1998-2005 Lexus GS300 Radiator Replacement

[@SacreDro]

Very nice car and engine, you can see the engineering and how simple is built so you can work on it, also a very reliable car.

[@redonKiLaus]

Definitely a great vehicle. Thanks for watching!

[@jacobmedrano6418]

I'm so glad that I found this gem of a video! Thank you for making these! Your videos a great help kind sir!

[@redonKiLaus]

Glad you enjoyed! Thanks for watching!

[@siucbset]

Water: You gave the wrong information on water. You are supposed to use Distilled Water. Purified Water is the same as faucet water except Purified Water has been filtered/cleaned more. Distilled Water has been de-mineralized which is what the Toyota/Lexus antifreeze requires.

[@pancratius8886]

Yea, I was confused when i saw that, lol even the least experienced mecahnics know this..

[@treycrews72]

thank you so much for making this video. had to do this on my car to get myself out of a bad situarion.

[@redonKiLaus]

Glad the video helped you, and thanks for watching!

[@BeaRrug66]

I would’ve liked to have seen the attachment of the hoses and lines.

[@spencerbox6705]

My lower temp sensor didn’t fit, had to do some modifyinh

[@spencerbox6705]

Modifying

[@poompoom500]

So, you use an M12 size bolt to plug the transmission lines!? Cool. Thanks for the info. It's at video frame 2:48.

[@AllxHailxQueenxSam]

Definitely realized he said the wrong thing at this part. I'd wish he would of corrected it.

[@erikchavez5220]

Thank you very much for the upload, I have the exact same car even same color that needs radiator replaced. it's a very helpful video, I'm going to replace mine over the weekend. hopefully it's as easy as you made it look. once again thanks!

[@redonKiLaus]

I'm glad you enjoyed the video. This is definitely one of the (if not the) easiest radiator swap I've done. Just make sure you have all the necessary supplies on hand and it should be a breeze, even if you're not the most mechanically inclined. Thanks for watching!

[@azimmey]

Thank You!! My 98 gs300 with only 124k started leaking last year but when it warmed up it never leaked but when it got cooler this fall starter leaking like a sieve again. No tranny fluid but lots of antifreeze. This should help. Fortunately less than a 100 bucks for radiator and can do myself.

[@redonKiLaus]

Take a look at your clamps for the radiator hoses as well - if they're worm gear (screw type), replace with the stock ones from Toyota/Lexus. Thanks for watching!

[@azimmey]

Ordered a Denso today for 147 😢. Can’t believe it was leaking at radiator where cooler line goes in. 😡

[@mosthated8186]

It does help. And thank you. So keep cap off till water is level. No movement basically.

[@redonKiLaus]

More or less...you'll always have movement ("waves"), but you want to wait until bubbling is gone. May take a couple rounds of "burping" the system. You can park on an inclined surface (many driveways are at an incline, or on service ramps) with the front end up to help speed up the process as well.

[@jaywalker3553]

Can I use just regular antifreeze 50/50 ? I used peakstone or Walmarts I can’t remember I just know it’s was 50/50

[@ganash11]

How does that air cooling hose come out of the ECU? It's the hose right below the upper Radiator hose?

[@redonKiLaus]

It is indeed. Thanks for watching!

[@jonbal1669]

Thanks for the video. My '01 GS300 developed a radiator leak and I ordered the Denso radiator from Amazon with the link provided. I'll take it to my local mechanic for installation as I don't have the tools for a diy project. Wondering why you don't mix distilled water with the coolant as usually prescribed? Also is it ok to use the foam strip for high temperature around the radiator. I also noticed you did not use the foam on the top part. is that ok?

[@redonKiLaus]

I typically use purified water with no minerals because deionized water absorbs minerals from the coolant passages and can cause premature wear and corrosion in the cooling system. That being said, since Toyota does recommend distilled water on the coolant bottle label, you're really doing no harm either way. The foam strips around the radiator are there from the factory on the OE radiator, so they are definitely fine to use on the new one. The only issue with them is the adhesive being weak - mine had some peeling issues on the sides after a few weeks, so I simply removed those and there have been no issues since. Hope that helps, and thanks for watching!

[@jonbal1669]

Thanks for the detailed information! Keep up the good job! Your videos are great, helpful and informative!

[@trakash4k525]

@Jon Bal does the Denso radiator work ok?

[@bjohnr]

@@trakash4k525 yes. No issues for 4+ years now

[@JosefwitdaCoatOn]

Great vid!

[@redonKiLaus]

Glad you enjoyed, and thanks for watching!

[@mosthated8186]

How do I properly fill the radiator? I don’t want to mess anything up. First time...

[@redonKiLaus]

You should just fill with 50/50 mix coolant until full (up to the filler neck), then bleed the system by squeezing air out of the hoses as well as running the engine with the cap off until you have no more bubbles coming out. Hope that helps, and thanks for watching!

[@jokzanlopez3870]

Where does the white plug go?? Cause I have the fans connected but the white one is loose

[@gsgangganggang6445]

How do you do a leakback test on the transmission cooler???

[@redonKiLaus]

You'd need to disconnect the lines and pressurize or pull vacuum. There should be a procedure in the FSM, but with the radiator/trans cooler combo being so cheap it's not worth the time and is more effective to simply replace the unit.

[@gsgangganggang6445]

@@redonKiLaus thank you!

[@SignTyDolla]

Where do you connect the coolant reservoir hose?

[@redonKiLaus]

There should be a nipple somewhere on the radiator I believe - I can't remember from memory and I gave this car to a family member a while back so I don't have instant access to it to reference anymore. Thanks for watching!

[@dawnpoint]

American cars can eat it. These really are the easiest to work on.

[@redonKiLaus]

I definitely agree, especially when the car is based on an FR layout. Thanks for watching!

[@conejo1562]

I have a 1998 lexus gs300 and I brought a radiator cap at a lexus dealer and it didn't fit I must of have a aftermarket radiator

[@conejo1562]

what kind of cap are u using on that radiator

[@redonKiLaus]

There are two different types of radiator caps used on Toyota vehicles of this vintage, Type S and Type N. The GS300 originally used a Type N cap, but the new Denso radiator I installed in this video uses a Type S cap. Very strange that they would change it, but I suppose we have to deal with it. This cap from Koyo should fit, but it does have a slightly higher release pressure than stock, so I suggest making sure that your cooling system is up to date maintenance-wise: amzn.to/2k1QBd2 HKS also makes a cap that fits and has the same release pressure as the original, but it is slightly more expensive: amzn.to/2jgsl2N I'm sure there are other options out there, but those are the options from brands I have good experience with. I hope that helps, and thanks for watching.

[@conejo1562]

thank you very much

[@alanmcclements108]

Do you need to top up the transmission fluid when you have reconnected the hoses at the bottom?

[@redonKiLaus]

If you lose any fluid then yes, you just need to replace the amount you lost. When refilling be sure to go slowly so as to not overfill the transmission, and be sure to check the level via the proper procedure with the vehicle running (see my transmission fluid change video for more info if you need it). Hope that helps, and thanks for watching!

[@kevincruz244]

Idk why you do the work and not show what your doing this video was no help it was just a step by step you need to show how to take everything off

[@shandorageorge2074]

No avalond