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8N Milky oil but good compression and normal spark plugs

V

ViperTrails

New User
Other than a cracked block/head or head gasket leak between oil and water ports which did not impact the cylinders, what else might cause milky oil on a 1952 8N with normal spark plugs and 90psi compression on all 4 cylinders?

I have read that if the intake manifold was drawing water through the mounting studs that the spark plugs would appear pressure washed not normal carbon covered.

The pressure test was performed with the coolant drained.

Suddenly after 10 minute idle, the radiator was low and the oil stick was too high.
mvphoto109049.jpg


mvphoto109050.jpg



This post was edited by ViperTrails on 08/26/2023 at 11:49 pm.
 


Generally milky oil in these old tractors is from condensation. Water is a product of combustion and if the tractor is not worked hard enough for long enough frequently enough to generate adequate heat to evaporate the water in the oil, the amount of moisture in the oil just keeps building up.
 


He posted ''Suddenly after 10 minute idle, the radiator was low and the oil stick was too high.''

While I agree condensation can cause moisture internally, his description sounds more like a crack or head gasket to me than water from condensation. For the radiator to go from full to low and the oil level being up in 10 minutes sounds like a serious flaw. I expect it needs to be opened up and inspected to find the problem.

Also, he hasn't told us if this is a new, to him, tractor he picked up with this issue, or if he has had it for a time and this issue has recently developed.
 
(quoted from post at 10:18:50 08/27/23)

He posted ''Suddenly after 10 minute idle, the radiator was low and the oil stick was too high.''

While I agree condensation can cause moisture internally, his description sounds more like a crack or head gasket to me than water from condensation. For the radiator to go from full to low and the oil level being up in 10 minutes sounds like a serious flaw. I expect it needs to be opened up and inspected to find the problem.

Also, he hasn't told us if this is a new, to him, tractor he picked up with this issue, or if he has had it for a time and this issue has recently developed.
Click to expand...


I can't tell you about the radiator and oil levels, but since we have no history to go on I have a hunch that they will ultimately turn out to be due to a much more tame cause than cracked head or suddenly blown head gasket.
 

Right above the picture in his first post he posted ''Suddenly after 10 minute idle, the radiator was low and the oil stick was too high.'' That is what I am going on.

mvphoto109078.jpg
 
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