This article was updated March 6, 2023. It was originally published Aug. 1, 2001. Gears—even plastic ones—need to be lubricated if engineers are going to coax the best performance out of them. In the ...

Grease is critical for keeping your rigs safe. But if you aren’t an expert, using grease correctly can be like trying to solve a mystery. While conventional wisdom may suggest one thing, the truth may ...