Here is a quote directly off the Goodyear Tire website:
"A non-water base commercial bead
lubricant should be used since water in
the tire can cause excessive rim corrosion
problems. However, thin vegetable oil
soap solutions with a water base are
approved. Lubricants which contain a
rust inhibitor can be an advantage. Avoid
the use of excessive lubricant Figure 3.1.
Never use anti-freeze, silicones,
or petroleum based lubricants."
I would take the tire off, clean the tire and rim and do it again.