If you have filled it with 5W/30 then it could very well leak as it is very thin and isn't recommended. What was recommended however was 15W/30 and that doesn't normally leak as it is tried and tested. However if you fill your transmission with this oil and it does leak then it is the seals that need replacing. It is quite possible that the oil that was in the transmission originally before you changed it was much much heavier than this,due to age or being just incorrect grade, as we often find out when people write in. What you should do is make sure that you have drained ALL the oil from the transmission and that it isn't overfull. There are 3 drains on a TO20 or TO30 and on any of the TE20 series but only 2 drains on a 35 series. If you haven't completely drained ALL the oil then it will leak as it is overfull. What you can do is remove the bottom screw on one of the round side covers below the seat and allow any oil there to run out until it stops and that will be the correct level. The dipstick may not be the correct one and you should mark it with the new level when you have done this. There is also the danger that because you may have overfilled the transmission, oil will get onto the brakes and the Clutch. If as you say it is leaking from the drain plug, then it needs a new sealing washer, it will not stop leaking even if you tighten it. The PTO leaking is often caused by grass etc being wrapped around the PTO shaft and being wound into the seal and that will wreck it. Make sure that the oil is coming out of the front drain if it is on one of the grey tractors, as it can come out of the weep hole underneath at the front of the transmission and then run back to the drain plug area and you may think that it is the plug leaking....John
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Today's Featured Article - It's Alright Where It Is! - by Anthony West. I have a tale of a different kind to tell. Whilst rooting in the hedge bottoms this week I had cause to visit Chapel lane Farm, the home of an eccentric gentleman by the name of Austin Kendall. I had heard rumours that an old Case Model C was languishing away in the back of one of the outbuildings there. So off I went in search of what would turn out to be a very rare and unusual tractor. Mr Kendall is an excitable chap to say the least. He is amongst the last of a dying breed of farmer who
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