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Generally it is the pinion seal(where the driveshaft attaches). On a high mileage vehicle a groove can be cut in the sealing surface allowing a leak to start. When it is taken apart, the sealing surface should be looked at carefully. If it is worn a 'SLEEVE-N-SEAL' ( FELPRO COMPANY)can solve the problem.......1930fcoupe It could very well be the pinion seal, or the differential cover gasket, depending on if the fluid leak is coming from the front or rear of the differential.
30$ 15 for dif fluid 10 on ultra copper and a half hour of your time
It may be your differential or your whole rear end or it could just be a worn out gasket.
Check the line from the differential to the backing plate and inspect front of cylinder under drum.
A 2001 Ford escape differential leak is usually caused by a bad seal. Replace the differential seal. The new seal should stop the oil leak.
Is the fluid coming from the vent hose ? When the differential fluid gets warm , it expands , and sometimes can come out the vent tube ( especially if someone has " topped it up " when it is colder ) or is it leaking from a front axle seal ?
Front main seal or timing cover leak.
The intake manifold or the timing cover seal.
Replace pinion seal, axle seals or cover gasket unless it is overfilled then drain excess fluid and. Check for proper level
You probably need to drop the oil pan down, remove the front cover and replace the cover gasket and main seal.
Is it actually leaking from the axle seal or once it got warmed up did it shoot some fluid from the front differential vent hose ?
the signs of a valve cover leak are oil on the engine oil is the only thing that can leak from a leaky valve cover