Fuel and oil. I haven't actually checked where exactly. I bought (2) new saws 2 years ago and (1) last year. One of the (2) saws started leaking last year and I ignored it. The one I bought last year just started leaking this year. Makes me think of the deal when a manufacturer uses an incompatible, or inferior o-ring. Either that or the few times I mixed fuel using the stuff with ethanol in it. Which was very seldom.
I just wondered if I asked that someone would have seen it so much they'd know without even having to think about it.
It’s now in logs out next to the wood shed.