That its impossible to find an oil can with a zerk fitting. I need one for my bridgeport that uses zerks for oil and not grease.

I gave up on that years ago. You can find guns that work but they're rare and crazy expensive. You can make an oil gun from a grease gun that works but that bitch will oil the machine and you and the floor and the wall.

I just swapped the fittings to get rid of the zerk nipples for something I could use with a standard oil fitting.

For machine tools I just use an oil can with a finer than normal tapered tip, this will depress the ball bearing in zerk / grease nipple fittings no problems, this also works with the ball oilers typically found on lathes etc. You can cut a tiny slit in the end too if that helps get oil in https://www.wentztech.com/metalworking/projects/convert-a-ch...