External Transmission Filter for 4L80e [Archive] - Diesel Place : Chevrolet and GMC Diesel Truck Forums

: External Transmission Filter for 4L80e


SuperTuscan
05-06-2005, 10:49 AM
I'm thinking about swapping the fluid in my trans and installing an external filter.

Has anyone done the upgrade to an external filter? What filter/kit did you use? IIRC, someone listed a filter to use that was clearly better than the typical spin-on transmission filter supplied with kits. Ideas?

Any thoughts on fluid are welcome, too.

SnowDrift
05-06-2005, 11:02 AM
be careful with this and make sure you chceck your line pressures. The line pressure could, very well, drop below what would be desirable after going through the filter. I had one on a 700R4 once and removed it after about an hour of use.

Just something to keep in mind

SnowDrift

steiner43511
05-06-2005, 11:32 AM
definatly use the lubegard atf protectant in the red bottle as an additive. very good stuff. any atf is ok as long as you change it regularly. sure a synthetic is better but more money. invest in a deep pan while you got it tore apart. ive seen a couple of external filters at summit but have heard that flow was a problem.