Just bought an H and I see I have antifreeze in the oil

Anonymous-0

Well-known Member
I just bought an H that has water in the oil. I did buy it knowing it. Here is what I noticed and I hope I am correct. I am prety sure the owner did not know it. The tractor hasn't been run for a year. Upon opening the oil drain plug several drops of antifreeze can out as I loosened the draing plug. The owner was in disbelief and took the drain plug out and the oil was very black as can be. It was not milky. Brought the tractor home and leaving it sit for a couple of weeks I put the tractor in my barn and opened the drain plug slightly and more antifeeze came out. Is it possile that a frost plug could have rusted threw? Or what else could it be? What is the best way to detrime where the antfeeze is coming from?

I would appreciate your thoughts.
PS. Where are the frost plugs and how many are there?
Dave
 
Farmall engines are sleeved. It could be a gasket seal at the head. It could be a poor seal between a sleeve and the block. It could be a crack caused by a past freezing. Don't want to sound negative but you might want to consider a complete tear down with all new gaskets. Take a good look at the sleeves and pistons and look for internal cracks. You can purchase a sleeve and piston kit on this site. larry m
 
It sounds like I will be pulling the pan off tomorrow and see what I can find. Do farmalls have what I think they call wet sleeves where there is a o ring going around the sleeve?

Thanks Dave
 
There are no frost plugs that could rust through and allow antifreeze into the oil pan. Also, your H has a dry sleeve engine, there are no sleeve O-rings to worry about. The antifreeze could be coming from a leaking head gasket, or more likely, a cracked cylinder wall. I would say that you are going to have to tear the engine apart.
 
Would it be best to pull the oil pan off first then the head to find the source of the leak?

If the block is cracked, would it be ez to see?

Again, I appreciate the help.

Thanks
Dave
 
There is a soft plug in the front of the block behind the timing gears. Take off the pan and if you find it leaking at the front, I would be tearing off the front for a better look.
 
You can pull the oil pan off first, then look up into the engine and see if you can see drips of antifreeze that would pinpoint the leak. The head is going to have to come off no matter what. If the block is cracked it is most likely behind a sleeve and you would not be able to see it unless you pulled the sleeve.
 
Pull the pan. Don't pull the head just yet. Leave everything but the pan alone. Let it set and have a look to determine where it is coming from. If you have access to a radiator pressure tester use it. Pump it up to around 10 lbs. Let it set. Start looking. Once you have an idea of where the leak is coming from then start the tear down. I have cheated in the past and used K&W block sealer. Five years later it is still working.
 
Adding to whats already posted. Blocks serial # 179466 and lower had expansion plugs that could leak into oil pan. Tractor serial # should be the same.
 

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