Hi,
My crx(d16a6) has been collecting small amounts of oil beneath the filter; there's a small ridge there and it collects on that.
Now I've gone through about 6 oil changes and each time thinking it was the filter. I tried different brands, cleaned the surface, lubed it, and torqued it but still there's a leak. I know the oil pressure sensor is right above that but as you know it's hard to see and it doesn't look to be leaking.
Anyway, I'm going to change the pressure sensor tommorow and see if that fixes the problem.

Are there any other areas that can leak to collect on that ridge beneath the filter?
This is my main concern if the sensor does not fix it. Like say the cam seal. Where would I look for a leak from that?
Or if it's the dizzy seal

Thanks.

 

Only other place I can think of is the valve cover gasket.

 

when you've changed the oil filter have you cleaned all around the area to make sure the oil hasnt just fallen from the open filter hole? worth checking the filter mating surface too just to make sure it's not gouged out or anything.
does it seem like it accumulates on the ridge and drips down the block continuously? or just a small puddle that stays the same size?

 

Yea I checked that, the surface is clean and I haven't felt any gouges on the gasket mating surface,
It is a small puddle, but I clean it and it returns. So I know it's leaking.
I bought a special socket to remove the oil switch and to my surprise it was incredibly easy to loosen, so I suspect it will be the source.
It had no traces of sealant either so I put a little bit of teflon on the it near the top, I only screwed it in til I felt resistance and then a bit more because I'm not sure how tight these things are suppose to go,, but I know they're fine threads, it is about 1-3 mm from the base of the switch touching the block(not sure if it's suppose to bottom out) . The manual says 15 ft lbs.
Once I put the manifold on and start driving I guess I'll see if it leaks anymore.
The sensor itself looked in good shape.