DeLaSoul to the rescue!! Thanks Dave for coming over and swapping your good sunroof for mine and helping me fit it. Surprisingly easy and quick to do, now I've got no worries with a leaky seal. Top man!!
Never used any coolent when I had it! I would start by looking at hoses and rad.( rovers prone for head gaskets) or maybe just due to the really hot weather maybe a full coolent change might help