Okay so i cleaned it all off yesterday filled the resivor to specs. Pop the hood today and the splatters are there again!!! Idk what it is it drives fine temperature guage is normal. Any ideas thanks.

 

Leave the reserivor empty and I'll bet you it will never come back. The heat that back flow into might be causing it to bubble up and spill just my thought. I never filled mine and neither has my dealer when I use to bring it in. 4yrs going and no issue with it. Same goes with the wife 250 6yrs and no crust on the reservoir or issues at 105k since new. If anything keep it on the low end of the level.