mystery leak

[vandy0090]

so ive had this h2 for about 2 years now and ive had a mystery leak on her for about a year and a half. its coolant drippin off the scrape plate. its not there all the time.. mostly in the mornings. maybe 3 days a week there will be a little wet spot under it. ive looked sevral times for it but like i said it comes and goes. any thoughts on where to start looking. from what i can tell all my hoses are good and have no tranny leaks..