Tacky Red grease with a 70 lb Timkin rating would do better than just plain chassis grease. Usually the industrial grease does well due to the hammering load of the gearbox pushing against the blades. Chevron, shell, schaffers they all have a good product that is not real expensive.
I used shell alvania and a few others with good results. Now days, I use Amsoil grease and their GLC is excellent, or the Truck grease.
ASE Certified in Med/Heavy Truck Service including A9
Heavy Equipment Repair, Fleet Maintenance
Real Cars Rattle and Smoke a Little