Transmission cooler install help

ok so my next mod after the fog lights will be the tranny cooler. On the 16 2.7 there is no dip stick. So I have a few questions.

1. How do I know how much fluid to add without guessing?

2. How do I know which hose is the supply and return of the fluid coming from the radiator? (If you have pics or illustration than awesome!)

 

https://www.tacomaworld.com/threads/how-to-drain-refill-automatic-transmission.63851/





https://www.tacomaworld.com/threads/hayden-transmission-oil-cooler-install.108470/

 

i am trying to figure this out too.

a DIY for the 3rd gen with no tow package transmission cooler install would be great!

 

Once you figure out which line is supply it will be easy to route the hoses to the new cooler

 

because the transmission cooling system runs through the radiator?

 

It should....I added another cooler

 

The metal lines at the bottom of the radiator are transmission lines.

 

Thank you!

After reading and researching I finally figured it all out!

Ordered the following

$51 Hayden 678 Universal Rapid-Cool 9.5” x 11” Add-On Transmission Cooler – Not for Direct Replacement of the OE Cooler

Hayden 678
Wix magnetic filter 58964
Hayden mounting kit
Rubber flash washers
Extra house clamps
Extra 3/8 hose

 

Should work good. That’s the cooler I have

 

Anthony,
I am running the B&M 70268 (similar size to yours) and deleted the factory cooler.
Like the filter idea, may have to add that to mine
My transmission takes forever to heat up to normal operating temp in the winter.
Do you have any issues over-cooling running duals?

 

Lets have a peek at what transmission coolers do
TRANSMISSION COOLERS
If you do not have a transmission cooler on your truck and you plan to tow or haul heavy loads or you are in heavy stop and go traffic and use 4X4 low a lot , consider purchasing a cooler . The cooler thats built into your rad is designed to cool the transmission with the weight of just the truck by itself .When you are in 4x4 low , your torque converter is usually in the stall stage and creates a tonne of additional heat .You dont have much air flow going through your rad when you are in low range 4x4 .
160 - 200 are considered normal temps providing your engine radiator is functioning properly . If your engine overheats , your transmission will also overheat
Normal fluid temperature in transmission to be 175 deg. F.

Rate of oxidation to double for each temperature increase of 20 deg F above normal (175 deg F). As oxidation rate doubles, useful life of fluid is cut in half.

At 175 deg F life is 100,000 miles
At 195 deg F (20 deg above 175) life is 50k miles
At 215 life is 25k miles
At 235 life is 12k
At 255 life is 6,250
At 275 life is 3,000
At 295 life is 1500
At 315 life is 750

At temperatures much above 300 deg F the metals in the transmission will tend to warp, twist etc. high temperatures causes the formation of varnish deposits which impair or pre vent transmission operation.

At a fluid temperature of 415 deg F fluid life is 30 minutes!

Source: Empire Lubricants Inc.
Consider a scan guage http://www.amazon.com/ScanGauge-Comp.../dp/B000AAMY86
Here is the best information for the scan guage http://www.tacomaworld.com/forum/2nd...-pressure.html

Ultraguage is now offering transmission temps http://www.tacomaworld.com/forum/2nd-gen-tacomas/318340-ultragauge-transmission-temp.html

You could also use the Torque app with an Android phone as a cheap alternative to watch your temps http://www.tacomaworld.com/forum/per...d2-reader.html


A picture heavy write up showing a manual gauge install
https://www.tacomaworld.com/threads/trans-temp-sensor.456998/#post-13594000

$84 B&M 80212 Transmission Temperature Gauge Kit

https://www.amazon.ca/80212-Transmission-Temperature-Gauge-Kit/dp/B0002A596I


This is how Low Pressure Drop technology works::
When Automatic Transmission Fluid (ATF) is cold it is viscous. The unique Tru-Cool design allows the colder, thicker ATF to flow more efficiently through two open bypass channels positioned at the top of the cooler. As operating temperatures increase, the ATF becomes hotter and thinner, It's then directed through the core where it is cooled. Tru-Cool's highly efficient cooling technology combines improved protection against lube failure with optimal heat transfer.
http://www.amazon.com/Long-Tru-Cool-.../dp/B005XZXB1M
Long Tru-Cool Oil Coolers offer advanced cooling protection for many towing applications. The advanced technology out performs TUBE & FIN Designs, Delivers up to 15 times less flow restrictions, 30% more cooling delivers maximum heat transfer, Self-Regulating for maximum lube flow protection through start-up, varied temperatures and driving conditions, heavy loads and towing.
Here is Toyotas fluid flow guide ...Look at page 8 on this PDF http://www.toyotatundraforum.com/pdf/A750E.pdf

Installing a new radiator or you need to make sure your cooler is clean ?
Use this product $7 Lubegard 19001 Dr. Tranny Kooler Kleen Trasmission Line Flush, 13.25 oz.https://www.amazon.com/dp/B001DKNH8I?aaxitk=MYxoLs5I4LwRQxZC0Y9EDw

And here is a guy who recently installed a cooler correctly http://www.tacomaworld.com/forum/1st...agram-pic.html

cooler and fan install http://www.tacomaworld.com/forum/2nd...n-install.html

HERE is the Tacoma World Towing Bible https://www.tacomaworld.com/threads/the-tacoma-towing-bible.4031/

CAN YOU OVER COOL ? Yes . Transmissions are designed to operate at 170ish . There are demulsifiers in the fluid to assist with internal condensation but you still need the steady heat to bake that water off . If installing a cooler , ask yourself what plans you have for the cooler during the winter months .

When you first start your truck in the morning , the transmission uses the heat provided by the engine to warm the transmission .
This results in better fuel economy as well as improved transmission shifting .
With this said , I will always recommend using the factory in line radiator and then place the cooler after the original rad .
There are exceptions to this rule mind you . The strawberry Milkshake effect , a former transmission failure causing the internal rad cooler to plug up or you simply live in an extremely warm area

Last edited: Sep 4, 2017
This is what Towing in overdrive will get you

 

It does run pretty cool. About 150 average just cruising around. We don’t have real winter around here lol.

 

You cannot over cool the transmission as long as the thermostat is operating correctly. The thermostat opens around 195F ON A THIRD GEN

 

Your second gens have a lower temperature thermostat than the third gens.

 

It’s gotten colder here and now it stays around 140 or so....a little cool but it’s ok

 

Its been -14F here this last week
Engine runs about 181-184
Transmission is only heating up to 69-77

Are you referring to the engine thermostat?
Not aware of a trans thermostat

 

There is no trans thermostat as far as I know

 

There is a transmission thermostat on the rear of the third gen transmission. You can push in the plunger and it will bypass and flow fluid into the lines and coolers. This is how you fill and level the fluid

 

Ah that’s right I have heard about that!


So you don’t check the fluid like how you would on a 2nd gen?

 

You are correct ....No thermostat on 2nd gen Tacomas .
Third gen Tacomas have a thermostat .Making an edit to the cooler page .Thanks tow-coma
2nd gen Tundras have a thermostat .