it could be glue seeping through the veneer, if the door is reasonably
new I sugest you contact the company and complain directly, it's possible
they might replace the door. I can't suggest a way of hiding the stains.
Hi Dave, as Stoneyboy said, old engine used to be used on fences,
I've used it myself, it's a good way to get rid of the old oil, but keep covered up, it can be messy. Have fun!!.
