modeltrainsparts posted:I have been using Bosch purple grease for over 20 years now. It has great longevity; i only have to grease my engines every 15 - 20 years. It was developed for greasing the gears on Bosch power tools (impact hammers, etc), but is known to have been used on the tail rotor bearings on Ranger helicopters. Good stuff.
Is this the product you use?