A few folks here have alerted me of a post at another forum where oil on coticules is being debated. The question there is whether anyone has tested the stone for oil absorption.
Now I am not a geologist, don't play one on tv and did not stay at a Holiday Inn Express last night. I'm just a guy with stones that likes to rub metal on them and shave with that metal.
If you look at old vintage coticule boxes they recommend the use of oil or water.
My stone has seen oil at least 30 times and it's more like 40-50. I don't see a change in the look or feel of the stone.
Here is the stone dry
As you can see there is no beading up of the water.
Ok how about slurry you ask.
Again no change in feel of the stone