the comment. I try to keep things fairly simple to understand and follow.

[@kasel1979krettnach]

yes these videos are gold

[@Chima4289]

The best step by step instructions I have seen on the Internet. Thank you!!!

[@InsaneOil]

Thanks for the comment. Good luck with your repair.

[@DoesItWorkByJay]

Great job, love how you highlight things with green color. Keep it up.

[@InsaneOil]

Thank you for the comment. Good luck with your repair.

[@chrisrich1487]

Going to try this on my '06 Kia Spectra. Same motor. Very similar layout. Great job and love the color highlighting!

[@InsaneOil]

The process should be pretty much the same.

[@patwunited1]

You really made the job simple, I appreciate how descriptive you are, amazing video, I never comment on videos done by others I just absolutely had to give you the praise you deserve!

[@InsaneOil]

Thank you. Your comments are much appreciated.

[@Ryan-po8dg]

YOU HAVE THE BEST VISUALS WOW I'm subscribing right now just for them

[@InsaneOil]

Thank you for the comment. Good luck with your repair.

[@user-jc3xu6wo5i]

One of the best videos I ever watched.I like the creativity of highliting

[@InsaneOil]

The comment is greatly appreciated. You can watch the whole 2008 Elantra Playlist at: kzbin.info/www/bejne/e5y5nWataN5sf5I

[@TheBuckman1978]

Awesome video. Really appreciate all the info. Following all your steps! Thank you!

[@InsaneOil]

Thanks for the comment. Good luck with your repair.

[@allenmoretsky7756]

Wonderful, detailed video. Great colors and clear pictures. Thanks. Doing the same job today.

[@InsaneOil]

Thanks for the comment. Good luck with your repair.

[@anthonydarpino6694]

Excellent. Like the color coding. Helped me replace my thermostat.

[@InsaneOil]

Awesome. Glad the video helped you complete your repair.

[@santamariamike]

Simply brilliant explanation

[@InsaneOil]

Thank you for the comment. Good luck with your repair.

[@JerZeyFiveOh]

Fantastic videos! I also use Amsoil products on all my vehicles including my wife's 2010 Hyundai Elantra.

[@InsaneOil]

Thank you for the comment. I hope you are getting Amsoil at 25% off with free shipping as a Preferred Customer. www.amsoil.com/offers/pc/?zo=10458

[@Tina-ls1cg]

Excellent video, really appreciated!

[@malcolmdixon6025]

This is a great idea for flushing out the cooling system. A few points - 1) it's better to use distilled or deionized water for the whole process if possible 2) it's very likely that using the garden hose doesn't flush out the residue of coolant in the heater core as the hose water will take the path of least resistance through the head and cylinder block. The system would need to be closed and under a bit of pressure to force the water through the heater core. It's a trivial point though as there would only be a small amount of coolant trapped in the heater core. 3) I'm more familiar with Toyota engines which have a drain plug in the cylinder block. Opening this allows draining of all of the coolant without the need to undo the radiator hoses. The system can be flushed as a closed system by replacing the coolant with straight water and running the car till it's hot then draining the water out again. If it's not clear this step came be repeated. I'm not sure whether Hyundai car's have this drain plug in the block or not. A workshop manual should clarify.

[@InsaneOil]

1. I agree with you that it is better to use distilled or deionized water for the whole process. However, the repair manual specifies the use of a garden hose. 2. I agree with you on the heater core. However, the repair manual did not specify your method. 3. The manual does not indicate that there is a block plug.

[@carlosvalente9749]

Excellent video, very detailed and well explained. Thanks

[@InsaneOil]

Thanks for the comment. Good luck with your vehicle service.

[@AbelDevere]

Awesome job! this is the video that i'd been looking for re flushing and antifreeze mixture. very well detailed work! you did more than i expected - replacing the thermostat & other sensor - which is probably recommended being a 12 year old car. i just had a reservation on the use of tap water to flush the radiator (i think i did this long time ago :), it may be of insignificant effect but considering you're doing the extra mile it may be best to use distilled water as another guy suggested. ow, great mentioning that biodegradable coolant too. thanks a lot for the video!

[@InsaneOil]

Thank you for the comment. I understand the thoughts and comments with using tap water. However, the repair manual specifies the use of a garden hose. Good luck with your repair.

[@nicolaszuluaga2753]

NICEEEE !! very good video my friend !!! greetings from Colombia

[@InsaneOil]

Thank you for your comment. Good luck with your repair.

[@gustavocantu4775]

Excelente, me ayudo bastante el video felicitaciones!!!

[@InsaneOil]

Gracias por los comentarios. Muy apreciado.

[@virgile93]

très belle vidéo, merci

[@InsaneOil]

Merci pour le commentaire. Bonne chance avec votre réparation.

[@user-sr7ny3dj9c]

thank you so much

[@InsaneOil]

Good luck with your repair.

[@RepairRenovateRenew]

how lucky i am to have the most thorough youtube mechanic doing videos on my exact model year! Where did you get your shop manual? Also for others - Hyundai genuine radiator cap is the best way to go. motorad is the only aftermarket manufacturer (all other brands i tried had a motorad cap in the box) and the fitment is pretty poor. pay attention to the thermostat gasket, it is likely to leak if you dont get it right, mine did trying to use only rtv because the felpro gasket said it was for an austin healy on the package & it wasnt exact.

[@InsaneOil]

I primarily use Chilton/Haynes manuals for the foundation of my videos and then I fill in the blanks with research online. I also have some dealership mechanics that I will talk with when I can't find the answers I seek. Good tip on the radiator cap and gasket...much appreciated.

[@herbertmartin2913]

How to take off the short hose? I'm having problems getting to it. Mines blow out, what do I need to do

[@richfuturebydsk2562]

Thanks a lot 🙏 Much support from 🇿🇦 ZAR- Durban Rich Future by DSK Clothing ❤

[@Jusdippin78]

Hi, great video. If im just trying to replace thermostat should i do all this or can i just replace thermostat? Thanks, any info is appreciated.

[@InsaneOil]

If your coolant is still good… You should be fine with just replacing the thermostat and topping off the coolant level

[@danolanater]

So I didn't have access to a garden hose so I just manually dumped a few gallons of distilled water through the radiator cap.

[@InsaneOil]

Good solution.

[@irisbaez1972]

I did a thermostat change with the same blue gasket and never put any glue or make a mess like that and it work perfectly. I have 50.000 miles since that job and no leak at all. If I will do this job I think is better to flush the heater core as well and replace all hoses.

[@InsaneOil]

I use the gasket maker just to ensure a good seal. The hoses were in good condition so I did not replace them.

[@irisbaez1972]

@@InsaneOil How many miles had the car when you did this job?

[@InsaneOil]

@@irisbaez1972 There was about 100k during this service...however, I had previously flushed the factory coolant from the cooling system many years ago.

[@irisbaez1972]

@@InsaneOil got you. yes, my Elantra had 110K when I did services.

[@kasel1979krettnach]

great video - one remark on safety - double and tripple checking that the engine is cool at the beginning - great - but "topping off several times as you drive" in the ending is a bit contradictory ?

[@InsaneOil]

Agreed, always check that the engine is cool. With regards to topping it off several times. The only think I can say is "best practices".

[@Nenajrojas]

Hey , hoping to get a response soon . When I removed the electrical connection points the 3rd one to be exact , the little grey clip fell off and I couldn’t find it . Does it have to go back on or would it cause problems? If so where and what are those clips called to buy?

[@InsaneOil]

What time in the video are you referring to?

[@halimah6214]

*HI...NICE VIDEO SIR...BUT CAN I KNOW...HOW MUCH LITER COOLANT NEED FOR THIS MODEL???...2.0CC???*

[@InsaneOil]

The website says 7 quarts. www.amsoil.com/lookup/auto-and-light-truck/2008/hyundai/elantra/2-0l-4-cyl-engine-code-bd-dohc-b/?zo=10458

[@kasel1979krettnach]

no sealant maker on the temp sensor ? btw i got maybe a gallon out of the hyundai engine but manual says 2 gallons (7 liter) manuals wrong ?

[@InsaneOil]

Sealant is already installed from the factory on the sensor threads. I could have added an additional layer. Flushing the system will push out additional coolant.

[@hungngo4022]

Hi! My coolant reservoir in really bad shape, and I want to change it. However, I just changed the coolant and flushed the whole thing couple months ago. Do I need to flush everything again and change the coolant reservoir?

[@InsaneOil]

You should be just fine replacing the reservoir without having to flush the entire system. Obviously you will loose some coolant when you disconnect the reservoir.

[@jeremymullins1294]

When I removed the lower hose not much came out... but I when I opened the thermostat housing a bunch of fluid poured out. Anyone know why that would be? Also, there was no gasket on there from the previous coolant flush done at a shop.

[@InsaneOil]

Were you able to get everything up and running?

[@brandondrayton1673]

did you put the lower hose back on before runnig the water through the radiator??

[@InsaneOil]

Yes, I believe I did and then I pulled the lower hose again after to remove the extra water in the system.

[@Malanthus]

Be careful with those electric sockets when putting them back on, mine were very brittle and one securing clip part broke after I didnt line it up well. It doesn't seem like its going to go anywhere fortunately.

[@goodday126]

How do you know how much water is left in the system after flushing? Doesn't that change your coolant ratio?

[@InsaneOil]

If lowest point of the system is open, gravity will effectively drain the entire system. Thus, the remaining water in the system will have a negligent effect on the coolant ratio.

[@malcolmdixon6025]

I'm an Australian living in South Korea. I watched your video because I've recently bought a 2010 Hyundai Avante, which is the Korean domestic market equivalent of the Elantra, only the Avante has a 1.6 litre engine. I can't find much info on the Korean model, certainly not in English. Do you have any ideas where I can get help or a workshop manual in English? I have found an online manual for the American Elantra but the engine is different.

[@InsaneOil]

It looks like there might be some around, but as you as you indicated, not many. manual4you.com/products/2010-hyundai-avante-service-repair-manual?gclid=CjwKCAiAm-2BBhANEiwAe7eyFH6IuFjR-Wcy5gv4dKGQBFki-Ep9fFPVEjuA0plEbBxwLtxtIpRbdxoCHqsQAvD_BwE

[@malcolmdixon6025]

@@InsaneOil Thanks very much for the lead.

[@zacharytorres7385]

If the coolant is low can it cause a smell that somewhat resembles something burning?

[@InsaneOil]

It is possible. If you aren't getting adequate cooling in areas of your engine they can overheat and cause a burning smell.

[@dennispark2992]

Do you flush with the radiator drain plug in or out

[@InsaneOil]

I closed it back up to help direct the flow of water through the system and then out the upper radiator hose.

[@yashshah6328]

What manual did you use

[@InsaneOil]

Haynes

[@mckayver1306]

Can you remember how much coolant it takes. I'm going to flush my coolant next week and need to know how much I have to buy. Same model, Australia.

[@mckayver1306]

Found it in the manual. 6.6L.

[@InsaneOil]

@@mckayver1306 Sorry for the delayed response. Yes, you are correct. www.amsoil.com/lookup/auto-and-light-truck/2008/hyundai/elantra/2-0l-4-cyl-engine-code-bd-dohc-b/?volume=us-volume?zo=10458

[@mckayver1306]

@@InsaneOil thanks mate.

[@XfreshcakesX]

Followed this step by step and ended up with coolant leaking out of the lower nut on my thermostat outlet. Haven’t taken it back off to check but any ideas on why this didn’t seal?

[@InsaneOil]

Any solution to this problem?

[@yashshah6328]

Either the gasket or thermostat wasnt seated properly or you didn't give it enough time for the gasket sealer to harden and seal

[@irisbaez1972]

Amsoil MEMBERSHIP? REALLY? their product is expensive, shipping free if you spend more than $100. Come on man and on top of a membership fee? That's why I don't fall a fool.

[@InsaneOil]

Thank you for your comments. Yes, Amsoil products are typically a little more expensive when compared to the competitors. Competitor brands build their products to meet the minimum requirements whereas Amsoil begins at the minimum requirements and engineering from there to meet the specific applications they are designed for. Thus, the end result is a higher quality, better performing product. The Preferred Customer membership allows you to purchase Amsoil well below retail prices in addition to additional benefits throughout the year. In general, if you place an order exceeding $100, the cost savings pay for the Preferred Customer registration. If do not think you will spend over $100 within 12 months, then it would benefit you more to purchase Amsoil at the full retail prices. I am more than happy to answer any other questions you have. [e-mail]

[@heightsluis7875]

Is this your car

[@InsaneOil]

Yes.