Outdoor Power Equipment (Lawn Mowers, Snow Blowers, Chain Saws and more) Discussions

So we just got our first appreciable snowfall and the Ariens 11528 made short work of it.   But last night as the snow was falling I went over the machine to make sure everything was ready to go.  I learned the hard was to always have extra belts, shear pins, springs, spark plugs, etc on hand...so I was prepared for anything it needed.  Went over my service log and saw that it was coming up on 25 hours since I greased the axle.  Removed the shear pins, grabbed the grease gun, locked onto a fitting and gave it a few squeezes before it hit me that I might not be using the right grease...so I stopped.

Here's the question.  I was using John Deere Multi-Purpose SD Polyurea grease.  It has an operating range -15 F to 350 F.  Checked the Ariens Manual and it called for Stens Mix Hi-Temp Grease, or equivalent.  How do you know if a particular grease is equivalent to Stens Mix Hi-Temp?   Does it even matter or is grease grease?