CST@40C Viscosity-Centistokes. This table is sorted by real viscosity (centiStokes), not by nominal weight. Found this chart & thought it may shed some light on the fork oil mystery. I used 15 Wt fork oil 11.1 ounces on each fork tube. Next, actuate the fork to to fill the internal dampner cartridge. This measurement uses a similar viscometer arrangement as used to determine a cSt value, but grades the oil using a much more sensitive viscosity calibration scale. oz. Google fork oil viscosity chart and look through the table. My FXDB is a '06 model. (which keeps the viscosity high thus stiffening fork … We have added here the best fork oil for motorcycle and car also. Shock and Fork Fluid Shoot-Out 0 20 40 60 80 100 120 140 160 14.1 141.2 12. You'll see that some oils classified as "15wt" may be less viscous than others classified at 5wt. PJ1 FORK TUNER OILS are specially blended with anti-foaming additives, which provide consistent fork performance superior to standard fork oil, even under severe temperature ranges.Our special HIGH VISCOSITY INDEX (H.V.I.) Bel-Ray High Performance Fork Oil is a front suspension oil formulated for use in all suspension forks including those using cartridge and dual chamber systems. I like the look of the new oil I installed. Is he correct? I have a question about type E Hd. Air-cooled engines run warm and therefore require a higher viscosity (thicker) motor oil. Oil viscosity can be changed to alter damping. On the chart below, look at the longer/higher number, at 40C, forks never get to 100C. Start with an oil near 15 cSt@40C (centistokes) like the Maxima 5w. Oil viscosity is graded by measuring the time it ... Read moreOil Viscosity and Weight Explained With Chart to Pick the Right One The oil is too thick for the small stock orifices. The Ohlins R&T oil that's 5wt which I use on my zx6r is 19 cSt (centistoke...unit of viscosity measurement) at 40 degrees C. Traxxion Dynamics recommends using Maxima fork oil 15wt in their instructions that come with their damper … If that is too thin, go to the Maxima 10w. I knew the Victory lineup had 7.5 weight fork oil. The lower the viscosity rating or weight, the thinner the oil. With the 49mm fork tube fully extended; pour, slightly more than, 24 fl. 118.6 9.5 82 10.4 67.3 8.9 64.9 8.9 20.9 6.67 20.75 7.6 ... 21.6 4.4 21.6 6.2 20.5 3.82 16.9 3.77 16.49 3.45 3.45 15.06 14.57 4.1 12.6 4.4 10.3 1.9 9.2 VISC. i used it to compare oils not worrying about the explanatory power of this chart to me it was just an indication of what oils can be compared, eg if i'm using the Kayaba fork oil which is other oil is close to it.But obviously this comparison doesn't mean nothing, since - if i got you right - even if eg the VI is similar, the real world behavior of those two oils can be way different. It changes with temperature, shear rate, pressure, and thickness. Anyone care to clarify as I have two cans of Type E without any mention of viscosity on it? Harley Fork Oil Change Softail / Dyna Premium Video Preview: Log in or become a member to get full access. The higher the viscosity rating, the thicker the oil. So, then the Showa forks all come with that murky brown oil. Do not put 10W+ oil in Yamaha forks (trust me on this one), it will slow up the damping and be way too firm. 99 Premium. He also said 20 weight would not be out of the question. Oil viscosity is the parameter that plays an important role in lubrication. fork oil. Full Forum Listing. New fork oils provide new suspension tuning technology. The transmission uses 1.5 pints of HD transmission lubricant, although many people use 75w90 gear oil mixed 3-to-1 with Lucas oil. Therefore, I thought I would share with everyone some Harley-Davidson fork oil specifications – in particular, information regarding the proper fork oil weight to use and capacities for major models. That doesn't sound right to me. Have a read of this fork oil wiki for more info. How To Harley Davidson Fork Oil Change. Duration: 2:21 Become A Member. The capacity varies by model but for most Softails and Dynas this amount is about 9 to 10 oz. There are some other points you need to consider while looking for fork oil. Has anyone experimented with different oil weights? Harley-Davidson makes two types of fork oil for shovelheads. It looks like fork oil. Part # 99880-73 Seems like a lot of conflicting information in this post. CST@100C VISC. Harley used various forks with different valving thru the years and on different models. In some areas, the fork oil is already heated up past 100°F by the sun before you start to ride which lowers viscosity and softens the fork action. Odd that Harley has branded a fork oil just for the Showa forks. MOTOKU Pack of 4 Fork Oil Dust Seal for Harley-Davidson FXDC FXD FXDL FXDS-CON FXDX FXLR FXR XL1200 Honda CB650 VF700 VF750 4.7 out of 5 stars 15 $19.99 $ 19 . I called the Harley dealer today to ask them what weight fork oil is "type E" they told me they did not know. Through the use of carefully selected high-viscosity base oils, fade is reduced providing smooth operation over a wide temperature range. Fork Oil - 16oz. Harley-Davidson recommends 4 quarts of SAE 50 or 60 engine oil in all 1966 through 1984 shovelheads. The only change that needs to be made to this chart is that in … Pay particular attention to the viscosity chart near the bottom of the page. Such as. so I put Amsoil 20 wt in which says it is the same as H-D type E . I will attach a chart that will show the various cSt ranges that a "x"W oil must meet to be called as such. Look for a high-VI fork oil. Type B 10w. man does it ride good. 15 Discussion on V-Twin Harley Davidson motorcycles including Dyna, Electra Glide, Softail, Sportster, and more. When I installed the combo, it was obviously a huge improvement over the stock springs. How does Harley E (as spec'd by the service manual) feel compared to the SE Heavy. Most of us don't have a harley manual anymore! Best fork oil comparison chart in 2021. The viscosity of fork oil plays a huge role in the damping effect of the forks, as a thicker oil will create more resistance as it is passing through the small orifices in the damping rod. Plus, the oil must form a layer on parts to prevent formation of corrosion. HD Hydra-Glide fork oil is for 1966 to 1969 models. Once completely drained, pump the forks to expel any remaining fluid. If using Harley brand fork oil then type “B” or “E” is recommended depending on the model. No. formula far exceeds all OEM specifications and noticeably increases traction and handling for a smoother ride. FORK TYPE "E" SPECTRO FORK OIL TYPE "E" 2012 USE OF SPECTRO PRODUCTS WILL SAFEGUARD YOUR WARRANTY *Magnuson-Moss Warranty Improvement Act Title 15 Commerce and Trade, Chapter 50 Sec. Type E is for "Showa" forks.Part # 99884-80 Fork Oil - 16oz. Fork Oil - See owners manual for recommended style. Type E 5wt. It is very close in specs to the recommended Yamaha 01 fork oil. The manual calls for 29.6 oz or 875 cc. Heavier oil will increase damping. Lighter oil will decrease damping. Oil viscosity will have more effect on rebound damping than compression damping. Of course, when all is said and done, I am going to have to refill the front forks. He was surprised that no one knew the viscosity of Indian Fork oil. Too Membership Options. Fork oil weights are derived from the industrial standards used for hydraulic applications, called the Saybolt Seconds Universal (SSU). No standard viscosity – If we talk about shocks rather than the engine, you will be recommended to use no standard viscosity. from 10 weight to 15 weight). Local indie that worked at the factory says type E is 30 weight fork oil. Motorex Racing Fork Oil now has '3D Response Technology'. I have Bel Ray 30 if it is the right viscosity, I want to use it. Many feel that Harley knowingly uses an overly light fork oil since Touring bikes are meant to allow for long, comfortable stints in the saddle. Doing my yearly fork oil change and have been running the SE Heavy with my progressive springs for several years now. He checked further and thought it would likely be 15 weight like many of the Harley's. he reassembled with 20w. fork oil just had the front forks rebuilt and a lowering kit installed on my 2002 road king by phoenix customs in mesa,az. well that's not very helpfull. "-WET: Means you just drained the oil out of the plug and want to refill it. Harley-Davidson motorcycle engines are air-cooled, which sets them apart from many water-cooled engines. Likewise, in the winter months, your forks may never reach up to the low end of the viscosity chart below. Motorex Fork Oil Now Comes in 4W Viscosity. Ya gotta find the right balance of oil viscosity and spring rate , and even air pressure on some models. "Dry fork requires .5 to 1.0oz more than the wet amount due to residual oil left clinging inside the fork." Motor Oil Viscosity Ratings Viscosity ratings … Oil viscosity is measured and given a number, which some people also refer to as the “weight” (thickness) of the oil. Notice that a 50wt motor oil has similar viscosity at said temps to a 90wt gear oil. November 2, 2016. 20w-50 oil may be used in all three – Engine, Transmission, and Primary Case as specified by the H-D Motor Company, however Harley Performance recommends using a heavier 75w-90 gear lube in the transmission.Both methods exceed the manufacture’s and API specification and will not void any warranty. If corrosion starts, it won’t stop, spreading and depositing flakes of contaminant in the oil that act like sandpaper and scour metal parts until they’re worn out. of fork oil into the fork tube. Fill It. Good to know. Thanks for any info. Press Release. I'm doing regular maintenace on my front end. Fork Oil Unless otherwise noted we recommend the stock oil viscosity and level. Sign up for premium membership and get access to our best Harley repair videos and step-by-step instructional projects. Use 20 weight for average conditions. For extreme conditions use 10 weight or 30 weight accordingly. Change in five weight increments (i.e. Use Shock Therapy Medium #10 in suspension systems where more dampening control and slower rebounds are desired, including those made by Ohlin*, FOX*, RACETECH (US2), Koni* and WP shocks; and Harley-Davidson* forks that recommend type "E" or "B" fork oil. This was done on my 2002 Road King. The steps to perform this service are detailed yet simple, as Bob and Mark demonstrate in this video on how to fill fork oil on your Harley Ultra. Replace the plugs and fill the forks through the top caps with an approved fork oil. Red Line Suspension Fluid / Fork Oil Cross Reference Viscosity cSt @ cSt @ Red Line Equivalent Current Fluid 40°C 100°C V∆T For Fork For Shock Bardahl Fork Oil 5w 19.3 5.1 3.78 LW F XL S Bardahl Fork Oil 10w 35.5 6.9 5.14 Med F LW S Bel-Ray HVI 3w 11.2 4.1 2.73 … I have the big 49mm forks. Many Jap and Italian race bikes have forks adjustable for preload , compression and rebound dampening , … Instead, look for a fork oil with a high viscosity … Harley-Davidson has made nine different types of engines, starting in 1929. Must form a layer on parts to prevent formation of corrosion now has Response. V-Twin Harley Davidson fork oil wiki for more info the manual calls for 29.6 oz 875. Showa '' forks.Part # 99884-80 fork oil for motorcycle and car also the wet amount due residual. Davidson fork oil Indian fork oil viscosity and spring rate, pressure, and air! Become a member to get full access reduced providing smooth operation over a temperature. 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