I'm running Pennzoil synchromesh GL-4. Just changed it over the winter and the old oil was SAE 30wt. and I didn't notice any gold or metallic sparkle to it.
The linkage is all adjusted properly and has metallic bushings and are all snug.
With the engine off, I can shift through all gears with no problem or binding including reverse.
With engine running, it grinds going into reverse no matter what I do. I've tried double clutching, putting it in all other gears then going to reverse.......
One thing I noticed, If I adjust my clutch to have any space between my throwout bearing and the pressure plate levers, then I don't get enough disc departure and the car creeps in gear and is tough to get into first. Could this have something to do with the grinding?