Mishimoto radiator

[Carlos_lara96]

I am planning on upgrading my OEM radiator with the Mishimoto Performance Aluminum radiator. Has anyone done this upgrade yet? It seems that this is a fairly new product so there aren’t too many reviews on it as of yet.
Worth mentioning that my OEM radiator is doing just fine yet. I live in Southern California where summer temperatures easily reach over 120°f. I also plan to upgrade the trans cooler with the Mishimoto.
I don’t wheel my gladiator too hard as I mostly use it for Overlanding/camping but since the weather is so extreme out here I’d like to have the peace of mind that my engine/trans is as cool as can be.
Anyways any feedback on Mishimoto would be greatly appreciated!

This is the link to Mishimoto’s radiator btw
https://www.mishimoto.com/performance-aluminum-radiator-jeep-gladiator-2020.html

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[smlobx]

No direct experience but Mishimoto has a pretty good reputation in the aftermarket radiator business.
I’d be interested in hearing your experiences with it.

 

[BourbonRunner]

I have a Mishimoto in my e46, replaced the OEM. They're very well built.

I suspect that given the high temps you see and the larger surface area and coolant capacity of the Mishi you should see an improvement.

 

[Carlos_lara96]

I have a Mishimoto in my e46, replaced the OEM. They're very well built.

I suspect that given the high temps you see and the larger surface area and coolant capacity of the Mishi you should see an improvement.

Yeah, I figured the larger capacity of the radiator itself could only help with cooling. I’ve been reading a lot that JK mishimoto radiators tend to leak over time. Thats old reviews I’ve come across though so I think they must’ve corrected it by now. Also on the mishimoto link they mention that the radiator itself is engineered to withstand flexing and all that. Might have to give It a try I’ll let you all know how it goes.

 

[TheGrendel]

Yeah, I figured the larger capacity of the radiator itself could only help with cooling. I’ve been reading a lot that JK mishimoto radiators tend to leak over time. Thats old reviews I’ve come across though so I think they must’ve corrected it by now. Also on the mishimoto link they mention that the radiator itself is engineered to withstand flexing and all that. Might have to give It a try I’ll let you all know how it goes.

not old. all of the Mishimoto radiators leak in the JK. most people finally wizened up and stop wasting money on it. I expect the same problem happens in the JL/JT platform.

 

[Wheelin98TJ]

No way I'd swap out an OE radiator that's doing just fine for an aftermarket one.

 

[bakobobby]

I am planning on upgrading my OEM radiator with the Mishimoto Performance Aluminum radiator. Has anyone done this upgrade yet? It seems that this is a fairly new product so there aren’t too many reviews on it as of yet.
Worth mentioning that my OEM radiator is doing just fine yet. I live in Southern California where summer temperatures easily reach over 120°f. I also plan to upgrade the trans cooler with the Mishimoto.
I don’t wheel my gladiator too hard as I mostly use it for Overlanding/camping but since the weather is so extreme out here I’d like to have the peace of mind that my engine/trans is as cool as can be.
Anyways any feedback on Mishimoto would be greatly appreciated!

This is the link to Mishimoto’s radiator btw
https://www.mishimoto.com/performance-aluminum-radiator-jeep-gladiator-2020.html

While I haven’t used their radiator I can offer up the following.

I did a mishimoto intercooler on my 2014 GTI it is a solid made unit that performs far better than the stock one. Results were lower overall temps and a slower climb to peak temps. Believe it added a few pounds nothing major.

If I had to replace my radiator I would be looking at their offering.

 

[Carlos_lara96]

No way I'd swap out an OE radiator that's doing just fine for an aftermarket one.

You think the OE will do just fine in this heat? Even if going on trails in the middle of the desert? Serious question lol

 

[ShadowsPapa]

No way I'd swap out an OE radiator that's doing just fine for an aftermarket one.

Yeah, go back to the story of how these were engineered to cool even under harsh conditions to get their tow rating. The engineers worked their butts off.
People think - add another row to the core - diminishing returns as by the time the air gets to that final row, it's hot and doesn't really cool. Plus the thicker a radiator, the lower the air flow due to resistance.
I can't see them actually cooling better than stock. Jeep worked hard to get to the tow ratings and pass their tests, hard to imagine they'd have skimped on the radiator in any way.

 

[ShadowsPapa]

You think the OE will do just fine in this heat? Even if going on trails in the middle of the desert? Serious question lol

As long as you have the large alternator and big fan.

 

[Minty JL]

Mishimoto makes great products. I was at their R&D facility back in 2019 when I was doing the Beta testing for them.

 

[Carlos_lara96]

Yeah, go back to the story of how these were engineered to cool even under harsh conditions to get their tow rating. The engineers worked their butts off.
People think - add another row to the core - diminishing returns as by the time the air gets to that final row, it's hot and doesn't really cool. Plus the thicker a radiator, the lower the air flow due to resistance.
I can't see them actually cooling better than stock. Jeep worked hard to get to the tow ratings and pass their tests, hard to imagine they'd have skimped on the radiator in any way.

That makes sense, I’ll see how my stock radiator does this summer, like I’ve said before, I don’t push my truck too hard and honestly no one in their right mind would hit the trails in this weather in the middle of the desert lol JK! But yeah, I guess you convinced me to keep my radiator stock and save some money for other mods thanks a lot!

 

[Carlos_lara96]

Mishimoto makes great products. I was at their R&D facility back in 2019 when I was doing the Beta testing for them.

Honestly yeah, If they’d had something for my old k1500 I would’ve definately bought a quality radiator from them in a heartbeat

 

[Rusty PW]

On the 2 cars forums that I'm on. Mishimoto is known as Mishashittymoto. They don't have a good rep. The radiators seem to last between 18 to 24 months before they start to leak. Know of 6 engines that died because of their oil coolers failing.

I really hope that they get their QC shit together.

 

[Madtom]

I currently have one of their aluminum radiators in my sons 2014 BMW X1 3.0. After the 3rd factory radiator cracked I put this monster in as it is the same dimensionally as the E90 radiator(which is also the in E84 they just don't tell you.)and it has been 24 months since redoing all the coolant lines. The X1 would get heat soak during the summer with the Factory rad after hard runs. Now it never gets heat soaked and runs like 12-15 degrees cooler...it is also so efficient that I have to block off half the grill with cardboard during the winter otherwise the engine throws a code saying it isn't getting up to temp quick enough and goes into limp mode when outdoor weather is lower than 40 degrees.

https://www.mishimoto.com/bmw-335i-135i-auto-performance-aluminum-radiator-06-13.html

IMO, We have to remember when discussions endure about how factory engineers made all these engineering decisions to provide adequate cooling..... they are also held back by the factory bean counters who say you only have this much money to spend on this issue. pretty sure they met the standard at the most economical rate. If given a blank check pretty sure the engineers would have stuck additional oil and water coolers into the gladiator and put a more efficient radiator/intercooler into the front of the vehicle.

I know that once I get my JT, the warranty runs out, and if my radiator springs a leak I will lean toward putting in something that is designed with increased heat transfer in mind.

Factory cooling on the jeeps I own are not know for their longevity...... both the JKUs I maintain have are on radiator number 3 (2010,2011) and on the 3rd heater core (2011). The 2020 JLU hasn't given me any problems...yet.

Primer Gray has installed one of these( JTU mishimoto rad) along with the BPD aux rad cooler under the bumper and is showing decent temp reductions while towing. Not sure how much of his improvement is due to the Mishimoto or the BPD aux. Together he has given himself the ability to push the vehicle longer when needed before derating occurs.

https://www.jeepgladiatorforum.com/...-options-and-ideas.46298/page-70#post-1199495

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