A mate has a Windsor and has asked me for assistance on an oil leak:

Apparently oil is leaking from the filter, similar to what you would expect from not tightening the filter tight enough. It is only dripping small amounts (2-3cm diameter patches overnight). The thought of a bad filter went out the window as he tried a different branded and more expensive filter after the second service.

I suggested he didn't oil the rubber gasket prior to putting it on but he assures me he has. We pulled the RH front wheel off and sure enough it is definitely coming from the filter.

My mind is lost... so i come here for suggestions.

Anyone know how to solve this issue?

Regards.

what model car is it? as the eb-el has the filter on the LH side.

take the filter off and check the condition of the mating surface

It's an EL.. The filter is on the RHS if you stand facing the car.

also check for a hair line crack,i have 2 v8s and they dont leak.the filter only screws on the extension and seals on the face.how much oil pressure has he got? mine run almost max. at idle.