How to Choose the Right Grease for a Grease Gun?

There are many kinds of grease.
Depending on the usage or area, lithium grease, synthetic grease, food-grade grease, etc. are all perfect for priming.
Distinguished by the NLGI consistency number, it has 9 grades from grade 000, 00, 0,1 to grade 6. When the grade is higher, the grease is thicker.
Basically, users can use different grease for different purposes.
However, if speaking of the viscosity part, NLGI GRADE 1-2 is generally recommended. In that way, the grease is perfect for priming, not too hard to prime but not to watery.