6L80 external filter DIY

[CyaDwnthaRd]

Hello,

I happened across your post and am planning my own installation of an auxiliary transmission filter. 

I do have questions?  Is there any data regarding flow restriction/constriction on the return fluid that could prove detrimental?  Secondly, from the posts it was mentioned using rubber hoses with barbed connections.  Can I assume the pressures at the INLET & RETURN are low pressure?

 

My filter says not to exceed 90 psi.

 

Thanks again. 

[the33z33]

Interested in pan drop follow up on this set up as well. 

[cossack]

On 2/18/2019 at 10:09 AM, CyaDwnthaRd said:

Hello,

I happened across your post and am planning my own installation of an auxiliary transmission filter. 

I do have questions?  Is there any data regarding flow restriction/constriction on the return fluid that could prove detrimental?  Secondly, from the posts it was mentioned using rubber hoses with barbed connections.  Can I assume the pressures at the INLET & RETURN are low pressure?

 

My filter says not to exceed 90 psi.

 

Thanks again. 

I have no way of knowing what the total restriction this set up adds.

Also not sure what the exact pressure is in this circuit. One thing is most oil filters are rated to about 300 psi. It would be safe to say that its probably below 300.

I know my answer is not very helpful. Do let us know what you end up doing!

 

[cossack]

On 5/8/2019 at 10:36 AM, the33z33 said:

Interested in pan drop follow up on this set up as well. 

I updated first post.

 

Edit: Cant change original post.

 

Update.

Changed ATF, filter and dropped the pan Last Sunday (7-28-19) with 50,548 miles on the truck.

Oil filter looked very similar to the one in original post.

Pan looked great! Only shmoo was on the magnet and no build up of any kind anywhere else. Grey stain is left over from water when I tested my new weld in drain plug. I left water in the pan for few days to make sure it wasnt leaking.

 

 

 

 

 

Magnet shmoo

 

 

After wiping off the oil.

 

 

 

 

 

Edited August 3, 2019 by cossack

[Bobaloo22]

Looks great! One question, how or what did you do to get the clearance between the pan and exhaust. Thanks!

[cossack]

I used a ratchet strap and a jack to pull against a cross member.

[flyingfool]

if you want the best trans bipass filter on the market, this is it , beats screw on filter every time.

check it out. i've used these on past truck and it cleans the trans oil so well it actuallty filters out some of the red dye in the oil... 

https://www.frantzfilters.com/

[cossack]

On 8/3/2019 at 12:59 PM, flyingfool said:

if you want the best trans bipass filter on the market, this is it , beats screw on filter every time.

check it out. i've used these on past truck and it cleans the trans oil so well it actuallty filters out some of the red dye in the oil... 

https://www.frantzfilters.com/

I think that Frantz is meant to be used as a bypass set up where is this one is a full flow, inline filter. Thanks for the heads up though.

[flyingfool]

full flow isnt neccessary, you just want to clean the oil. but the frantz can be configured to run full flow, its not a problem. just the filtration level is so high on a frantz it possibly can clog easily after 5000 miles of catching debris

[cossack]

On 8/5/2019 at 11:07 AM, flyingfool said:

full flow isnt neccessary, you just want to clean the oil. but the frantz can be configured to run full flow, its not a problem. just the filtration level is so high on a frantz it possibly can clog easily after 5000 miles of catching debris

Doesn’t sound like it should be used in this case.

[flyingfool]

i use them on most of my heavy duty truck transmission with great success.. when i pull the filter roll after 8000 miles one side is black from super micro fine metal and the otherside is pink and clean. the y are amaizing products. 

another company is called motorguard... similar style filter

[SparkKnock]

Hi , any update on how it’s holding up have you had any leaks? I’m curious to see how the copper line is working out for you , with all the vibrations and heat cycles I would be worried about the copper line fatiguing and cracking . Similarly as the lines crack on air compressors . Great job on the detailed tutorial I’m getting ready to do the same on my truck just wondering if you would go the same route again . Thanks 

Edited January 25, 2020 by SparkKnock
Misspell

[flyingfool]

did you cut the filter open to see inside?

[cossack]

On 1/24/2020 at 10:47 PM, SparkKnock said:

Hi , any update on how it’s holding up have you had any leaks? I’m curious to see how the copper line is working out for you , with all the vibrations and heat cycles I would be worried about the copper line fatiguing and cracking . Similarly as the lines crack on air compressors . Great job on the detailed tutorial I’m getting ready to do the same on my truck just wondering if you would go the same route again . Thanks 

Been off this forum for a while. Truck has 75,000 miles on it and I haven't had any problems so far. 

How did you install go?

 

 

Edited February 16 by cossack

[cossack]

On 7/26/2020 at 4:21 PM, flyingfool said:

did you cut the filter open to see inside?

I did, here is a link to post I made on another forum (hopefully its allowed). I changed it in 2019 and in 2023. 

 

link

Edited February 17 by cossack