Originally Posted by Brushjockey
Someone- I think Cabots- has a greying solution. Been a long time since I used it.
Indeed it does and I posted about last week or so. I will see if I can find it again and post an image of the can. It is called Bleaching Stain or Bleaching Oil and greys wood (cannot remember). It also has a minor amount of grey pigment in it. I used to use it on redwood fencing in N California when clients wanted an accelerated look or to blend in for sprinkler overspray damage before applying a semi-transparent stain.
Found it. It looks like it runs $43/gallon retail. You can probably look online for a formula to make your own cheaper?