So recently I installed a non world class t5 in my 92 because the factory tranny has some sore of issue (havent had the time to investigate). So I had this old non world class t5 given to me. I finally got the car running and its 90% together now. Now first off this tranny doesnt have a nuetral safety switch so im getting a code 67 ok no biggie. But I cant start the car with the key. I have to jump the solonoid and it fires right up. I think thats due to the NSS but I have no idea. Next, car running in nuetral or any gear I let up the clutch and it makes a terrible swirling sound. Not like a ferocious grind but a loud swirling sound. It has a stainless bearing retainer on it that was on there previously. My first thought was throwout bearing but I litterally pulled the car in my garage 3 months ago with the junk tranny and it didnt make that sound. Now The other thing I was thnking was I have dex/merc in this thing. When I cleaned it up it seemed to previously have gear lube in it. ive heard tons of different opinions on what it takes for fluid. and its either gear lube or dex/merc. I have no idea what year the tranny is or what it came from but I know its a non world class t5. any help would be awesome. also if anyone reccomends gear lube what weight?