I have a 51 M and I have noticed that the engine oil is more of a dark gray color and seems to have a gas odor to it. Any idea what may be causing this? With the carb arrangement on that tractor, it doesn't seem likely that a leaky needle valve would allow gas to travel vertically into the cylinders. I have checked the coolant level several times and it does not appear to be using any. Tractor runs very well otherwise.
I have noticed that there will be a oily black residue that appears to leak from the exhaust manifold gasket after the tractor has been running for a while. I was told that it is a condensate that forms and is nothing to worry about. I just added this in case it may be relevant. Let me know what you think!
I have noticed that there will be a oily black residue that appears to leak from the exhaust manifold gasket after the tractor has been running for a while. I was told that it is a condensate that forms and is nothing to worry about. I just added this in case it may be relevant. Let me know what you think!