What Weight Oil Do I Use In My Harley Transmission?

by | Last updated on January 24, 2024

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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.

What kind of oil goes in a Harley-Davidson transmission?

Is there any problem with this? Our answer: It is perfectly acceptable to use

75W-140 gear oil

in Harley-Davidson transmissions. But, do consider that 75W-140 is much thicker than oils typically used in Harley transmissions. For instance, AMSOIL V-Twin Synthetic Transmission Oil is an SAE 110 gear oil.

Can I use 20W50 in my Harley transmission?

A 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.

Can I use 75w90 in my Harley transmission?

It's a

synthetic gear oil

. It will be just fine in the trans. I would recommend using gear oil in there over .

What is the viscosity of Amsoil V-twin transmission fluid?

Specifications AMSOIL V-Twin Synthetic Transmission Oil (MVT) Viscosity

SAE 110
Kinematic Viscosity @ 100°C, cSt (ASTM D-445) 20.7 Kinematic Viscosity @ 40°C, cSt (ASTM D-445) 190.3

What kind of 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.

How much oil goes in a Harley primary?

Fill the primary with oil

Harley Davidson Softails require

one quart

of primary fluid.

Can I put 20W50 in my motorcycle?

the 20w50 is perfect for summer riding because it protects a bit better in the high temps. as long as its

motorcycle specific you can pretty much run any weight oil

.

Can you use ATF in Harley primary?

We submit that

ATF is too thin for Harley primary use

. It's true that many Harley riders have had years of problem-free performance with ATF. We contend that a thicker oil will provide superior metal-to-metal wear protection. Chains and sprockets will last longer using a fluid with an appropriate viscosity.

What viscosity is Harley primary oil?

The

20W-50

motorcycle oil's viscosity is right in the “sweet spot” for optimum operation in all three holes and the volumes of positive reviews we receive back this up. Gear lubes do contain heavy doses of “extreme pressure” additives which many believe prevent transmission wear and provide quieter operation.

How often should I change the transmission oil in my Harley?

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. Primary oil should change at 10,000 miles, and trans fluid at 20,000 miles. A transmission oil change should happen

every year

.

How often should I change the primary oil in my Harley?

Oil changes as per Owners manual every 5k Miles, Tranny and Primary

every 10K

. If you ride it more you'll be changing it more often.

What is Harley formula plus?

Developed with a proprietary mineral basestock formula and TESTED-CERTIFIED by Harley-Davidson

®

Motor Company, Formula+ is

blended to provide lubricity

for the anti-wear requirements of transmission gears.

What is a 3 hole oil change?

What is a 3-Hole Oil Change? A 3-hole oil change is

when you replace the oil in all 3 essential components of the powertrain

: Engine. Transmission. Primary.

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.

David Evans
Author
David Evans
David is a seasoned automotive enthusiast. He is a graduate of Mechanical Engineering and has a passion for all things related to cars and vehicles. With his extensive knowledge of cars and other vehicles, David is an authority in the industry.