What are you using to add transmission fluid after drain??

It looks like a pain to get at the fill plug I'm thinking a large SYRINGE 1.5L would work best. What have you found that works well on the Tundra?

 

Run vinyl tubing from the engine bay to the fill port. Attach funnel to tubing.

 

Yup. 5/8" O.D. 6' long piece. Presto.

Once you get the tube routed (drivers side) it is useful to get it nicely positioned in the engine bay for adding fluid then tape it into position so it doesn't move. And cause I don't take chances on spills I tape it secure also down at the transmission.

 

Exactly on both previous. Exactly.

 

I did that with the front dif other then the tube kinking it worked good thanks.

 

Worked for me

 

I use a slippery pete pump on my transmission, diffs and tcase. It works great and no needing to snake tubes from above.
https://a.co/d/9Y0DPwC

 

I use $10 pump up sprayer from Home Depot, remove nozzle and heat and bend wand to a hook.

 

This^^^
Built these from pump sprayers and 3/8ID tubing. 3D printed the yellow stoppers

Big one is for differentials just used the smaller for the transfer case.

 

Same .easy