SAE established the grading system, which includes a numerical code system. As earlier mentioned, SAE stands for Society of Automotive Engineers. The higher the number, the thicker is the oil. Numbers you find on different oil cans, such as SAE 30 or SAE 10W-30, are viscosity or weight numbers that indicate the thickness of the oil. You can easily predict the behavior as well as the design of a mechanical system if you have detailed knowledge of oil viscosity. One of the factors that affect viscosity is the operating surface. Oil viscosity differs from one lubricant to another with respect to temperature. Thicker oils have more resistance to shearing and losing film strength at higher temperatures. The higher the number, the thicker the oil and vice versa. The numbers are commonly assigned in ranges of 5, 10, 20, 30, 40, and 50.

The ability to flow is most often selected by the Society of Automotive Engineers (SAE) numbers. Motor oil viscosity is a common term we need to understand completely, and it refers to the ability of an oil to flow.

Oil viscosity is graded by measuring the time it takes for a standard amount of oil to flow. It changes with temperature, shear rate, pressure, and thickness. Definitely easier to change with the forks off the bike.Oil viscosity is the parameter that plays an important role in lubrication. Unless anyone sees that is going to present a problem. Might keep the heavier weight in, just to see what it feels like. My front end dived as yours is and the SE heavy oil solved the problem. I have a 2006 Dyna and put in the SE heavy oil, I would never go back to the regular fork oil. Is this correct? Click to expand… Should I put heavy fork oil in my Dyna? From the link you provided Jack, that would provide even a more stiff ride to the ‘B’ oil.

My dealer recommended the Screaming Eagle Fork Oil when I was in there the other day. change to benefit from synthetic oil’s cost. In my opinion, Harley forks don’t see enough movement or temp. The manual should specify the oil type that you can cross reference the weight from the 1st post in the thread. Each motorcycle brand has its own specifications for … FAQ harley type e fork oil weight What kind of oil does a Harley use?įork oils are as follows: Harley Type E is 5 wt Harley Type B is 10 wt Screaming Eagle is 15 wt How to tell what type of oil to use for forks? What is fork oil in bike? Fork oil is a lubricant that is used inside the tubes of conventional front forks on a motorcycle. What weight is Harley Screamin Eagle Fork oil? Screamin’ Eagle® Performance Fork Oil – A heavier oil (15wt) provides extra damping in performance application.

Harley fork oil viscosity chart