I have an oil leak that seems to be coming from the passenger side of the engine.The leak is about the size of two quarters.
But when I check the oil level the oil is full after 3K miles.
It is a 2.2 with a manual transmission.

About four months ago I had an oil leak in the front of the engine.I added Auto-rx and it stopped that leak but now it seems to be coming through another seal.

Any suggestions are appreciated.

 

If by passengers side you mean the side with the timing belt there can be several areas that leak.

The cam and crank shaft seals and oil pump seal. It is also possible but unlikely the valve cover is leaking on the side.

To completely inspect the seals the timing cover needs to be removed.

Suggest you remove the passenger tire and with chassis secure start the engine.

Look for dripping oil from under the timing belt cover.

The oil pump seal is under pressure when the engine runs, If it is this seal a LOT of oil can drip out as the engine runs. Perhaps 1 quart per 100 miles.

Suggest you start checking the oil more often. As depending on the seal, the leak can get worse fast.