Gearbox and overdrive share oil. Just forward of output flange are 2 sources of leakage, the speedo drive seal (an easily replaced O ring) and the rectangular overdrive sump. The latter is held on by 6 1/4" bolts and often leaks despite new gaskets and bolts all tight. I have found a copper washer under each bolt helps here. Plus of course the output shaft seal itself of course! this is also relatively simple to change out!
Steve
_________________ '73 2 door Toledo with Vauxhall Carlton 2.0 8v engine (The Carledo)
'78 Sprint Auto with Vauxhall Omega 2.2 16v engine (The Dolomega)
'72 Triumph 1500FWD in Slate Grey, Now with RWD and Carledo powertrain!
Maverick Triumph, Servicing, Repairs, Electrical, Recomissioning, MOT prep, Trackerjack brake fitting service.
Apprentice served Triumph Specialist for 50 years. PM for more info or quotes.
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