B&M 70268 SuperCooler Transmission Cooler Install on a 3rd Gen

[slaybrahamlincoln]

I flushed by disconnecting the transmission return line from my radiator and draining/replacing 1 qt at a time by turning the engine on/off until the fluid coming out was the same color as what was going in. That is: fluid was going into my radiator from the transmission, then out into a bucket instead of back into the transmission.

If you connect your cooler "in series" (first into radiator, then into cooler, then back to transmission) you could just take the cooler's output into a bucket. This does the original job, leaves the cooler full of new fluid at the end, AND flushes anything inside the cooler out without a chance to reach your transmission, all during install.

If you're skipping the radiator altogether (that's my plan)... well, same way, same result.

I'm not also flushing (did it a few months/hundred miles ago)- so I'll just be pretty much following BFAD's instructions.

How many quarts did you need to flush it completely?

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[jgue467]

How many quarts did you need to flush it completely?

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From reading here for a while, 12 will do it, 2 at a time after first drain (4.5 or so). :cowboy:

 

[mtbtim]

How many quarts did you need to flush it completely?

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If you'd like to check out a video on how to do the flush, check out this video [MENTION=102606]infamousRNR[/MENTION] and I made helping out another forum member.

<iframe width="560" height="315" src="https://www.youtube.com/embed/RumPXivBlk8" frameborder="0" allowfullscreen></iframe>

 

[theesotericone]

How many quarts did you need to flush it completely?

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Mine took 14 quarts to get to the new fluid look you want.

 

[JBDaddy]

How many quarts did you need to flush it completely?

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Sorry, took my 4R camping away for a while so I couldn't reply, but you got [MENTION=120071]mtbtim[/MENTION]'s video linked above and that's what I followed.
I don't remember how many quarts exactly. 15 maybe, total? I caught Valvoline Max Life ATF at a great sale price per gallon and got 4.
Then I had a hell of a time reading the correct fill level on the trans dip stick and drained and refilled a bit more and ended up getting a 5th gallon, and used past of that on a steering fluid drain and refill job.
Sorry I can't give a good answer. Follow the video.


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[ivopivo]

Thought I’d post here as it’s an active, related thread... did my full cooling system, timing belt etc last week and took apart the radiator to see how it looks.

At 255,000 miles I don’t see any corrosion etc, but I’m still happy I replaced the radiator and will do so again in 80-100,000 miles. It’s $150 and an easy job every 5-8 years.

I’ll be doing the aux cooler, in series, within a few days hopefully.

Photos attached.

 

[Artifact]

Just finished installing a 70264 with a magnefine filter on my truck. sheathed the tranny lines with about 3 inch long sections of 3/4 heater hose once it came time to run through the squared hole where the a/c lines run. thank you for the write up it helped a ton!

 

[Ryan_B]

Awesome stuff! thanks for the write up. I'll be doing mine very soon! And will definitely post up some pictures when I do!

 

[Reinout]

Hey all, I didn't see anything in regards to this, or maybe I missed it.

I have a 97 4runner 5 speed (3.4) with 385k. I'll be doing the cooler sometime soon but I was wondering about the external transmission cooler.

From what I've been able to find it seems like the automatics are the only trucks affected by the potential of coolant and oil mixing, but does the manual run or have the ability to run a cooler on it??

 

[alumarine]

Hey all, I didn't see anything in regards to this, or maybe I missed it.

I have a 97 4runner 5 speed (3.4) with 385k. I'll be doing the cooler sometime soon but I was wondering about the external transmission cooler.

From what I've been able to find it seems like the automatics are the only trucks affected by the potential of coolant and oil mixing, but does the manual run or have the ability to run a cooler on it??

Coolers are not needed for 4runner manual transmissions.

 

[gamefreakgc]

Hey all, I didn't see anything in regards to this, or maybe I missed it.

I have a 97 4runner 5 speed (3.4) with 385k. I'll be doing the cooler sometime soon but I was wondering about the external transmission cooler.

From what I've been able to find it seems like the automatics are the only trucks affected by the potential of coolant and oil mixing, but does the manual run or have the ability to run a cooler on it??

Nope! No need for one. Manual transmissions do not rely on fluid pressure (read as heat) to shift gears, just your foot & right hand! Your radiator also does not have the line or a separate cooling system for transmission fluid.

 

[StreetCreeper]

Thought I’d post here as it’s an active, related thread... did my full cooling system, timing belt etc last week and took apart the radiator to see how it looks.

At 255,000 miles I don’t see any corrosion etc, but I’m still happy I replaced the radiator and will do so again in 80-100,000 miles. It’s $150 and an easy job every 5-8 years.

I’ll be doing the aux cooler, in series, within a few days hopefully.

Photos attached.

What's the history on that radiator? Just curious if the radiator saw regular maintenance fluid changes. If no history, what was the coolant condition when you swapped radiators?

 

[ivopivo]

What's the history on that radiator? Just curious if the radiator saw regular maintenance fluid changes. If no history, what was the coolant condition when you swapped radiators?

Wish I could tell you... my friend at a Lexus dealer did the work and coolant seemed fine, but definitely not new. Radiator seemed original he said. 250k of those miles were in Arizona so that’s another reason for it to be so clean.

 

[4runnercrazy]

Nice writeup. I have to get this done just for piece of mind.

 

[Imprezme]

amazing write up!

 

[Ken-Cade]

Great write up!! My son and I will be doing this mod this weekend on our recently acquired '98, just a couple of questions before we dive in. I went ahead and got the 70264 after reading up on some transmission theory and decided to go for the added BTUs..

Question #1) As I understand these coolers are meant to be a supplement to the radiator as an additional transmission cooler. Have there been any issues using this set up as a stand alone air/liquid transfer cooler?

Question #2) I've read that these coolers are not as efficient with overdrive transmissions, which ours is, and I believe all 3rd gen autos would be. Any issues surrounding the use of this cooler with overdrive transmissions?

That's all for now, and thanks in advance. Looking forward to getting under the truck!

 

[4Runner4Leon]

I went ahead and got the 70264 after reading up on some transmission theory and decided to go for the added BTUs..

Question #1) As I understand these coolers are meant to be a supplement to the radiator as an additional transmission cooler. Have there been any issues using this set up as a stand alone air/liquid transfer cooler?

I went with the 70264 cooler, and installed it in series with the radiator cooler (i.e. not bypassed). I also installed a new radiator at the same time.

I'm very happy with the setup, and personally I'd recommend not bypassing, unless you have an old/suspect radiator and are not willing to buy a new one (in which case I'd buy a new radiator before buying an aux cooler ).

 

[alumarine]

Great write up!! My son and I will be doing this mod this weekend on our recently acquired '98, just a couple of questions before we dive in. I went ahead and got the 70264 after reading up on some transmission theory and decided to go for the added BTUs..

Question #1) As I understand these coolers are meant to be a supplement to the radiator as an additional transmission cooler. Have there been any issues using this set up as a stand alone air/liquid transfer cooler?

Question #2) I've read that these coolers are not as efficient with overdrive transmissions, which ours is, and I believe all 3rd gen autos would be. Any issues surrounding the use of this cooler with overdrive transmissions?

That's all for now, and thanks in advance. Looking forward to getting under the truck!

Question 1) only issue might be it won't cool as well if used stand alone.

Question 2) never, ever heard of this. They work fine with overdrive transmissions. I don't think they've made non overdrive's like forever.
Don't understand why they wouldn't.

 

[Ken-Cade]

I went with the 70264 cooler, and installed it in series with the radiator cooler (i.e. not bypassed). I also installed a new radiator at the same time.

I'm very happy with the setup, and personally I'd recommend not bypassing, unless you have an old/suspect radiator and are not willing to buy a new one (in which case I'd buy a new radiator before buying an aux cooler ).

Thanks Leon!! I agree after I posted that, I did some more reading through previous posts and research in my 4Runner. It came with an impeccable set of shop records from when it was new to present. Turns out the radiator was replaced in 2012, and just has about 20,000 miles on it. So now I'm thinking the best route for us will be to install the cooler in series with the radiator.

I think mile wise, the radiator has a good 70 - 80,000 miles in it, however age wise, I'm not so sure.... 7 years immersed in the coolant??? Any thoughts?

And it also raises another question as to what's a more effective process, having the oil precooled by the B&M cooler and then go through the radiator, or radiator, then cooler, then back to the transmission??

Thanks again for the thoughts and expertise!

 

[Ken-Cade]

Question 2) never, ever heard of this. They work fine with overdrive transmissions. I don't think they've made non overdrive's like forever.
Don't understand why they wouldn't.

Okay thanks!! I'll try and find where I read that and repost if I can. May have been a boiler plate, CYA, corporate disclaimer from B&M... I don't recall.