You would be hard-pressed to find any real difference in performance. It's more of weight savings vs battery use time. If you do a single piece of equipment the M12 is perfect. If you do more than about 2 or 3 tractor-trailers you will want either the larger XC6 or 4 battery or use the M18 version.
Can you make a video showing you greasing the fifth wheel
Would you change it for the M-18? Or the M-12 is enough for the truck?
The battery pack is different for m-18 I believe. The m-12 was cheap and fit my other drill and torque gun. So far this little m-12 has been a beast.
You would be hard-pressed to find any real difference in performance. It's more of weight savings vs battery use time. If you do a single piece of equipment the M12 is perfect. If you do more than about 2 or 3 tractor-trailers you will want either the larger XC6 or 4 battery or use the M18 version.
2 year update - zero issues. Works fantastic. Little dirty now but still works like new 🎉
Is the barrel the same as a manual grease gun?
Yes