Hey Scotty, I have a RAM 1500 with the 3.6L Pentastar. It developed a random coolant leak about a year ago, somewhere around the water pump. Had it pressure tested by the dealer but they couldn't make it leak. I can't reproduce it on demand either - it's only happened 5 times in the last year. It has been occurring on random startups, but I noticed last week it leaked again without ever starting the engine when the weather changed from warm to cold overnight. Any ideas? Thanks!