transmission leak help

So my 2015 toyota tacoma had a bad transmission, and we replaced it. The new transmission we put in was not leaking in the car we pulled it from. My mechanic swapped it to my car and it started leaking. I had him check it and he said main seal is worn and replaced that. He called me and said its still leaking and said it might be the transmission oil pump. tbh i dont know if he really knows at this point what hes talking about.

anyone have this issue before or know any common things that couldve gone wrong with this that i can possible check myself? i got underneath and cant seem to figure out exactly where its coming from but there is drips around the transmission, and the pan.

 

Have you resealed the pan? Was the old tranny good?

 

how many miles or ‘ old bad ‘ trans

how many miles on replacement trans

 

we did reseal the pan and no the old tranny was fried

 

74k on old tranny but all fluid was leaked out and was driven until it was fried. New one has 86k miles

 

must hv been 1 heck of a leak

spotting the garage floor like a dog with the clap

noticeable...………………………………………………..

 

Rear main seal on engine requires trans removal to replace and likely it…