On 14 Jun 2005 04:57:14 -0700, wrote:

Interesting. Linseed oil paints are reckoned to have the longest
recoating times of all wood paints, at 15 years. Maybe the density of
pigment makes the yellowing not such an issue, and boiled is used?

Paints are pigmented - this stops UV action on most of the layer and is
the main reason why paint lasts better outdoors than varnish.

You can make perfectly usable linseed oil external finishing oils or
varnish/oil mixtures, but you can't make them clear and light in
colour.,