Epoxy / Heat / Antifreeze

[RenewAP]

I have an older delivery van, and the lower metal coolant tube has rusted and is leaking. I bought a new replacement one that comes with the same coating as the original, which doesn't last long before rusting. I am going to sandblast off the factory coating and give it 3 coats of epoxy primer. My question is whether or not I should prime the area where the rubber hose clamps, or leave it bare metal. I remember an issue I had years ago with the heat and antifreeze softening the paint i had put on a fitting I made, which allowed the hose to slip off under pressure. My homemade tube at that time did not have a bead rolled into it though, which would have stopped it from popping off.

 

[MJM]

If you have three months to let that epoxy fully cure before covering it with a rubber hose clamp, then I would do that. If not, don't paint it if your hose is going to slip off under pressure.

If it bothers you to have exposed metal at the rubber hose clamp, high heat rattle can would work for me.