Toyota Tundra Forums banner

1 - 20 of 28 Posts

·
Premium Member
Joined
·
100 Posts
Discussion Starter #1
May have posted this before but if I did, it was several years back.

Here are some suggestions that will help to extend the life and increase the durability of your automatic transmission.

These things are especially important for severe duty applications, but are also applicable to almost all vehicles.

1) Check your fluid level regularly- although fairly obvious, many people neglect to do this- or do this wrong.

Consult the vehicle's owner's manual if you are unsure as to how to do this correctly, as it can vary between different vehicles.

If you need to add fluid, it is always indicative of a leak. Unlike motor oil, your transmission fluid level can only go down if you are losing it somehow.

2) Service your transmission regularly- transmission fluid breaks down in the same way that motor oil does, but this is a step in preventive maintenance that is often ignored.

I've rebuilt countless transmissions over the years that clearly were never properly maintained- many of them had never had a single fluid and filter change.

Many manufacturers have different recommendations on the service intervals, but I recommend that this be done once a year or every 15- 20,000 miles.

3) Install an external transmission cooler- you've all heard the cliché that heat is the number one cause of transmission failure, well it's true.

A reduction of 40 degrees in your transmission fluid temperature can double the life of the unit.

When shopping for a cooler, a stacked plate design is far superior to a "tube and fin" type. If you're going to go through the trouble of installing one, you may as well put on the best kind.

On this same subject, it is also always a good idea to insure that your vehicle's cooling system is in optimum condition- most automatics utilize a fluid to antifreeze heat exchanger that is built into the radiator.

4) Install a transmission temperature gauge- with a gauge you will be able to tell when your trans is getting hot before it's too late.

5) Add a friction modifier- there are a few excellent products that can be added to your automatic trans that will significantly increase the life of the transmission. I recommend the products that are made by LubeGard.

On the same subject, avoid at all costs the auto parts store "mechanic in a can" and "stop leak" type products- they are mostly seal swelling agents and will usually harm the trans rather than help it.

6) Install an in line cooler filter- most automatics have some type of filter, however, there is always room for improvement.

Factory filters vary in effectiveness; many transmissions use something that isn't much better than pouring the fluid through a screen door.

The idea is to eliminate contaminants such as small metal particles and loose debris as effectively as possible.

In line filters are inexpensive, easy to install, and are highly effective in removing damaging contaminants from the transmission fluid.

I recommend the ones made by Magnafine and Filtran- in addition to their filter element, both of these products have a bypass valve in case they become clogged and also an internal magnet to further aid in trapping ferrous debris.

7) Use a synthetic based fluid- automatic transmission fluid serves many functions. It provides cooling and lubrication, it is the hydraulic fluid that applies the clutches and bands, and it even "drives" the car through the fluidic coupling that occurs in the torque converter.

It stands to reason that a synthetic fluid is much less susceptible to breakdown, a better lubricant, reduces friction and also has the capability of reducing operating temperatures.

More importantly, in cases of extreme cold and extreme heat, fluid made with a synthetic base stock is much more stable from a viscosity standpoint. If you don't believe me, try to pour "dinosaur" oil out of a container at -10 Fahrenheit- it's not exactly going to serve very well as a lubricant when it's the consistency of Jell-O.

8) Check transmission problems promptly- most transmission problems start out small and will get worse over time. Often times, major repairs can be avoided by taking care of a problem early on.

If you see a warning light on the dash, see a few drops of fluid in the driveway or even just have a feeling that something isn't quite right, there is no better time than the present to get it checked out.

9) Install a shift kit or modified valve body- while normally thought of as a "high performance" modification, almost any vehicle will benefit from shortening the shift time, reducing overlap and "cleaning up" the shift quality. This in turn reduces heat and also reduces wear on the clutches and bands.

Many of these modifications also address certain factory design shortcomings and eliminate common drivability complaints.

Most of the better engineered products have shift quality settings that are adjustable to achieve a result that is appropriate for the intended usage. The person with an 11 second rocket will have different needs than the person who occasionally tows a trailer with his SUV.

I hope that I didn't bore anyone with this long post.

-John

IPT Performance Transmissions
IPT on Facebook
 

·
Registered
Joined
·
696 Posts
Can one overcool the transmission when the ambient temps are around 100°F? Obviously I'm not talking about freezing temps.
 

·
Back from the dead!
Joined
·
1,778 Posts
Great info, and ^^^^ this guy has a good question. Can you overcool it?
 

·
Registered
Joined
·
4,071 Posts
john, thanks for the info.
whats your warrenty on your tranny's/converter?
since there bullit proof/last tranny you will ever need.
any on the shelf, ready 2 go?
so 1 could write a real thread on 1.
thanks,
gorilla
 

·
Premium Member
Joined
·
470 Posts
Great post, Question; Our Tundras (2005-06) supposedly don't need a trans fluid until 100K, I for one don't believe this. The Toyota dealer wants almost $300 to do this and of course it's after my 100K warrenty....stuff about speacial tools, must be within a certain heat range etc.

Yesterday I met a guy (who builds Hondas, drives a 2010 Tundra) told me I could do a drain and fill, run the motor to tempature, drain (track how much comes out) and refill through the trans "dipstick" hole. Will this work on the 2005? thanks in advance, CSM-H

PS: Is there a **** kit for the tundra (must of missed it) and what fluid would you recommend for a drain and fill if it can be done? Mobil 1, WS, etc.
 

·
Premium Member
Joined
·
100 Posts
Discussion Starter #8
Great post, Question; Our Tundras (2005-06) supposedly don't need a trans fluid until 100K, I for one don't believe this. The Toyota dealer wants almost $300 to do this and of course it's after my 100K warrenty....stuff about speacial tools, must be within a certain heat range etc.

Yesterday I met a guy (who builds Hondas, drives a 2010 Tundra) told me I could do a drain and fill, run the motor to tempature, drain (track how much comes out) and refill through the trans "dipstick" hole. Will this work on the 2005? thanks in advance, CSM-H

PS: Is there a **** kit for the tundra (must of missed it) and what fluid would you recommend for a drain and fill if it can be done? Mobil 1, WS, etc.
You can do it that way for sure. I like any good synthetic dexron spec, especially Amsoil or our blend (very close to Amsoil :) )

I'm not sure what a quadruple asterisk kit is :D

-John
IPT Performance Transmissions
IPT on Facebook
 

·
Premium Member
Joined
·
2,702 Posts
Definitely a good thread. Thanks.

John
 

·
Registered
Joined
·
6,755 Posts
Great info. It's good to have somebody who understands(to put it mildly) automatic transmissions on the forum. I honestly don't have the kind of mind that can picture so many moving parts at once. I really like the idea of installing an inline filter, I never thought of this and it would surely help. I have the OEM external cooler so the lines are easily acessable to do this, you just added one more mod to my list. A shift kit would be cool, but I have never heard of one for our trucks. Thanks again for all the info. Points sent.
 

·
Registered
Joined
·
4,071 Posts
hi, i would have loved 2 get a answer as to what your warrenty is?
i assume you don't stock them. i can't have down time, for that long.
i searched your web site, & can't seen to find warrenty info.
your forum isn't working either.
i'm going to try to do a search.
maybe i'll find some info.
gorilla




john, thanks for the info.
whats your warrenty on your tranny's/converter?
since there bullit proof/last tranny you will ever need.
any on the shelf, ready 2 go?
so 1 could write a real thread on 1.
thanks,
gorilla
 

·
Premium Member
Joined
·
100 Posts
Discussion Starter #17
hi, i would have loved 2 get a answer as to what your warrenty is?
i assume you don't stock them. i can't have down time, for that long.
i searched your web site, & can't seen to find warrenty info.
your forum isn't working either.
i'm going to try to do a search.
maybe i'll find some info.
gorilla
Sorry about that. I thought that you had made contact with us via phone or email regarding your questions.

The trans builds are typically done using the customer's existing unit (sometimes we can do cores, but they are very expensive and that is usually only done with our overseas customers).

Sometimes the cost of a core is comparable to the international shipping and import duties, etc.

I'm working on getting our forum working again, we had a problem with spam-bots creating dozens of bogus registrations per day. I need to upgrade the software without losing all the data that is associated with the forum. Sorry for that too.

As far as the warranty on built transmissions, it is 12 month / 12,000 miles.

-John

IPT Performance Transmissions
IPT on Facebook
 

·
Registered
Joined
·
696 Posts
So Gorilla...I guess you'll have to find a spare one and ship it down there, have them upgrade it and ship it back. Then you can do a remove and replace. ;)
 

·
Registered
Joined
·
4,071 Posts
hi thankyou,
would any 05/06 V8 tranny due?
i can buy 1 w/warrenty for 350 to 700.
the cost of renting a truck, while i was waiting on mine would be the same.
by the time i shipped mine & got it back.
since cost effective shipping would be ground.

is there anything i need to know before i buy 1?
like parts that need to be there beside tranny itself & tq converter.
i missed out on 1 w/11,000 miles. or so they claimed.
but i'm, sure i could get another.
since you are doing a full rebuild does it matter if the miles are high?

what would be the turn around time.
i'm serious about this.
i didn't need to call since i found 99% of my questions answered within your web site.

i'm trying to locate a full P rear end. very hard seach. seems they don't make 1.
and i haven't found a shop that can lock the LSD. i seen it done on TV, they weld it somehow.
thanks,
gorilla
 

·
Registered
Joined
·
4,071 Posts
hi john, all pro on ebay has several trannys for 370ish or best offer.
maybe you can get it for cheaper from them than i
.
i'll buy 1 of those, direct ship it to you, & when your done, direct ship it to my home.
i'll pay in advance for all.
a used tranny & shipping to you, a full rebuild, & than ship it to me.
i'll call you, for pricing.
when you have it all figured out.

let me be the 1st to buy 1, & write about it.

i'm hopeful we get a group buy.
but as usual i can't wait 4 ever.
price is everything.

there is 1 also available in calf. same price.
i looked up 2005 toyota tundra transmission on ebay you will see there is 200 items listed the last are all trannys.
gorilla
 
1 - 20 of 28 Posts
Top