They work great in areas where the oil drains down on other parts... we used them all the time when I serviced mixer trucks, and a lot of farm equip uses them too. We didn't have to replace too many after initial install. They are def more user friendly as far as not needing tools, and not getting a sleeve full of oil every time you pull the plug.
So If you don't mind getting a little oily, I wouldn't say it is worth the money... but they are much cleaner and easier.
Best of luck!
Kent Siebern
Angola, IN