I'm not an expert but willing to learn... I (personally) just use EP Molly for everything. I do not recommend following in my foot steps. I've done my Trailer axle (highway speeds, 18 years), Finishing mower spindles (17 years), also for the loader and under belly zerks. No failures on anything but I do grease the snot out of everything.
If you don't grease, is where you will have problems... keep everything lubed up. Again about as far from an expert as I can be, just an old tired dude that uses way too much grease....
Stepping up on my soapbox; 10 hour lube for FEL is not just when you use it. Just driving down your driveway, your FEL is bouncing around and needs to be lubed every 10 hours on the clock. Stepping down, now....