I have a suggestion about using a mixture of vinegar and linseed oil
to clean finishes.  Don't do it!

First, this solution won't do a very good job of cleaning off oil base
dirt.  Second, linseed oil (especially raw linseed oil) has a nasty
habit of never really drying and then becoming sticky (and smelly)
under certain circumstances.

I use the following solution.  By the way, you should consider each
situation and then judged how it will effect the item being cleaned.

Use equal parts of white vinegar, paint thinner, and tung oil.

The white vinegar will loosen water soluble dirt with less smell
than apple vinegar.  The paint thinner will loosen oil based dirt.
Turpentine is stronger but smells bad and leaves a residue that is
hard to remove.

The tung oil will harden in any areas where the surface film of the
original finish is broken and thus protect the wood.  It doesn't leave
a smell like linseed oil does and it won't get sticky.

I actually use teak oil, which is faster to dry.  (Remember going to
a new 'antique shop and smelling all the newly refinished furniture?
That's linseed oil.)  I put the ingredients into a covered container
and shake it up before pouring a little on a clean cloth.  Use a
toothbrush to get into detailed areas and then rub dry with another
cloth.

Craig Smith