Hey.
Number 4 spark plug is rusting. I need a stainless steel equivalent for a Champion RV9YC. Can't find any cross reference online. Local shop was no help.
Salt spray drips down from the hinge area of the dog house onto the engine in that area. After each outing, I rinse with fresh water. When that dries, I spray with Quicksilver Anti-Corrosion Spray, but the plug is still rusting.
Is there a cross reference from the Champion plug I mentioned to the AC Delco marine plug?