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I mentioned it before but the paint discussion has resurfaced again. My
IV-P was done by a third party who is in the business of painting
airplanes. The material was PPG. After a major fuel leak at the fuel
probe we discovered that the blue dye in 100LL had gone all the way to
the base coat and even abrasive compounds will not remove the stain. It
was a major pain to resand down to the clear and even into the primer
and reapply a base coat. This time I got an expert opinion from a friend
that worked at Sherwin Williams. I was told that the mixture for the
hardener and other solvants used in the PPG paints was responsible for
it. It was a mess. The base coat apparently does not dry completely and
remains soluble (for ever?). My new clear coat (as applied to the areas
that were repaired) is now fuel dye tolerant.
Andres

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Please send your photos and drawings to marvkaye@olsusa.com.