Love the program... Liquid to liquid (L2L) is not slightly, but WAY more efficient. If you cut open the radiator and compare the size of the L2L versus an appropriately sized L2A (liquid to air) the air will need to be about 10 times the size to be the same efficiency. Ever see the heat exchangers on a boat? They are not very big and cool a big block running at WOT. One thing to mention is a lot of guys will bypass the radiator using the size cooler shown in the program. The box can be misleading as for the size cooler shown it might talk about a 16,000-24,000 GVW cooling capacity. How they figure this I don't know. The size cooler shown would not be sufficient for a stand alone application except maybe a Ford Escort. For a truck you would really need a stand alone L2A that is about half the size of the radiator. While TCC (torque convertor lock-up) will greatly reduce the heat out put of a trans, the cooling system still needs to outpace the heat production. TCC is engaged while cruising. Add throttle or reduce road speed and TCC will disengage. Climbing a hill with a load while driving in 4th or OD with no TCC will put a lot of load on the torque convertor in turn making a lot of heat. With an insufficient cooling system for the trans or even one that is boarder line, can heat up and not cool down unless you have a big downhill. Running coolers in parallel will not add much cooling capacity. The oil is going to flow through the path of least resistance which means it will flow where it hot and thin, not where it's cool and thick so not much will go through the auxiliary cooler. It should not be a worry about running too cool when having an aux cooler in series circuit. Keep in mind the L2L will warm the fluid before it enters the aux cooler. If you are bypassing the radiator with a stand alone L2A, then a thermostatic bypass might be desired. If it's that cold to cause a shifting problem then you wouldn't need an aux cooler anyway. Something to mention about the placement of an auxiliary cooler is it should be mounted within a 1/4 inch of the radiator. This way the fan pulls air through the cooler even at a stop. Guys that mount the cooler suspended way out in front or even worse yet, under the car or up in a fender will need an electric fan to gain any effectiveness of cooling. Synthetic oil is more resilient and has more stable and consistent properties over a wider temperature range than mineral oil. While better, the reality is most cars don't need it, or will act much different during the change. When you start pushing the limits on components is when the synthetic's benefits come to light. My name is Mark. Hopefully my experiences of being in the transmission industry for about 23 years will help with further questions. I've owned a transmission shop....better yet, it's owned me since 2006. With 16 Mercurys from 1958-1970 and Ford trucks and Broncos 78-79. I am Ford guy at heart. If you are doing a transmission segment, I'd be happy to help out with info. p.s. Unless you crash a Ford and a Dodge together hard enough to break two transmissions, there is no such thing as Mercon 4. Ford went from Mercon 3 to Mercon 5. Mopar had the ATF+4 name.
This is the correct response. From an engineering point of view, we figure that a liquid-to-liquid cooler to be at least 30% more efficient at transferring heat than a air-to-liquid.
I wish I could pay you to install a transmission cooler for me when /if I ever get a new car but sounds like you don’t own a shop anymore and probably live too far away anyway .
I appreciate your info thank you. Im not being a buttwad but do you rip most people off like almost all the transmission shops around here do? Im serious. If you answer no and you do you are a liar. All liars go to hell. If you answer no and you really dont thank you. If you answer yes then you are a honest answering thief.
A VW o1m is not happy with the stock cooler. 210-230 on a cruise for temps. I've seen 250 on a hard drive and that's not good. Of course water cools better ,but options are limited. By that kinda heat, maybe like 3 stock coolers stacked together would make a difference. So I sourced the biggest air to air cooler I could fit,and that was a DeRale 25 row stacked plate cooler. On average, I'm seeing like 70 degree temp drops, and probably a peak of 100.
Yes, yes you do need this. I took mine off and ran straight to the radiator. Started having trouble with the transmission temperature. I eventually smoked the transmission. Rebuilt it and it’s getting hot again. I’m putting my cooler back on
@@AutoRestoMod really? I thought with the fan spinning all the time on my SBC would cool pretty well still use a belt driven fan for the moment. No ac to pull through either.
@@dragan3290 I fitter one on the Holden Colorado for towing a caravan, same 6L50 transmission, from the tranny to the radiator then to the air cooler behind the grille, it's more efficient this way...
I had a 2001 ram 1500 v6 with a air trans cooler from New. It ran 220k miles while I owned it no issues. I beleave separate from radiator is best to keep water,oil contamination.
I put an air-oil trans cooler from a F350 Super Duty in my supercharged 03 Marauder (455rwhp) with a built 4R70 and 3000rpm stall converter (only locked up in 4th at light throttle over 55mph). The trans temp in the pan never went over 100* until I put a thermostat in the lines.
Awesome discussion!! I'm in Tucson... We have different needs. In my last Car, I ran an Liquid to Air Trans Cooler, BUT it was half the size of yours. Also, it was Inline with the Radiator's Liquid to Liquid Cooler, which better regulated the temperature. In "Winter", which here isn't that cold, most of us just zip tied a piece of cardboard in front of the Air Cooler. For the 110-120 degree SUMMER in traffic, that Liquid to Air was placed right in front of the Electric Cooling Fan, which gave ample air velocity at low speed and idle. Even THAT might be a bit of overkill for yours.... But just an example of those Coolers DO have a place in the Desert! 😉 Carmine ✈🚂🚙
@@AutoRestoMod Yeah.... But we get a total of only about 9 days a Year under 30. It's been in the upper 60's to mid 70s - and 78 on Christmas Day! 😭😭😭 I would actually welcome shovelling some Snow. And I grew up on Long Island, and went to School in BUFFALO!! ❄❄❄❄❄❄❄
When I bought my 67 mustang in ca. I added in a transmission cooler to remove the hot tranny fluid from the bottom of the radiator and cool the tranny on those 110 degree days. Worked great, engine temp came down to normal and my floor shifter was just warm not hot.
4l60E 2700 High stall Torque converter, Performance clutches and gears... Everyday driving no tow with heavy acceleration every now and then. hwy and city more hwy. SUV mid size is this cooler needed???
Nice video. A deep pan is a great choice ,Also on a tow vehicle run an air tank with a shut off valve or thermostat in your circuit 2 to 8 quarts that way you’ll never overheat the fluid.
Note lota of pick up trucks & trucks have clutch fans which is perfect because you always move air through as long as install in front of condensing unit + clutch fan is speed variable due to rpm which is perfect just get cooler with bypass to first heat up temps to operating temps quickly & matchnup the btu's per your vehicle weight & towing
I went to a mechanic today because a coolant hose was leaking. He told me he bypassed the leaking hose. I have a Pontiac vibe is it bad to do what he did?
I had a4l60e ,5.7l,with standard factory cooler no towing,jus drive it hard,got so hot melted all the clutvhes,the band turned brittle and shattered melted the shifter rod and melted the shifter were cmputer plugs all need replacement along with cross member,it had snapped in half, tif i new about cooler would have save a few grant,also manualized at gearbox
I was about to ask about this. 351 Cleveland in a 69 F250 with a newly rebuilt C6. I bought an air to liquid cooler. The truck will likey not tow again, (I have a 2017 F250 diesel for that). Thinking maybe the cooler is overkill?
I got a Fmx out of 69 mustang & was told it's better than c4 ? What you think on this the c4 was Burned-out dead total rebuild.. the fmx would be going in a daily driver ; )
The biggest problem with the fmx is there's not a ton of performance support for it out there. But if it's running I would go ahead and put it in the car and use it.
Hi. My truck is a 10 speed manual (Eaton) the gears stock was on high range (I was told that this was a minor issue) But The mechanic told me it's a big damage, they need to rebuild it for $ 3500 without labor!!!. I agreed. Then I found out, that he replaced it with another one, that one doesn't have a cooler (my transmission had one) tell me please if what the mechanic did is right/okay?. Should I accept this transmission ( the new one without the cooler)? He's working on the truck now, haven't finished yet.. I still have time... should I accept what he did or not?? Please reply 🙏
Also..automatic transmissions are becoming more popular with drag racing and turbo charged applications...the automatic transmission helps keep constant charge on the turbo spool..
But if you have a older vehicle that transmission if it’s hooked in series with the radiator and the cooler and it blows you’re in trouble go get a rebuilt soon as that coolant hits, the ATF that transmission is destroyed. That’s why you wanna get that radiator off of that transmission and run it directly to a cooler so if you’re cooler on your radiator is old Hr and it pops the right way it just costed you several thousand avoid the situation get it off of the radiator it’ll drop 20° cooler put it in the center of your radiator mount it correctly don’t hook it in series. Cooler transmission is the longer it’s gonna have a life on every day vehicle or just towing my vehicles it’s hooked into the radiator and it has external cooler from the factory. It gets disconnected from the radiator directly into the cooler only seen it happen too many times people think they can flush that system out once that coolant hits that ATF, you’re done it’s over get out the wallet start cashing out start crying the blues all this could’ve been avoided getting that radiator off of that transmission. Wanted it directly.
200r4 and 700r4 are both lockups As is the TH350L/C All auto OD trans are lockups. It's a gas mileage thing. OK the Ford AOD 81-@95 does not have a lockup converter, but 3+4 are ALWAYS locked up by design. Electric button on the shifter means Eaod.
@@hotrodray6802 How can a transmission always be locked up in any gear if it doesn't have a lockup torque converter? Without a lockup clutch in the converter, there's nothing keeping it from continuously slipping while under load?
I have a car with an automatic transmission, but I live in East Tennessee where I have to climbs big hills and switch back mountains often.. thinking of an extra intercooler..will help but should I install separate intercooler before radiator, after radiator, or bypass the radiator all together?
The drawing you have is basically how the 04 and up f150 4r70 coolers are set up except the thermostat is before both radiator and aux and they are in series. I believe t fittings are a better option for the lockup converter though due to the increased flow.
With a transmission fluid heat exchanger inside the engine radiator you are not going to cool the transmission fluid below the temperature of the liquid in the radiator, which we all know is above 212 degrees fahrenheit
Not only Towing Homies! replaced my plastic/alum leaky radiator with a high performance all-aluminum radiator and it has no option for automatic trans hook-up, so have to add a auto trans external cooler and thermostat. HELLO!
I went to a mechanic today due to a leaking trans coolant line and he told me he bypassed the line and that it wouldn’t affect the trans. I have a 2005 Pontiac vibe and I don’t know how I feel about what he said. Is it okay to just bypass the line like he did with my vehicle?
Kind of annoyed. I was sold a MASSIVE air to liquid trans cooler, for my 2001 tahoe. It already has a small one but they suggested this huge one from trucool. It also has a liquid to liquid one from factory. I installed the bigger air to liquid one and now the trans runs REALLY cold. It is like 80f at 55mph in 40f weather... I had to put a box over the cooler just to get trans to warm up. I bought a bypass to install... I am seeing a bunch of people installing this same cooler on internet for their 4L60E transmissions. I see nobody putting the bypass... what the heck. 😮
Doing a 200 4r swap and that has a lock up convertor...I didn't think they were very a whole lot different than the 700...but what do I know... I'm a Ford guy 🤔. Waiting to see what you guys do with the shifter..still column... right ?
Yes, we are starting to work through that now. Shifter is a C4...WHICH never came behind a Cleveland and is now resting comfortably against the exhaust pipe. HOPEFULLY we can worry that problem out on camera.
I gotta disagree with these guys. You don't cool your transmission fluid much by running it through the radiator so you basically defeat your purpose with an add-on cooler. And many pickup trucks either don't have a cooler or it's way too small. That's my experience. Run a temperature gauge yourself and see what works for you but in my experience, using a radiator to cool your transmission fluid is better than nothing.
When cruising temps are at 210-230f with the stock exchanger,and after a few hard rips it hits 250,thats too much. This vehicle actually adds a small auxiliary coolant radiator to shed the heat that the coolant gets, but 180 degree water is limited in its cooling. Some folks have turned the auxiliary radiator into a stand alone setup with an electric pump ,but its marginal. All i did was get an air to air unit that should be way too big,but ill still see 180-190 when running it hard. Usually at cruise its 140-160 now. If it does warm up in slow traffic ,as soon as it gets some more airflow itll go back down to cruise temps.
Looks like I've got a bit more research ahead of me. My original plan was to just slap a trans cooler on and go hoping it extended the life of my transmission some because I'll be towing about 10-15% over my weight rating and going into the Appalachians with it. But considering I'll only be doing about 5% of my total miles over weight and the rest of the miles are going to be regular granny style driving I might end up doing more harm than good if I'm not careful. So thanks for the info. Now on to more info gathering
Back in 1966 my ford f100 originally came with a water cooled transmission cooler bolted to the bottom of the transmission and getting its water supply from the bottom radiator hose
I remember seeing one of those on a cast iron FMX in a pickup. Must have been an option. I worked as a transmission tech at a Ford dealership and and did hundreds of overhauls but only ever remember seeing one of those coolers.
Again the fluid must take the path of least resistance. When one side is cold it tends to transfer the fluid to the hot side.therefore transfering the heat in term.double the cooling.
Thanks ...My cooler worked GREAT during the summer ,(I did a complete bypass of internal engine radiator cooler ),but when temps dropped oh I got a surprise LOL...Sluggish to delayed shifting until warm up and fluid level changes that I did NOT understand (still don't ),but tomorrow I will up hook everything back to stock config into my Be Cool radiator and accept what comes next ,if i need a new tran because of my foolishness ,so be it .....I have relearned a lesson ,that I had thought that I had boiler plated years ago ...."Do NOT go on whim ,do not go on MINIMAL research ,study target system until you have the dynamics as well as the static ,(in this case sales and It'll work problem is heat cooling is better this will therefore work),understood ....Thanks again for the information ..My th350 thanks you well ...Later....
I come from a country that's really hot almost year round and we have slow traffic with lots of stop and go. Would it be okay for my Nissan terrano 2002 automatic to set up both a liquid and air cooler system? Like the one you drew on the board. My car is like the Japanese version of a Nissan pathfinder...
U guys forgetting one thing. The cooler should be mounted on the radiator. So in traffic or wherever once the radiator fan comes in the air pass tru the cooler .. that how is done .. keep is simple
What about off roading applications. I recently went on a rough uphill trail and my trans temp light came on. The trail was easy enough for a stock truck but still ended up heating my transmission. Would you suggest adding a trans cooler?
I run mine on my jeep before radiator so it don't get too cold in winter. That old 304 makes some heat now. You guys didn't mention how crappy some internal radiator trans coolers are. I have scrapped out a few radiators they aren't created equal. I guess you guys don't think about the people offroading.
Say I’m towing cross country in winter, if my trans temp get too cold, with the air to liquid cooler. Is there a way I cud by pass the cooler and go back to stock without uninstalling. 2018 Tacoma Trd off road
Question I have is, do you have to have a bypass for the auxiliary cooler if you are placing the auxiliary cooler after the in tank cooler? Im thinking of adding one to my '82 F150 since I am going with the XTM converter that should be in the neighborhood of around 2000rpm stall in my C6 but it does flow more fluid than a standard converter to help with cooling but im still concerned with driving below 2000 rpm is going to generate too much heat in my C6. Especially considering im shooting for 2,750rpm at 75 mph which would have city driving still around 1,500 rpm. I figured there wouldn't be a problem direct hook up without a bypass considering the OE auxiliary coolers on my truck had the lines plumbed through radiator to auxiliary cooler then back to transmission with no bypass.
I was in the process of changing my leaking radiator. and uh-oh, what do I find; an oil cooler. The small radiator has fallen off of the mounting bracket. I never use my 2004 Dodge Grand Caravan for towing and never will. I want to just get rid of it. Is this possible without destroying the transmission?
I would never remove the cooler from a Dodge Caravan. It was notorious for frying transmissions and if it’s aftermarket someone added the cooler to let it live.
@@AutoRestoMod Here is a funny thing. When I worked at a Ford dealer back in 2002-05 the Explorers said the trans fluid life was 100K. The dealer mechanics still sold trans service as part of a 30K service. The 5R55 in those does benefit from a trans service at 30K.
For @ $12 you can get an anometer and measure air speed through your cooler/ radiator/ condenser at idle. Very handy. You'll be surprised at the velocity for an engine driven fan and electric fans. Also you'll see how poor the airflow is in the corners of the radiator. Also consider duct work around your cooler so air will go through it, not around it
I have both, from radiator cooler to external cooler what are your opinions on it? My car runs at 198-207ish so I don’t wanna be cooking my trans with upto 230 degrees. It’s been shifting really good the past couple days since I’ve installed it
I drive a 00 mitsubishi mirage. The model is known for transmission problems. I haven't got any so far. I only drive for domestic purposes is it necessary for me to install a cooler?
Based on what you said in this video about “running diesel through” before you send the regular ATF through, do you mean diesel gas or diesel oil? I also looked through your previous videos on transmissions and if you had one for transmission flush or transmission oil change but couldn’t find anything on that before I asked this question.
If You just had your C 4 rebuilt and youre not sure about the condition of your Current Radiator..your transmission warranty is void because You might be sucking up sll the aluminum dust and clutch material from the last 50 years straight into your bran new Trans. So replace Radiator or install external cooler until you can afford a new rad.
Normal transmission fluid temperature is about 160-175 degrees. It might rise as high as 200-220 degrees under demanding conditions but hopefully it won't go any higher.
Lol none. We just did an ode to Jeremy Clarkson from Top Gear and now The Grand Tour. He used to do that a lot. Eluding to it being something naughty. 🤣
But you gotta realize that tube is in hot antifreeze all the time so that transmission fluid is heating up at 230° it never cools if you have an older radiator or a new radiator and it burst and it goes into the system you’re screwed people don’t think about it that way avoid the situation Before it happens and these guys are talking about older sixes for a 70 W‘s AOD‘s they’re all old school keep that temperature down transmission fluid is not going to heat up as much stay cooler. It won’t break down as much pros and cons people got different opinions about it but from my experience avoid the whole situation if it blows you’ll be crying the blues.
The biggest fear I have is when that oil cooler in the radiator or liquid to liquid cooler gets a crack in it , or corrodes and coolant gets into the trans. That is my sole reason to illuminate the L2L.
cold air intake ). I was wondering if I can get an opinion if I need one for the hot temp. Or if my car is safe enough to handle it via it’s build design? Any thing helps
WTF guys, when you put that on the front of your radiator your engine driven fan is pulling air through it, to use the nonsense you are saying your engine should be cooking at a stop since no air is pushed through, you telling me you have no fan on your car? If your engine runs hot, overheating your radiator, you are cooking your transmission fluid, or if you are pulling through the mountains, your transmission is heating up the coolant in your radiator making it less sufficient at cooling the engine, they need be separated!
I use Ford's oil to water cooler between the oil filter and block.... Plumbed with the heater hose like police cars... Trucks use the lower radiator hose.
BTW you're heating and cooling your oil with 205* heater hose water. Makes a consistent temp that evaporates condensation. Engines don't make much oil heat at low rpms/idling. (Cop cars) For trucks/towing, Lower radiator hose is about 30* cooler.
Is it the original OEM trans cooler? Or is it an aftermarket unit you purchased & installed? I'm thinking of putting one on my wife's 2015 Traverse. I think the hot Arizona temps are causing it to occasionally slip going from 2nd to 3rd, & just recently, from 1st to 2nd.
OK Video but U should completely change the title as it is TOTALLY misleading. Should be called "the pros & cons of Air VS Liquid VS Hybrid ATF cooling" as the video talks VERY LITTLE about if you actually need a cooler or not. It also almost totally ignores the masses who drive NORMAL cars in traffic and just want to make sure their trans. is cared for (and / or only creates confusion for them).
