Oil leak

Hi Alan, did you find the source of this leak, particularly on the top. Did you fix it?

Hi Alan

I would clean it up with some spot cleaner like brake clean (just the stain you can see, don't wash the whole engine off) Take a clean pad and tape it to the top of the engine area where it is stained.  Do some test flights and look for where the stains are on the pad.  Under the pad by the case seam you have an issue.  It might as Roger suggests be coming from a cylinder O-ring or even from the rear prop shaft seal.  This area of the engine usually gets a lot of turbulent air when flying due to the gearbox so oil can migrate from other areas and deposit there.  Best to check and see from where.

Please check the crankcase serial number.  Early 2006 still used a consecutive serial number...like XXXXX, all numbers together.  Mid 2006 they changed the crankcase and the serial will be year, then a separation and the number within that year like XX . XXXX  The crankcase serial is located on the lower side between the cylinders and will be stamped into the case (not the cast numbers but stamped in) 

Cheers

Rotax Wizard Alan's post was from 2018 so he may have found the problem. That is the reason for my inquiry.