Swamp..i don't have any new Colemans but i did get a new pump in a bubble pack on sale at my local outdoor shop and i was sort of put off to see the pump leather was a plastic/rubber thing.
olive oil is big across the pond for pump leathers and i have used peanut oil,3-in-one,a bit off the cars dip stick.thats why leather is best,a bit of something greasy and it comes back to life..don't know about easy-light..all my stuff is old.
all i can say about propane is --don't leave the empty tanks laying around the woods!!!!!--