set in cement dust

[centrysis]

A little update. I never thought to ask the cement kiln that our company ships fuel to. I completely forgot, until they called me to schedule trucks. The lady said she has to clean this dust off her car once a week or every other week. She said she uses undiluted white vinegar. She's been doing this for years she said. Just spray it on and let it set a few minutes. I'll never doubt you again CTScott.