My 1999 honda prelude sh the oil leak from mount of the filter between the block and the parts with two hose connected where the oil filter screw i need a break away diagram how to remove or diassemble

An '80 prelude still on the road? The filter should be very simple. Loosen the fuel line clamps, pull the old out, put the new one in, making sure the direction of flow is correct. Tighten up the hose clamps, run the engine and check for leaks at the fittings.

Pull the oil filter off, remove the mounting adapter and replace the "O" ring seal.

Yes, I think you're right that it's the seal that is leaking.

The oil is most likely leaking from the oil cooler seal. The oil cooler is the square aluminum piece that the oil filter screws onto. To replace the seal, remove the filter, remove both coolant hoses that attach to the cooler, remove the nut that secures the cooler to the block and slide the cooler off the tube. Replace the rubber o-ring seal which is available at the VW dealer. It's inexpensive. Replace everything in reverse order. Good luck

oil filter screws onto an adapter housing which also has the pressure sending unit on it (above oil filter). This adapter housing bolts to the block with 3 bolts. if oil appears to be leaking from where the adapter housing meets the block (especially at the rear side of engine near bottom), then you need to replace the siamese o-rings between the adapter housing and the block ($12 part at dealer). remove lowest 12mm bolt and loosen top 2 12 mm bolts(top 2 bolts won't come out unless you drop the engine down, but loosening 1 inch is all you need), replace o-rings and retighten bolts. be careful not to get dirt/grit between block and adapter. just finished doing this to son's 95 2.7 v6 which was leaving an 8" puddle of oil after idling for only 1 minute-worked perfect

check valve cover gaskets

Is it just above the oil filter which is left rear of engine.
The oil pressure switch is there and famous for leaking.

it look like your car's oil filter is loose tight it to stop the leak

you can pull fuel injector fuses and remove the gas cap but try to start it a few times so it relieves the pressure that was there...if it does not work on some honda i put a rag underneath the fuel rail and open the large bango nut that connects the line to the fuel rail just crack it 3/4 turn till it leaks a little and let it squirt out the pressure just wear eye protection its pretty easy fuel filter to do..

make sure they are tight
could be time for head gaskets
make sure the old gasket from the old filter came off the block sometimes they come off old filter and stick this causes a leak due to improper seal.