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