The Jalopy Journal
My car roof is rusted badly for years, not new metal. The metal color turns black.
Yes, never rinse with water on badly rusted metal instead of I use my car as the lab for the product I did not make. :p
Ospho tech advice gave same answer and I got flash rust quickly after washing the 2nd coat then air drying yesterday :(. Maybe the roof was heavy...
Yes, this morning my car got flash rust after 20 minutes rinsing the second coating with water by following their tech advice!!! Better with...
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The Jalopy Journal