![]() ![]() Those using an 80W or 75W-90 in their transmissions are actually using a much thinner oil. So those opting for a gear lube thinking that they are using thicker oil, really are not. The industry standard for measuring viscosity is in “centistokes” at 100☌.Īs you can see, the 20W-50 motorcycle oil is relatively close to the 75W-110 in terms of actual viscosity. Let’s look at the actual viscosity numbers of AMSOIL 20W-50 Motorcycle Oil and AMSOIL Severe Gear 75W-90, 75W-110 and 75W-140. But remember that engine oils and gear lubes use different viscosity scales to prevent confusion. Some may think that they are using a thicker oil by using a gear lube. Therefore, it will not leave transmission or primary components vulnerable to accelerated wear.ĪMSOIL 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. It is contains additives to prevent wear and the 100% synthetic base oil will not shear down (thin out). Expect smooth, quiet shifting with maximum component life. Related: See All Of Our Articles On Harley-Davidson Motorcycles And Synthetic Oil AMSOIL V-Twin 20W-50 Works (and works very well indeed)ĪMSOIL 20W-50 Synthetic Motorcycle Oil is specifically designed to withstand the rigors of engine, transmission and primary chaincase use. For those that prefer a specialized fluid, the V-Twin Primary and V-Twin Transmission Fluids will certainly provide outstanding performance and protection. It is certainly a highly competent and convenient choice for all three components. AMSOIL V-Twin 20W-50 is designed for engine, primary and transmission use. Should one use these dedicated fluids? Or is AMSOIL V-Twin 20W-50 acceptable for primary and transmission use? There truly is no wrong answer. These are called AMSOIL V-Twin Primary Oil and AMSOIL V-Twin Transmission Oil. Update: AMSOIL now offers dedicated fluid for Harley Davidson primary chain-cases and transmissions. What is the best combination for my bike?”Īnswer: 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. Some even use ATF in chaincase and claim they have great results. Some use gear lube in the transmission and chaincase. There are a lot of different combinations put out there on the internet. Obviously the engine will take your synthetic 20W-50, but I’m curious about what to use in the primary and transmission. Auto Cleaning Products, Degreaser and Carb CleanerĪ reader asks: “I’m looking to switch my Harley-Davidson Street Glide Special over to AMSOIL.Shock Therapy Suspension Fluid #5 Light (STL), #10 Medium (STM).Synthetic Multi-Vehicle Power Steering Fluid (PSF). ![]() The transmission oil level should be halfway across the throw out bearing or up to the bottom threads of the fill plug hole with the motorcycle upright and level.įinal Panhead oil level should be set after the motorcycle is started and has achieved operating temperature. Kevin fills the Panhead oil tank with 3 full quarts and fills the transmission case with 24 ounces. This combination is always more susceptible to stripping. The drain plug is steel and the transmission case is aluminum. Especially with the transmission drain plug. It is important that drain plugs are not over-tightened when re-installed. He closely examines the drain plugs for debris prior to cleaning and prepping the plugs for re-installation. Kevin keeps an eye out for metallics or debris in the draining oil. Engine and transmission oil is inspected as it drains. Kevin uses a 3/4″ socket to remove the transmission drain plug. Before releasing the drain plug, Kevin sets up a funnel and a small piece of cardboard to direct the drained oil into the basin. The Panhead oil drain plug is on the bottom, right side corner of the oil tank. Kevin sets an oil drain basin beneath the motorcycle. The oil tank fill plug is now removed for oil tank ventilation when draining. This allows him to access the top of the Panhead oil tank. Kevin gets started by lifting the seat out of the way and removing the battery cover. This way, the oils will be very fluid and will more thoroughly drain from the Panhead oil system and transmission case. Until it is safer to handle without getting burned. Then, allow the motorcycle to cool down a little. Before attempting to drain motor or transmission oil, it is important to bring the motorcycle up to operating temperature. A rider should not exceed 2,500 miles on an older, air cooled, Harley Davidson. Kevin says he prefers to change his Panhead oil between 1,500 and 2,000 miles. He is set up to demonstrate a thorough Panhead oil and transmission oil change. Kevin has a classic Harley Davidson Panhead on his lift. Articles on Harley-Davidson How-to and More ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |