I'm running a 23 hp Briggs Longtail. At full throttle, around 3600 rpm, there's an oil leak in the back. As far as I can tell it's coming out around the dipstick seal. It only does it under a load, and I'm scared to try and look back there going across the water. It won't leak running it on the trailer so I'm not positive that's where the leak is.

So, full rpm under load.. It's tilted down, but so is everyone else's. Oil is new and proper level. Does this condition mean something bad is coming? I replaced the seal and it made no difference.