

We submit that ATF is too thin for Harley primary use. Similarly, SAE 60 H-D is suggested for higher temperatures above 80 degrees. But if you live in a region where it gets below 40F, you should get something that maintains SAE 10W40 standards. What is the best oil to use in a Harley Davidson?Īns: For all weather conditions, Harley Davidson recommends SAE 20W50 synthetic oils the Twin Cam engine. Harley Davidson Softails require one quart of primary fluid. A transmission oil change should happen every year. Primary oil should change at 10,000 miles, and trans fluid at 20,000 miles. How often should I change the tranny oil in my Harley? According to the manufacturer’s service manual, you should change the engine oil at 5,000 miles. How often should I change the transmission oil in my Harley? S0 you should use synthetic lubricants in your motorbike. If you use conventional oil, it will break down when the engine is hot as it will not cool the engine or offer lubrication when it’s hot. Should I run synthetic oil in my Harley?Ī Harley contains a 4 cycle engine that produces a lot of power as it generates a lot of heat, plus it’s air-cooled. The optimum product would be Mobil 1 Racing™ 4T 10W-40 motorcycle oil, but it is also okay to use Mobil 1™ V-Twin 20W-50. You actually have a couple of choices for the primary drive.

What kind of oil goes in a Harley primary? What weight oil do I use in my Harley transmission? – Related Questions Can I use 20W50 in my Harley transmission?Ī particularly nice feature about AMSOIL 20W-50 Synthetic Motorcycle Oil is that it can be used in the engine, transmission and primary chaincase of Harley-Davidson motorcycles. I would recommend using gear oil in there over motor oil. What oil goes in a Harley transmission? For the record, AMSOIL recommends AMSOIL 20W-50 Synthetic V-Twin Motorcycle Oil in the engine, transmission and primary chaincase on most Harleys (consult our Motorcycle Product Guide for specific recommendations).Ĭan I use 75w90 in my Harley transmission? It’s a synthetic gear oil.
