03 GTX 4TEC SC OIL LEAK

[nacar]

I fired up the ski and was good, but the second time that we did, it started leaking oil that looks like is from the button because is not oil anywhere in the top of the engine. Could be by the oil cooler? We took the oil cooler out, does the oil cooler need O rings? We did not find O rings on it, so if yes maybe that is the problem. Could somebody share your ideas about it, please?
Thanks in advance

 

[nacar]

Never mind, I check the manual and it needs the O rings, now we need to see if that was the problem, could somebody tell me if is another place on the bottom of the engine that can leak oil? Just in case that after we install the O rings still leaking oil?
Thanks to anybody willing to help me.