Allow me to introduce you to the 'search' feature of the board.
Go to the top of this page, click on 'search', and when the next screen comes up, type xylene, or toulene, and many, many threads will come up. There have been 3 posts on this in the last couple of days, but read all the threads, there is a lot of information you can use.
For every 2 gallons of 93-94, add one gallon of xylene. For each gallon of xylene added, add 1 ounce of Marvel Mystery Oil. It's needed for pump lubrication, as well as top engine lubricant. Pre mix the lubricant with the xylene.