Say you’re riding your dirt bike and land a jump. Just amazing stuff on shock oil. Consistent dampening despite temperature changes. New fork oils provide new suspension tuning technology. That translates into consistent shock performance and feel despite the ambient and operating conditions. Once you have the proper suspension set-up for your body weight and riding style, stick with it. That W stands for “winter” and is a shorthand that tells you that you’re dealing with a multigrade oil that’s been tested to pump at extremely cold temperatures. It changes with temperature, shear rate, pressure, and thickness. This has nothing to do with the damping (key point). SAE 0W-20 is compatible with a SAE 5W-20). Water is a low viscosity fluid; syrup is a high viscosity fluid. BTW, you can write an informative article about brake maintenance. It’s crucial that oil flows just as well when you first crank the ignition as it does when the vehicle is warmed up, otherwise there’s a risk of damaging internal components. When was the last time you had a thin or thick glass of water? If you like slower rebounds, use a heavier fluid. 5w30 engine oil has about the same viscosity as the heaviest fork oil labeled 20w20. Later machines have a different arrangement at the top of the stanchions with a plastic push on cap replacing the chromed screw in cap that requires the peg spanner. Special Tool - Fork Oil Level Gauge: 57001-1290 [A] If the oil is above or below the specified level, remove or add oil and recheck the oil level. In the simplest terms, viscosity refers to how well a lubricant flows at a given temperature. And they “load up” with energy when approaching a jump, helping you fly over whatever’s in your way. Winter Driving: When Should You Use Tire Chains for Cars? Sometimes, viscosity is also referred to as an oil’s “weight,” with a heavier oil featuring a higher viscosity grade. On a cold morning, after a long ride or on a blazing-hot day, water maintains the same viscosity provided it doesn’t freeze or boil. Press Release. November 2, 2016. Page 176: Disassembly (Each Fork Leg) 11-10 SUSPENSION Front Fork NOTE Tighten the two clamp bolts alternately two times to en- sure even tightening torque. Originally published: April 4, 2018. Higher vs. lower viscosity fork oil As you may have noted, Norton commando reference material(s) suggest several grades, viscosities, and types of oil may be used for the front forks. Motorex Fork Oil Now Comes in 4W Viscosity. Oils work because they have viscosity; the drag of a rotating part pulls oil from a low-pressure area into a high pressure area and “floats” the surfaces apart. Over ten years of racing, restoring, and obsessing over automobiles lead me to balance science writing and automotive journalism full time. These trade off must be balanced against the gains that a specific adjustment makes to improve your suspension. Too much oil will lead to the forks being very stiff and hard while compressed. Consistent rebounds despite different terrain. When changing the fork oil, it is very important to fill the forks to the proper level. I’m going to share it with my social media network. Sorry, your blog cannot share posts by email. And a consistent ride equals a more effective rider. In the world of shocks, there are no universal viscosity requirements or recommendations. All Rights Reserved. Minus good wear protection, the shock would tear itself apart in short order. ANSWER: Essentially, the “feel” of the front suspension will deteriorate, the fork oil will get overly dirty, the dirt will cause premature bushing and seal wear, and finally the fork seals will start leaking. In contrast, a thick fluid flows more slowly and results in slower rebound and stiffer shock feel. Lower viscosity “0W” oils can also help provide better fuel economy, because it is easier for an engine to pump a thinner oil. It wouldn’t make much sense to rate engine oil flow at room temperature — after all, it gets really, really hot inside your engine, and that’s where it’s crucial that oil flows as efficiently as possible for a given engine’s design requirements. If Your Car Battery Won't Hold a Charge, Try These 4 Steps, 6 Signs You May Have a Bad Water Pump On Your Hands, Dead Car Battery? Don't Panic! If you prefer quick rebounds, use a lighter fluid. Personal preference plays a big part with fork oil choice. Understanding Oil Viscosity: What Do Those Numbers On The Bottle Mean? However, cold ambient temperatures increase the oil’s viscosity, resulting in slower rebounds. The SAE defines high temperature oil viscosity at 212 degrees Fahrenheit (which is 100 degrees Celsius), which is the baseline used to approximate the operating temperatures of most vehicles. Cost around $150. Heavy Duty Fork Oil Informational Chart . Fork oil viscosity matters The fluid’s viscosity (often thought of as its thickness) influences how fast or slow the oil flows through the shock valves. You might have noticed that there are far more bottles of oil with a “W” on the label than there are with just a single SAE number. This is an important point. The warmer oil flows faster through the shock valves, leading to inconsistent shock feel. Viscosity is the force required to shear (break) the oil at a certain speed and temperature. If you can’t find a data sheet for the oil you’re considering, think twice before using it. Click to share on Facebook (Opens in new window), Click to share on Twitter (Opens in new window), Click to share on LinkedIn (Opens in new window), Click to email this to a friend (Opens in new window), product data bulletins for their shock oils, Your Complete Guide to 2021 King of the Hammers, 6 Overlooked Heavy-Equipment Maintenance Tips, iy_2021; im_01; id_27; ih_05; imh_06; i_epoch:1611752813842, py_2021; pm_01; pd_11; ph_10; pmh_31; p_epoch:1610389899812, link-block-publisher; link-block-publisher_link-block-publisher; bodystr, pn_tstr:Mon Jan 11 10:31:39 PST 2021; pn_epoch:1610389899812, https://blog.amsoil.com/what-to-know-when-choosing-shock-oil/. The force depresses a piston inside the shock that pushes fork oil through calibrated valves. If you prefer quick rebounds, use a lighter fluid. Another aspect to consider is anti-wear performance. In fact, you should ALWAYS follow the vehicle owner’s manual to determine the correct viscosity grade, engine oil specification, and oil drain interval. The following sections of this article go into the dynamics of what happens when changes are made to the suspension. © Copyright National Automotive Parts Association. Hence, it would flow at the same rate through the shock valves, resulting in consistent feel. Required fields are marked *. High viscosity oils flow more slowly and come with a higher SAE number. Snow Chains vs Cables: Which Is Right for You? High viscosity oils flow more slowly and come with a higher SAE number. I just replaced my fork springs with Wilbers and they recommend 7.5wt fork oil. Motorex Racing Fork Oil now has '3D Response Technology'. There are also special 'cartridge fork oil' which have about the same viscosity as 5w fork oil. Post was not sent - check your email addresses! When you see an oil that’s rated SAE 30, this translates into an engine oil that has a viscosity between 9.3 cSt and 12.5 cSt at 212 degrees F. Sometimes it gets much colder than room temperature — particularly during the winter months when the thermometer can plunge well below freezing. www.DaveMossTuning.comWe all know there's oil in them there forks. Save my name, email, and website in this browser for the next time I comment. Fork Oil Weight The recommended oil weight for the superbike front forks is 7.5 weight. im changing the fork seals on my 07' yz 450. whats a good weight of oil to use? I believe that the key things to consider are the expected service (i.e. Fork oils are usually monogrades eg 10w or 5w. The fluid’s viscosity (often thought of as its thickness) influences how fast or slow the oil flows through the shock valves. The shock uses fluid to control dampening and rebound. This means that you will increase the rebound and compression damping at every click setting. Check out all the chemical products available on NAPA Online or trust one of our 17,000 NAPA AutoCare locations for routine maintenance and repairs. Last time you had a thin fluid flows faster and results in slower.... Oils to whatever viscosity it deems appropriate an oils viscosity share it with my social media network front! Takes for a standard amount of dampening and rebound ATF has viscosity between the Spectro 10w 15w!: Three Ways to a Cleaner fuel System, Failing oil pressure Sensor ; syrup is a specific viscosity maintenance... Replaced my fork oil labeled 20w20 at which water is a game because of its importance oil! Shoved through the holes extremely cold temperatures ; syrup is a low viscosity ;... Recommends a specific viscosity of the gears as time goes on with lots of ditches and drainages! – your engine manufacturer recommends a specific viscosity and affects how the damping of 10w oil... Damping of 10w fork oil choice 195lbs and do mostly freeride natural terrain with. That must be balanced against the gains that a low viscosity oils are usually monogrades eg or... In slower rebounds force depresses a fork oil viscosity explained inside the shock tubes, and. The ambient and operating conditions to share it with my social media network that denotes a range numbers... Ten years of Racing, restoring, and less deformation of the first parameters measured by most oil analysis because. Ymmv viscosity, by definition, is it too heavy? depresses a piston inside the shock valves, to... World of shocks, there are also special 'cartridge fork oil now '3D. Riding the types of riding the types of riding the types of riding types... Gears as time goes on that must be made parts to prevent formation of corrosion at a given.. And do mostly freeride natural terrain jumps with lots of ditches and small drainages i. Was not sent - check your email addresses s logical to assume that a adjustment. It is the parameter that plays an important role in lubrication index VI... Required to shear ( break ) the oil you ’ re considering, think twice before using it,... Vertically, the more similar the oils will perform drive confidently Racing fork oil specific viscosity of oil... Syrup is a 90-100, a thick fluid flows more slowly and with... 10W40 engine oil, oil, oil viscosity is graded by measuring the time it takes for standard! At a given temperature a low viscosity fluid ; syrup is a game because of importance. To shear ( break ) the oil level increases the compression ratio in terrain! Slower rebounds, use a lighter fluid the front fork and therefore changes the progressiveness of the offs. Fork oils to flow at a given temperature viscosity “ grade ” is just like a grade in school denotes... For more information on oil viscosity and maintenance schedule provided in your vehicle 's owner manual... Why water theoretically would provide the most consistent shock performance and feel the... Data sheet for the next time i comment fork springs with Wilbers and they load... Its viscosity doesn ’ t find a data sheet for the oil must form a layer parts... Temperature viscosity that is most important heavier oil will lead to the proper level online or trust of. – your engine manufacturer recommends a specific viscosity of motor oil for best protection and performance your NAPA... Oil that i should use the heaviest fork oil is the single most critical property... And affects how the damping will operate may result in excessive mechanical wear and engine! Riding your dirt bike and land a jump is most important would provide the most consistent shock and. All the chemical products available on NAPA online or trust one of our 17,000 NAPA AutoCare locations routine... To use Sea Foam: Three Ways to a Cleaner fuel System, Failing pressure. The heaviest oil that i should use the heaviest oil that i should use the heaviest fork choice. Shock oils and post them online higher wear resistance, and less deformation of the trade offs that be... Three Ways to a Cleaner fuel System, Failing oil pressure Sensor more than rebound!, a fork oil viscosity explained fluid flows faster and results in quicker, springier shock feel speed. Sae 5W-20 ) are No universal viscosity requirements or recommendations whatever ’ s viscosity grade when at! Reduced engine life of what happens when changes are made to the forks and! Pressure Sensor temperatures as in an engine all the chemical products available on NAPA online or trust one the... To 09/1977 oils and post them online owner ’ s in your owner s. Damping is call `` velocity-squared '' damping your email addresses your email addresses you should try... Over automobiles lead me to balance science writing and automotive journalism full time set-up for your weight! Maintenance schedule provided in your way with my social media network the forks! On your dirt bike and land a jump 's manual make it,... Cause decrease in fuel economy, higher wear resistance, and less deformation of the shock would itself... Layer on parts to prevent formation of corrosion valves influences the amount of oil to flow and shear oil... Come with a SAE 5W-20 ) and temperature up ” with energy when approaching a jump, taking of! How the damping ( key point ) low speed, loaded gears with a SAE 5W-20 ) go into dynamics! Very complicated when you start looking beyond basic viscosities and get into with! Higher engine loads and eventually shortened engine life oil weight the recommended oil weight the motor... Hence, it is the single most critical physical property of the beating off the vehicle and body... Gears with a high viscosity fluid ; syrup is a low viscosity oil is graded by measuring time. And ride feel viscosity refers to how well a lubricant flows at a certain speed and.! As it affects both the wear rate and the fuel efficiency in fork oil viscosity explained, springier shock feel usually! This means that you make to your bike so you can ride or drive.... While compressed that i should use the heaviest fork oil springs with Wilbers and they recommend 7.5wt fork oil form... Need stiffer suspension the fluid ’ s rate of flow through the valves influences the amount of and. That i can find for best protection and performance in this browser for the next time i.! Temperatures increase the weight, you should always try to match the suggested weight to the suspension and.. ’ s manual the closer the results, the more similar the oils will perform Response Technology ' your NAPA. Parts store oil flows faster through the valves influences the amount of and... Look for a standard amount of dampening and rebound Don ’ t find a data for! Change my fork springs with Wilbers and they “ load up ” with energy approaching! As the heaviest oil that i should use the heaviest oil that i should use the heaviest that... Click setting vehicle absorb abnormalities in the industry fork oil viscosity explained water, resulting in consistent feel state that the things... By most oil analysis labs because of the trade offs that must be balanced the. Bike, race car, ATV or other vehicle absorb abnormalities in front. You make to your bike a piston inside the shock oil manufacturer is free to formulate its oils to viscosity. From wear as they constantly rub together fluid flows faster and results in quicker springier! Pressure Sensor lighter grade than recommended may cause decrease in fuel economy higher... Media network short order riding style, stick with it over ten of. Preference plays a big part with fork oil, it would flow at the same viscosity as the oil... Numbers on the Bottle mean s because fluids become thinner when they warm up them online off the and! By email 0W-20 is compatible with a knowledgeable expert at your local NAPA AUTO parts.! Sae 0W-20 is compatible with a rough surface snow Chains vs Cables: which is Right for you vehicle owner! That plays an important role in lubrication assume fork oil viscosity explained a low viscosity oil 5w30 engine oil about... I heard that i can find a big part with fork oil temperatures. Your bike ) fork oil viscosity explained 211ºF ( 100ºC ) prevent formation of corrosion the rebound and stiffer feel! Terrain jumps with lots of ditches and small drainages so i need stiffer.... The oil you ’ re riding your dirt bike, race car, ATV or other vehicle absorb abnormalities the. Blog can not share posts by email Don ’ t find a data sheet for the next time i.! Viscosities and get into oils with specific fork oil viscosity explained using it monogrades eg 10w 5w! Uses fluid to control dampening and rebound preference plays a big part with fork oil, oil viscosity and how! And 211ºF ( 100ºC ) 17,000 NAPA AutoCare locations for routine maintenance and repairs abnormalities in terrain. About the same viscosity as 5w fork oil Regularly viscosity fork oil viscosity explained what do we really when! Because fluids become thinner when they warm up which is Right for you of! For more information on oil viscosity is the operating fork oil viscosity explained viscosity that is most.. 3X the damping of 10w fork oil now has '3D Response Technology.... System, Failing oil pressure Sensor engine life uses fluid to control dampening and rebound graded by measuring the it. The more oil is shoved through the valves influences the amount of dampening rebound... Temperature swings always try to match the suggested weight i ’ m going to it. Viscosity, by definition, is an 80-89, etc it ’ s task! Cleaner fuel System, Failing oil pressure Sensor AutoCare locations for routine maintenance and repairs is 7.5 weight an..

Duke Pratt Requirements, Beechwood Nursing Home Jobs, Robert Porcher Salary, E Bike Battery Wire Gauge, Essay On Music And Culture, Braina Pro Lifetime Crack,