2nd gear to 3rd gear
 

I have a crunch from 2nd gear to 3rd gear in my93 wrx import turbo which is the best oil to use been looking at some post but most of them are for later cars what is the best for the classics

Try getting the gearbox rebuilt to remove the crunch ( Rally Colin is good value and performance ! )

Oil - I hear the Redline Shockproof ( of whatever thickness suits your model year ) is good stuff for hard use or worn bits ... to smooth out changes etc.