Our answer: It is perfectly acceptable to use 75W-140 gear oil in Harley-Davidson transmissions.
What is the best oil to put in a Harley Davidson transmission?
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. Update: AMSOIL now offers dedicated fluid for Harley Davidson primary chain-cases and transmissions.
Can you use ATF in Harley transmission?
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.
Which grade oil is used in transmission?
For example, most modern gearboxes require a GL-4 oil, and separate differentials (where fitted) require a GL-5 oil. While they take the same form, the viscosity grades for gear oils are on a different scale than the viscosity grades for an engine oil. The viscometrics for gear oils are standardized in SAE J306.What oil does Harley Davidson recommend?
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.
How often should I change the transmission 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 color is motorcycle transmission fluid?
A bright and deeper red color is normal, while a brown or burnt color are good indicators that you need to arrange a transmission fluid change or flush.
What is the meaning of 80w90?
80W-90. The numbers “80W-90” refer to the viscosity grades of the oil. Since it has two numbers, this oil has two viscosity grades. The ‘W’ means winter. The number “80” — in this case — signifies that the oil is designed to work well in lower temperatures.Can you use gear oil in Harley primary?
Or be notified when back in stock. TESTED-CERTIFIED for use in Harley-Davidson transmission and primary chaincase applications.
What is 80w90 gear oil used for?80W-90. The 80W-90 gear oil can be used in extreme pressure conditions and as a lubricant for non-synchronized manual transmissions in heavy duty trucks or buses. This gear oil is recommended for conventional and limited slip differentials.
Article first time published onWhat is the difference between gear oil and transmission oil?
The simplest answer to the difference between transmission fluid and gear oil is in the purpose for which they are designed. Transmission fluid is engineered to work with automatic transmissions, whereas gear oil is typically intended to work with manual-type gear boxes.
What kind of fluid goes in a 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.
Can you put an automatic transmission on a Harley?
While most bikers want a manual transmission in their Harley Davidson motorcycles, some people want or need an automatic transmission while still wanting Harley’s power and style. … That’s right, yes, Harley Davidson has motorcycles with an automatic transmission.
When should I use 20W50 oil?
20W50 motor oil is suitable for warmer climates, where the higher temperature causes the oil to thin. It is also useful for vehicles subject to hot temperatures and for those used for high-stress activities such as hauling or pulling trailers.
Is synthetic oil better for my Harley?
Synthetic oil is preferable to mineral oil primarily because it has a higher heat tolerance. That is very important in air-cooled engines like the one in your Harley.
What makes transmission fluid red?
The red color for transmission fluid boils down to the applied dye at the point of manufacture. The reason is unknown but serves as a clue separating the fluid type from engine oil, radiator oil, washer fluid, and coolant. Transmission fluid usually has a translucent red color.
Should I change my transmission fluid if it's brown?
If your transmission fluid is dark brown or black, it needs to be flushed and changed right away. … Oxidation is bad for transmission fluid. Dark brown or black transmission fluid is dirty and incapable of lubricating the hundreds of transmission parts. It will cause damage if you don’t have it changed.
Is transmission fluid thick or thin?
Your transmission fluid shouldn’t be too thick or sluggish. It should be pretty thin and less viscous than motor oil meaning thinner than motor oil. It is normal for the transmission fluid to get a little thicker over time through use.
How much transmission fluid do I need?
Make sure that the fluid level is within the safe zone. It should be between the two marks in a warm engine. In general, transmissions take about 9 to 13 quarts to fill completely. The amount of transmission you add will vary, depending on whether you are draining or replacing it all or you are just topping it up.
What 3 oils do you change on a Harley?
V-TWIN OIL CHANGE KITS are designed to ease the oil change process in your H-D® motorcycle. Each kit comes with all necessary products to complete a full oil change including engine oil, transmission oil, primary oil, drain plug o-rings and a ProFilter Wrench Removal Premium oil filter.
How much oil goes in a Harley primary?
I am aware that it takes three quarts of oil. The primary is only supposed to be filled up to the BOTTOM of the clutch spring. Start with one QT and add little by little until the level reaches the bottom of the shiny ring at the bottom of the clutch pack housing.
Which is better 75w90 or 80W90?
Ans: 75W90 is artificial and mostly better than 80W90, but it costs more. 75W90 has a better low-temperature viscosity and is good to run all over. If you’re in a warmer zone, using 75w90 will be more suitable than 80w90 for you.
What is hypoid gear oil used for?
A hypoid gear oil is a lubricant that is designed to operate effectively with hypoid gear designs. Most gearboxes and differentials use hypoid gear designs and the lubricant must contain EP (extreme pressure) additives to prevent wear between the sliding surfaces of a hypoid gear mesh.
What's the difference between gear oil and hypoid gear oil?
The term “hypoid” has more to do with the construction of engine gears than it does with oil. … Due to the higher pressure on gears as a result, the lubrication needed has to include ingredients to provide more protection for the gears. This special gear oil is designed not to deconstruct under higher pressure.
Can I put gear oil in my automatic transmission?
Whilst some manual gearboxes do use transmission fluids in place of gear oil, the same cannot be said for putting gear oil into an automatic transmission. Gear oil is much too viscous for these systems and will cause clogging between components.
Which is thicker 75w90 or 80w90?
SAE 75W-90 maintains a more consistent thickness, or viscosity, across a wide temperature range. It’s thicker when exposed to high heat and thinner under colder, wintry conditions than 80W-90.
What is the difference between gear oil and differential oil?
Differential oil, which is also known as gear oil, is thicker compared to engine oil. … The heavy-duty automobile fluid works under high pressure to ensure that all the gears, clutch packs, and bearings are continuously oiled, keeping all the differentials working smoothly and safely.
Can I use motor oil for transmission fluid?
Yes, you can use motor oil instead of automatic transmission fluid. However you can’t do it if you expect the transmission to get you home or at a minimum you can’t to that if you can’t afford to install a new transmission and want to continue driving.
What viscosity is ATF?
Temp. [°C]Dyn. Viscosity [mPa.s]Kin. Viscosity [mm²/s]0217.29247.3910118.06135.422070.0480.933044.7052.04
Can I use engine oil as gear oil?
No. You can’t use the engine oil as a lubricant in your gearbox. Every lubricant possesses some physical and chemical properties to suit the application in which it is used. If it is used in applications for which it is not meant, then it will hamper the performance of the system.
Is transmission and primary fluid the same?
What are the differences? In essence, Synthetic V-Twin Transmission Fluid and Synthetic V-Twin Primary Fluid are formulated to protect just one area of your bike rather than three. This specificity allows us to engineer each lubricant for its precise application.
