Thanks Bill, I appreciate the explanation. I can understand the contamination being an issue, but I figured a few drops that was diluted when the fluid enters the system, and was probably removed when bleeding the system really wouldnt be enough to cause damage.
Ive used wd-40 for as long as I can remember for rehoning wheel and master cylinders and havent had any issues yet and its a petroleum based product, so long as the cylinders werent pitted or damaged Ive had no issues. Thanks again for explaining!
Jeff