@Fowler4f says that the white grease is not for model railway locos, here:
However, @Robert Shrives says here that white grease is for reducing gear noise:
Can you email R&R and ask?
According to their website:
White Grease:
"A tube of grease for model train servicing, ideal for improving slow or noisy models, a small amount can be applied to bearings, gears and drive shafts to maintain smooth running of the loco. It’s safe for plastic and metal gears and won’t dry out either."
Grease:
"A tube of grease for model train servicing, ideal for improving slow or noisy models, a small amount can be applied to bearings, gears and drive shafts to maintain smooth running of the loco. It’s safe for plastic and metal gears and won’t dry out either."