the toy trans are notorious for being picky even the latest varieties. i like and use amsoil products but i dont think you'll be happy with your results.. you can try the synchromesh mix or use a appropriate oe fluid or sf mtl-p or r. i've used the mtl-p and it worked fine. Pennzoil synchromesh can be found in az next to the other gear lubes in the same type of round bottle. to save you $ i'd be inclined to try the Synchromesh mix with what you have.
drew, for your clunk check your mounts closely especially the rear. you may have a torn/rotted out mount. i've seen that also happpen. you can remove and fill the mount or replace it.
drew, for your clunk check your mounts closely especially the rear. you may have a torn/rotted out mount. i've seen that also happpen. you can remove and fill the mount or replace it.