Somewhere on a forum found a post about putting air into one of the transmissions cooler line to "backwash" the filter Which one and do you think it would work on the internal filter if it's clogged??

Throwing code p0762 ?

I have owned a 2001 XC70 for probably 12 years started with transmission issues. Changed the fluid right away to the recommended mobile 3309 fluid drained and filled numerous times and now I have around 170,000 miles on it in a running in the transmission issues again seems like the seafoam additive...