Originally Posted by Duragrouch

So, I lube with 75W-90 gear lube, which seems to have the viscosity of a much lower viscosity motor oil. A drop of oil at each roller is enough lube, I don't need to add more, that is durable. After about 500 miles, I see the consistency of paste and that indicates to me that it is time for an on-bike solvent cleaning, and reoiling. Until I see the paste, it's plenty wet with lube. The lube doesn't deplete, it just turns into a colloid(?) with all the metal particles, which is then "lapping paste", and I promptly remove and relube.