Getting the correct hydraulic fork oil / fluid is vital not only for the health of your forks delicate internals and seals, but also massively effects your ride comfort.
If your manufacturer recommends a 20w Heavy hydraulic fork fluid / oil then it's because that oil offers the correct viscosity and damping, which effects the resistance within the flow of oil inside your fork... basically it boils down to, the heavier the weight or higher viscosity, the higher movement resistance the oil has. It is commonly understood the heavier or higher viscosity a oil has the more stable and stiff the fork becomes, however the weight of your bike and the way in which your bike is used really muddies that theory, fork weight can sometimes just come down to personal preference.
If you're unsure what fork oil grade / weight, or have a modified or unique Vehicle why not ask the Opie Experts for a Custom recommendation.
20w Fork Oil - Heavy Weight
20w Fork Oil - Heavy Weight: Purchase online from Opie Oils
Pick a product or use the filter to narrow down your selection
Jump to Page...
Castrol Classic XL 20W-50 is a conventional multigrade engine oil of good all round performance, formulated with high quality mineral oils plus selected additives, ideally suited to older technology and classic car and classic motorcycle engines.
The widely recommended Silkolene Comp 4 10W-40 viscosity range, ensures reliable winter and summer use with easy starting and rapid warm up, while providing vital anti-wear protection during the cold start phase.
Your Opinion Counts..
“Excellence from start to end”
Never miss a bargain, sign up to our news & deal emails.
Hundreds of customers contact us on a daily basis to discuss their oil needs and applications prior to purchase. We don’t just sell oils; we know oils and would encourage anyone to contact us to discuss any questions they may have. If you would like an expert recommendation then simply complete our oil recommendation form and one of our resident experts will aim to get your bespoke oil recommendation to you within 24 hours.
Enter basic information about your vehicle and our product lookup will provide you with the correct specification and amount of engine oil together with an OEM Spec & approved oil filter for a full service. Alternatively you can select just the engine oil or a 1 litre top up kit. In the near future this service will be improved so you will be able to source all fluids and essential service parts for your vehicle.
(Useful Technical Information)
Within the automotive industry there is a lot of myths and confusion about certain elements of lubrication, fluids and oil. In order to cover, in detail, some of the most common things that are discussed by Opie Oils Technical Experts we have produced a collection of Technical PDF Downloads, some that Opie have produced and some sourced by experts within the trade that have given consent for us to share.