Hi all: About a year ago I replaced upper and lower radiator hoses as well as switched to Phosphate-free antifreeze. At almost all cooling fluid hose junctions I am getting the white crusty buildup. All my clamps are tight and centered but the seepage persists. What is the concensus on using RTV sealant on the flanges/connectors? Thanks, Mark Pollan, '86 5KCSTQ 231K MIles