I was given a couple gallons of way oil a while back which I use on my lathe and bridgeport. My bridgeport is retrofitted to cnc and I am finding the way oil is very heavy and creates a lot of sticktion. The mill has a one shot oiler which I use very frequently when running. Its also way too heavy for my surface grinder compared and made it hard to crank compared to the straight 30w non-det motor oil it had been using since I got it.
What would be good to use to thin the way oil out? I also got a couple gals of lightweight spindle oil from the same guy.