First...I ran out of time and did not varnish my car last weekend. 

Just want to mention...

 I intend to do some spray varnishing and bought a quart of Interlux's Special Thinner.  On looking at the recipe for this stuff only one ingredient is listed.  Xylene.  Maybe I should have gone to the local big box and picked up a gallon of Xylene, which costs the same as a qt. of the special sauce. 

Kim