T5 transmission oil mix prob

[mytyresarepumped]

I have all the tell tale signs of an oil heavy mix on my Mk1 T5, I got blue exhaust and a new spark plug fouling, wet and turning black within a week. Anyone know the best way to adjust the mix? I'm guessing that I can reduce the amount of oil entering but I just don't know where on the bike. Any help or tip much appreciated, Tim.

[jum]

check the gear box oil if it smells of petrol the clutch side oil seal has gone this will make it smoke

[Tosh]

in total agreement my sons engine is stripped down on the bench with the same prob dropped oil it was like water and stunk of petrol,i`ve just put the new seal in and its causing the bearing to be stiff to turn so watch for that one,i`m waiting for a reply at mo