Electric Comet wrote:
On Mon, 13 Feb 2017 19:31:42 -0600 Doug wrote:

Need to fill a split in an exterior board - what brand(s) of wood
filler perform well in this application after priming and painting?
wonder why it split

how big a split is it


After reading the rest of the thread, you're "coming to the party" now?
Doug already answered this question (at least he gave dimensions).