- Best Overall: AMSOIL FULL SYNTHETIC Motorcycle Oil 20W-50.
- Runner-Up: Mobil 1 96936 20W-50 V-Twin Synthetic Motorcycle Motor Oil.
- Best Budget: Castrol 06116 POWER1 V-TWIN 4T 20W-50.
 How often should I change synthetic oil in my Harley?
 
 Motorcycles needing semi-synthetic motor oil can usually last between 5,000-8,000 miles before needing to change the oil. Finally, motorcycle engines running off fully synthetic motor oil will be able to last
 
 between 7,000-10,000 miles
 
 before needing to change the oil.
 Who makes Harley synthetic oil?
 
 Harley-Davidson oil is manufactured by
 
 Sunoco
 
 .
 How is V-twin oil different?
 
 Synthetic V-Twin Transmission Fluid has a higher
 
 viscosity
 
 than 20W-50 Synthetic V-Twin Motorcycle Oil. A higher-viscosity, or “thicker,” lubricant can help quiet noisy transmission gears and enable smooth shifts.
 What oil goes in a Harley primary?
 
 You actually have a couple of choices for the primary drive. The optimum product would be
 
 Mobil 1 RacingTM 4T 10W-40 motorcycle oil
 
 , but it is also okay to use Mobil 1TM V-Twin 20W-50.
 Should I run synthetic oil in my Harley?
 
 Ans: For all weather conditions, Harley Davidson recommends
 
 SAE 20W50 synthetic oils
 
 the Twin Cam engine. But if you live in a region where it gets below 40F, you should get something that maintains SAE 10W40 standards. Similarly, SAE 60 H-D is suggested for higher temperatures above 80 degrees.
 Is AMSOIL better than Mobil 1?
 
AMSOIL vs Mobil 1: The results
 AMSOIL synthetic motor oil withstands extreme heat and shearing forces, exceeding industry standards and outperforming competing brands. In fact, it
 
 fights viscosity breakdown 46 percent better than Mobil 1
 
 .
 Can I use Mobil 1 in my Harley?
 
 Applications. Mobil 1 V
 
 -Twin 20W-50
 
 is specifically recommended by ExxonMobil for lubrication of four-stroke motorcycle engines in high performance motorcycles. Recommended by ExxonMobil for use in Harley-Davidson.
 Is Harley SYN3 full synthetic?
 
 Harley-Davidson® Screamin’ Eagle® SYN3®
 
 Full Synthetic Motorcycle Lubricant
 
 . … This formula is approved by Harley-Davidson for use in all staged of engine life and is not detrimental to the break-in stage of engines.
 When should I use 20W50 oil?
 
 What is 20W 50 oil used for? 20W50 is used
 
 when the manufacturer specifies it
 
 . It is also used for vehicles that are designed for higher temperatures and/or used in warm weather (like a summer car) during the winter season.
 Why is zinc added to motor oil?
 
 What is motor oil with zinc? … Its primary role is
 
 to prevent metal-to-metal contact between engine parts by forming a protective film
 
 . Despite being referred to as zinc, ZDDP also contains phosphorus, which helps to perform the anti-wear function in the motor oil.
 What is the best 20W 50 motor oil?
 
- Morris Lubricants. …
- Lucas Oil. …
- Lucas Oil. …
- Comma. …
- Fuchs. …
- MANNOL. 4x 1L Motorcycle Oil Mannol V-Twin Engine Oil 20W-50 HARLEY DAVIDSON BUELL etc. …
- VALVOLINE. Valvoline DuraBlend 4T Motorcycle Oil SAE 20W-50 1 Litre. …
- Castrol. Castrol 15049B Synthetic Power 1 4T SAE 20W-50 Engine Oil, 4L.
 How much oil goes in a Harley primary?
 
Fill the primary with oil
 Harley Davidson Softails require
 
 one quart
 
 of primary fluid.
 Can you use synthetic oil in Harley primary?
 
 Answer: For any Harley Twin-Cam engine, we highly recommend using
 
 AMSOIL Synthetic 20W-50
 
 in “all three holes” (as they put it) for two essential reasons. … These are called AMSOIL V-Twin Primary Oil and AMSOIL V-Twin Transmission Oil.
 What kind of oil do you put in a Harley-Davidson transmission?
 
 
 Heavy Synthetic Gear Oil
 
 . TESTED-CERTIFIED for use in Harley-Davidson transmission and primary chaincase applications.
 Is synthetic oil good for Air-Cooled Engines?
 
 Since
 
 synthetic
 
 oil has better heat transfer qualities than dino oil, your internal engine temperatures will be lower. … The wider range of temperatures that synthetic oil can withstand is well suited for the air-cooled VW engine.
 
 