Which oil do I use in a Harley-Davidson transmission?
Changing your gearbox oil regularly is essential to keep your vehicle running properly. Thanks to the brand’s reputation, all Harley transmissions are insured with high quality oil. When choosing an oil, you should be aware that the correct gear oil should not be affected by the heat generated by the transmission system, and of course, the Harley maintenance instructions should be followed when changing the oil. I use synthetic oil, it prevents wear on the gear, chain, and bearings. It also helps with acoustic removal and smooth transitions.