Not a free hub an old school freewheel. They call for medium weight oil. But what does that mean?
SAE20 ?
Gear OIL
75W90 ?
75W140 ?
85W140 ?
Currently running the heaviest 85W140 and t seems fine only drawback seems to be that it's way more silent than all the other bikes so people don't hear me coming the gear oil dampens all noise. Haven't really had the pawls slip and it seems to still not get stuck in winter -20C which is a relief but I never did figure out what they mean by medium weight oil.
SAE20 non detergent oil didn't seem to work that well I could hear some level of metal scraping noises and overall it was a bit loud vs the 85W140 that took all the noise away as soon as the freewheel was flooded with it.
85W140 seems to last around 2 years without needing a top off eventually you'll know you need a top off as the ticking noise becomes louder.
SAE20 ?
Gear OIL
75W90 ?
75W140 ?
85W140 ?
Currently running the heaviest 85W140 and t seems fine only drawback seems to be that it's way more silent than all the other bikes so people don't hear me coming the gear oil dampens all noise. Haven't really had the pawls slip and it seems to still not get stuck in winter -20C which is a relief but I never did figure out what they mean by medium weight oil.
SAE20 non detergent oil didn't seem to work that well I could hear some level of metal scraping noises and overall it was a bit loud vs the 85W140 that took all the noise away as soon as the freewheel was flooded with it.
85W140 seems to last around 2 years without needing a top off eventually you'll know you need a top off as the ticking noise becomes louder.