You could try a flexible epoxy or something like a cloth/heavy-duty repair tape: http://www.gorillatough.com/gorilla-clear-repair or https://www.mcnett.com/gearaid/tenacious-tape#10691


Find a pressure wand that attaches to a garden hose (would be nice if it has a soap attachment). Even if the water pressure isn't as high as a pressure washer, it will be better than nothing. You can put the car on jack stands to give you more room to work, if needed. Spray soapy water on the underside and let it sit for a couple minutes, then rinse. I ...


Use "rubbing alcohol," aka isopropyl alcohol. Get it from the drugstore or the pharmacy.

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