ok not going into the sealed for life debate...

however my gearbox runs fine.. apart from a surge or rather forcefull bit.. what ever.. when you put it in reverse... and only in reverse... and it appears to be like this when cold...

so i got thinking.

and found this

FILTER KIT-GEARBOX


any ideas? suggestion... it might just be a sticky selanoide but it could do with a flush.

anyway let me know please... thanks.

 

+1 on sticky or stuck solenoid - drain, check the solenoid pack and replace any parts not up to code, then - filter change and refill... My $0.02