What viscosity is Harley Davidson transmission oil?
The oil viscosity is measured in centistokes (cST) at 100°C. Note that different scales are used to measure the viscosity of motor oils and gear oils. That’s why the 20W-50 motorcycle oil’s viscosity is so close to that of the the SAE 110 transmission fluid.
What kind of oil goes in a Harley Davidson transmission?
AMSOIL Offers Superior Protection And Performance
| AMSOIL Recommendations for Harley-Davidson Motorcycles | ||
|---|---|---|
| Flathead | Best | Secondary |
| Transmission | 20W-50 | MVT Synthetic V-Twin Transmission Fluid |
| Primary Chain Case | 20W-50 | MVP Synthetic V-Twin Primary Fluid |
| Ironhead – Evolution Sportsters / V-Rods | Best | Secondary |
What is the best oil to use in a Harley Davidson 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).
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 motor oil.
What kind of oil goes in Harley primary?
You actually have a couple of choices for the primary drive. 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.
What kind of oil goes in a Harley primary?
How much oil goes in a Harley primary?
Fill the primary with oil Harley Davidson Softails require one quart of primary fluid.
How often should you change 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 kind of oil do you use in a Harley Davidson?
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.
Can 75W-140 gear oil be used in Harley-Davidson transmission?
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. But, do consider that 75W-140 is much thicker than oils typically used in Harley transmissions.
Which is better transmission fluid or motorcycle oil?
Synthetic V-Twin Transmission Fluid has a higher viscosity than 20W-50 Synthetic V-Twin Motorcycle Oil. A higher-viscosity, or “thicker,” lubricant provides some advantage in helping quiet noisy transmission gears and enabling smooth shifts.
What kind of oil do you use for transmission?
AMSOIL has secondary recommendations of AMSOIL Severe Gear 75W-110 for the transmission and Severe Gear 75W-140 for the primary, but the company themselves will tell you that there is absolutely no upside to using gear oil in these components rather than the 20W-50. Some may think that they are using a thicker oil by using a gear lube.