- What oil is best for harley transmission manual#
- What oil is best for harley transmission series#
What is the Best Harley 103 Transmission Oil?
Strong driveline with low routine maintenance. 6-speed Cruise Drive transmission system. Standard equipment on the entire Softail and Touring HD motorcycles (sometimes Dyna too). 
Launched in 2012 after meeting success with earlier models. That’s why people are heavily interested in finding Harley 103 transmission oil change tips and tutorials. The whole 2012 range of Harley Softail and Touring models are equipped with the 103 cubic inch engine, so it’s quite popular too. The engine is also equipped with an oil cooler, helping all Touring models reach their maximum potential. Its predecessors, 88 and 96 were well-received, but the 103 came with an automatic compression release system that took over, offering greater performance. What oil is best for harley transmission series#
The 103 is a classic Harley Davidson twin cam engine used on motorcycles.Īfter the Evolution engine met great success in the industry, the company decided to move forward and create an even more impressive product, and thus invented the 103, part of the series of engines that use two cams for the valvetrain. What does it mean by 103 for Harley Davidson? It is used for vehicles since the 1940s and, today, you can choose from a variety of types with many functions other than lubrication alone. The properties of transmission oil keep the transmission system cool as well. Without this pressure, the internal parts wouldn’t work properly.
What oil is best for harley transmission manual#
This fluid should be present for both manual and automatic gearboxes, considering that for the latter it also ensures hydraulic pressure. Its purpose is to lubricate the parts inside the transmission box, thus keeping them from eroding or grinding down. Transmission oil, also known as transmission fluid, is a substance that vehicles require to function properly.
15 How do you check the transmission oil level on a Harley Davidson?. 14 What oil should you use for a Harley 103 transmission?. 13 How often should you do a Harley 103 transmission oil change?. 12 How much oil does a Harley 103 transmission change involve?. 11 FAQ’s Harley Davidson Transmission Oil Change Instructions. 10 Available 103 transmission oil for Harley bikes. 8 How is the engine improved after changing the transmission oil?. 7 Steps to Follow For Harley 103 Transmission Oil Change. 6 Tools Required for a Transmission Oil Change. 4 How do you know which Transmission Oil is the best?. 3 What is the Best Harley 103 Transmission Oil?. 2 What does it mean by 103 for Harley Davidson?. We’re not sure that the quieter operation is worth the hotter operating temps and (arguably) stiffer shifting. In conclusion, 75W-140 can certainly be used in Harley-Davidson transmissions. That’s why the 20W-50 motorcycle oil’s viscosity is so close to that of the the SAE 110 transmission fluid.Īlso note that the 75W-140 is a whopping 47% thicker than the commonly used 20W-50 and 31% thicker than the (SAE 110) V-Twin Transmission Fluid. Note that different scales are used to measure the viscosity of motor oils and gear oils. V-Twin Transmission (SAE 110)- 20.7 cST. The oil viscosity is measured in centistokes (cST) at 100☌. Here are the viscosity numbers for AMSOIL V-Twin 20W-50, V-Twin Synthetic Transmission Fluid and Severe Gear Synthetic 75W-140. 
How Does 75W-140 Viscosity Compare To Other Transmission Oil Options? A thicker transmission fluid may actually make gear selection slightly more difficult. Shifting performance– There is no shifting performance benefit to using a thicker fluid. Wear protection doesn’t necessarily improve by using a thicker oil. AMSOIL V-Twin Synthetic Transmission Oil or AMSOIL V-Twin 20W-50 Synthetic Motorcycle Oil can provide maximum transmission life. Wear protection– Using a 75W-140 will not improve gear wear protection. Hotter transmission operating temperatures would be the result.
The downside to using a thicker oil is that it will hold more heat. The thicker fluid can dampen noises and rattles. The reason that some Harley owners use 75W-140 is that the transmission tends to run quieter. Let’s discuss the pros and cons of going with 75W-140. For instance, AMSOIL V-Twin Synthetic Transmission Oil is an SAE 110 gear oil. But, do consider that 75W-140 is much thicker than oils typically used in Harley transmissions. Our answer: It is perfectly acceptable to use 75W-140 gear oil in Harley-Davidson transmissions.
Auto Cleaning Products, Degreaser and Carb CleanerĪ reader asks: Can I use 75W-140 gear oil in my 2007 Harley-Davidson Road Glide transmission? Some say that the heavier oil quiets down the transmission. Shock Therapy Suspension Fluid #5 Light (STL), #10 Medium (STM). Synthetic Multi-Vehicle Power Steering Fluid (PSF).
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