2.5 using oil

They sell dye that shows up with a special light and glasses that you put in oil to see where leaks are. My dad used it with good success on an old 93 night hawk. Takes a few oil chabges for the dye to get out the engine but no biggie.

I learn something new here almost every day. Thank you. I just bought some of this and now, maybe, I can see what's going on.