I've used this product for over 8 yrs now with out any problems. However I have always used a sealer before topcoat. I'.m about to shoot PPG Deltron, 3 to 4 coats in Ford Indian Fire Red, which has a little silver/aluminum in it. Clear will be 4 coats PPG Concepts 2021. My question is has anyone used All U Need without sealing before topcoat?

Thanks