
Scooter gear oil does not require as frequent changes as engine oil. Under normal usage, the initial change should be performed after the 1000km break-in period, and subsequently, it can be replaced once every year. Below is more information about gear oil: 1. Introduction: Gear oil primarily refers to the lubricating oil used in transmissions and rear axles. It differs from engine oil in terms of usage conditions, composition, and performance characteristics; its main functions include lubricating gears and bearings, preventing wear and corrosion, and assisting in heat dissipation for gears. 2. Application: Automotive gear oil is used in gear transmission mechanisms such as steering gears, transmissions, and drive axles. Due to the high surface pressure during gear transmission, gear oil plays a crucial role in lubricating gears, resisting wear, cooling, heat dissipation, preventing corrosion and rust, cleaning, and reducing gear surface impact and noise.

I've been riding a scooter for almost ten years, and gear oil is something you can't be careless about. Normally, changing it every 5,000 kilometers or once a year is the most reliable, but it also depends on how you usually use your bike. If you frequently climb hills with a passenger, putting more load on the rear wheel gearbox, you should change it every 3,000 kilometers. I remember last time I got lazy and went over by more than 1,000 kilometers, and when accelerating, the rear wheel started making a clattering noise. When I opened it up, the oil had turned ink-black, full of metal shavings. Now I always keep some 75W90 gear oil on hand—it's simple and cost-effective to change it myself.

Gear oil changes depend on usage scenarios. For urban commuting, changing every 6,000 kilometers is generally fine, but if you frequently drive long distances or on dusty roads, it's better to change at 4,000 kilometers. Last time I helped a friend inspect a car that hadn't had its oil changed in five years, the gearbox had a thick layer of sludge, and the ball bearings were worn with grooves. Personally, I check it every two seasons: use a socket to loosen the drain plug—if the oil that comes out is black with metallic sheen, change it immediately; otherwise, it can still be used for a while. Don't wait until the gears are worn to take action—repair costs could cover a decade's worth of oil changes.

As a rider who commutes 30 kilometers daily, I adhere to changing the gear oil every 3,000 kilometers. The rear wheel hub of scooters has limited space, and prolonged operation can raise oil temperatures to 80°C, causing ordinary mineral oil to oxidize within six months. Changing the oil is simple: after warming up the scooter, lift it on the main stand, first loosen the 17mm drain bolt at the bottom, wait for the oil to drain completely, then tighten it. Pour 120ml of new oil through the filler hole until it overflows. Fully synthetic gear oil is the best choice due to its superior shear resistance, making it particularly suitable for scooters frequently ridden on mountain roads.


