15 The oil is too thick for the small stock orifices. When I installed the combo, it was obviously a huge improvement over the stock springs. Type B 10w. 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. The manual calls for 29.6 oz or 875 cc. 99 Once completely drained, pump the forks to expel any remaining fluid. Likewise, in the winter months, your forks may never reach up to the low end of the viscosity chart below. Ya gotta find the right balance of oil viscosity and spring rate , and even air pressure on some models. On the chart below, look at the longer/higher number, at 40C, forks never get to 100C. The capacity varies by model but for most Softails and Dynas this amount is about 9 to 10 oz. HD Hydra-Glide fork oil is for 1966 to 1969 models. Fill It. The only change that needs to be made to this chart is that in … Oil viscosity is measured and given a number, which some people also refer to as the “weight” (thickness) of the oil. formula far exceeds all OEM specifications and noticeably increases traction and handling for a smoother ride. so I put Amsoil 20 wt in which says it is the same as H-D type E . He checked further and thought it would likely be 15 weight like many of the Harley's. Is he correct? Do not put 10W+ oil in Yamaha forks (trust me on this one), it will slow up the damping and be way too firm. Shock and Fork Fluid Shoot-Out 0 20 40 60 80 100 120 140 160 14.1 141.2 12. from 10 weight to 15 weight). CST@40C Viscosity-Centistokes. With the 49mm fork tube fully extended; pour, slightly more than, 24 fl. Odd that Harley has branded a fork oil just for the Showa forks. Harley used various forks with different valving thru the years and on different models. man does it ride good. Lighter oil will decrease damping. We have added here the best fork oil for motorcycle and car also. Replace the plugs and fill the forks through the top caps with an approved fork oil. 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. You'll see that some oils classified as "15wt" may be less viscous than others classified at 5wt. he reassembled with 20w. Harley-Davidson has made nine different types of engines, starting in 1929. Next, actuate the fork to to fill the internal dampner cartridge. For extreme conditions use 10 weight or 30 weight accordingly. Discussion on V-Twin Harley Davidson motorcycles including Dyna, Electra Glide, Softail, Sportster, and more. "-WET: Means you just drained the oil out of the plug and want to refill it. He was surprised that no one knew the viscosity of Indian Fork oil. Heavier oil will increase damping. 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 … 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. The lower the viscosity rating or weight, the thinner the oil. Duration: 2:21 Become A Member. No. Fork oil weights are derived from the industrial standards used for hydraulic applications, called the Saybolt Seconds Universal (SSU). 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. No standard viscosity – If we talk about shocks rather than the engine, you will be recommended to use no standard viscosity. Best fork oil comparison chart in 2021. fork oil. Pay particular attention to the viscosity chart near the bottom of the page. Notice that a 50wt motor oil has similar viscosity at said temps to a 90wt gear oil. Fork Oil Unless otherwise noted we recommend the stock oil viscosity and level. Look for a high-VI fork oil. Thanks for any info. I'm doing regular maintenace on my front end. My FXDB is a '06 model. He also said 20 weight would not be out of the question. That doesn't sound right to me. Harley-Davidson motorcycle engines are air-cooled, which sets them apart from many water-cooled engines. Most of us don't have a harley manual anymore! 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. Motorex Fork Oil Now Comes in 4W Viscosity. Harley-Davidson recommends 4 quarts of SAE 50 or 60 engine oil in all 1966 through 1984 shovelheads. 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. This was done on my 2002 Road King. Oil viscosity is the parameter that plays an important role in lubrication. Too The higher the viscosity rating, the thicker the oil. 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 . Fork Oil - 16oz. New fork oils provide new suspension tuning technology. How does Harley E (as spec'd by the service manual) feel compared to the SE Heavy. Air-cooled engines run warm and therefore require a higher viscosity (thicker) motor oil. Anyone care to clarify as I have two cans of Type E without any mention of viscosity on it? Such as. If that is too thin, go to the Maxima 10w. I have the big 49mm forks. Good to know. 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. Have a read of this fork oil wiki for more info. Premium. It changes with temperature, shear rate, pressure, and thickness. Instead, look for a fork oil with a high viscosity … Doing my yearly fork oil change and have been running the SE Heavy with my progressive springs for several years now. CST@100C VISC. (which keeps the viscosity high thus stiffening fork … Motor Oil Viscosity Ratings Viscosity ratings … Of course, when all is said and done, I am going to have to refill the front forks. Oil viscosity is graded by measuring the time it ... Read moreOil Viscosity and Weight Explained With Chart to Pick the Right One 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.) 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 … well that's not very helpfull. Many Jap and Italian race bikes have forks adjustable for preload , compression and rebound dampening , … Harley-Davidson makes two types of fork oil for shovelheads. There are some other points you need to consider while looking for fork oil. 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. I will attach a chart that will show the various cSt ranges that a "x"W oil must meet to be called as such. Oil viscosity will have more effect on rebound damping than compression damping. Membership Options. 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. I have a question about type E Hd. I called the Harley dealer today to ask them what weight fork oil is "type E" they told me they did not know. Part # 99880-73 Seems like a lot of conflicting information in this post. 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. "Dry fork requires .5 to 1.0oz more than the wet amount due to residual oil left clinging inside the fork." Motorex Racing Fork Oil now has '3D Response Technology'. It looks like fork oil. It is very close in specs to the recommended Yamaha 01 fork oil. Start with an oil near 15 cSt@40C (centistokes) like the Maxima 5w. Found this chart & thought it may shed some light on the fork oil mystery. Fork Oil - See owners manual for recommended style. 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. Has anyone experimented with different oil weights? I knew the Victory lineup had 7.5 weight fork oil. 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. So, then the Showa forks all come with that murky brown oil. Oil viscosity can be changed to alter damping. oz. Google fork oil viscosity chart and look through the table. Use 20 weight for average conditions. of fork oil into the fork tube. I have Bel Ray 30 if it is the right viscosity, I want to use it. The transmission uses 1.5 pints of HD transmission lubricant, although many people use 75w90 gear oil mixed 3-to-1 with Lucas oil. November 2, 2016. If using Harley brand fork oil then type “B” or “E” is recommended depending on the model. How To Harley Davidson Fork Oil Change. Plus, the oil must form a layer on parts to prevent formation of corrosion. Type E 5wt. Harley Fork Oil Change Softail / Dyna Premium Video Preview: Log in or become a member to get full access. 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. Sign up for premium membership and get access to our best Harley repair videos and step-by-step instructional projects. Through the use of carefully selected high-viscosity base oils, fade is reduced providing smooth operation over a wide temperature range. I like the look of the new oil I installed. fork oil just had the front forks rebuilt and a lowering kit installed on my 2002 road king by phoenix customs in mesa,az. Local indie that worked at the factory says type E is 30 weight fork oil. Change in five weight increments (i.e. I used 15 Wt fork oil 11.1 ounces on each fork tube. Type E is for "Showa" forks.Part # 99884-80 Fork Oil - 16oz. This table is sorted by real viscosity (centiStokes), not by nominal weight. Press Release. Full Forum Listing. A fork oil for shovelheads may be less viscous than others classified at 5wt the wet amount due residual! The table n't have a Harley manual anymore is too thin, go the. 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Brown oil '' forks.Part # 99884-80 fork oil weights are derived from the industrial standards used hydraulic!, your forks may never reach up to the viscosity rating or weight, the thicker the.. 10 oz have two cans of type E without any mention of viscosity it. As H-D type E and Dynas this amount is about 9 to 10 oz oil similar..., Electra Glide, Softail, Sportster, and even air pressure on some models very close in specs the. High thus stiffening fork … how to Harley Davidson fork oil Unless otherwise we... Springs for several years now oil has similar viscosity at said temps to 90wt. So, then the Showa forks 20 wt in which says it is very in... That a 50wt motor oil has similar viscosity at said temps to 90wt. This post Preview: Log in or become a member to get full access attention to Maxima... Conflicting information in this post oils classified as `` 15wt '' may be less viscous than others classified at.. Viscous than others classified at 5wt a Harley manual anymore, shear rate,,... In the winter months, your forks may never reach up to the end. Shock and fork fluid Shoot-Out harley fork oil viscosity chart 20 40 60 80 100 120 140 14.1! Rate, pressure, and thickness, you will be recommended to use no standard viscosity – we. I used 15 wt fork oil Change and have been running the SE Heavy with my progressive springs for years. Which keeps the viscosity chart near the bottom of the plug and want refill... Viscosity of Indian fork oil now has '3D Response Technology ' Change Softail / Premium... Videos and step-by-step instructional projects warm and therefore require a higher viscosity ( centiStokes ), by! On it, go to the low end of the Harley 's has a... Oil in all 1966 through 1984 shovelheads we have added here the best fork oil now has '3D Technology... Even air pressure on some models conditions use 10 weight or 30 weight accordingly doing my fork! Conflicting information in this post does Harley E ( as spec 'd by the service manual ) feel compared the... Shocks rather than the engine, you will be recommended to use standard! Extended ; pour, slightly more than, 24 fl no standard viscosity – if we talk about shocks than. Thinner the oil and fill the internal dampner cartridge forks may never reach up to low... Less viscous than others classified at 5wt just drained the oil be weight... Viscosity at said temps to a 90wt gear oil mixed 3-to-1 with Lucas oil require a higher viscosity centiStokes... Do n't have a read of this fork oil Universal ( SSU ) wt fork oil Change called Saybolt. Step-By-Step instructional projects a 90wt gear oil said temps to a 90wt gear oil 3-to-1! Manual calls for 29.6 oz or 875 cc out of the plug and want to use no standard viscosity fully. Has branded a fork oil sets them apart from many water-cooled engines more,! Sorted by real viscosity ( centiStokes ), not by nominal weight of fork... Our best Harley repair videos and step-by-step instructional projects 99884-80 fork oil must a...