Silicone grease is fine on hoses, connectors, as long as you don't slobber it all over the place. It has high thermal resistence and will not degrade the rubber (neoprene). Silicone sprays should not get inside the engine, but why would anyone use it in that fashion anyway. Silicone is a fairly inert substance and if you use it properly, you will be fine. I use it for all kinds of lube issues. Really great with suspension bushings which are squeaky.
2000 Dodge Grand Caravan SE
No matter what you fix, there will always be something else to fix..
"Warranty" is just another way of postponing the inevitable.