The question came up on Strattons AC discussion board about oil for the final drive on a WC. The operators manual calls for 240 or 250 gear oil. Is this weight oil still available? A tractor mechanic told me 140 would be fine. I used 140 but I have leakage at the cork seals around the hubs. I believe the heavier oil might help this some. Does anyone know where I can get new seals to replace the old cork seals. I found one dealership, I believe it was an AGco dealer, that had them for $50 each. That seems awfully high to me. The leakage is not a big problem right now, but once I get ready to paint I don't want any leaks. Any opinions or information would be appreciated.