So yesterday I changed the transmission fluid because the previous owner was running straight gear oil. I filled it up with Dexron III like the manual says and now it grinds 3rd and 4th when down shifting. Any ideas?
All NWC (non world class pre-85) T-5 use 70WT Gear Oil or Redline MTL.All t5 trans call for atf..your syncros are shot..I've seen gear oil destroy many t5 trans...expect the worst hope for the best on your rebuild
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