Discover our extensive range of engine and hydraulic bypass units, meticulously crafted to elevate the filtration of both engine and hydraulic oils. Bypass oil filtration revolutionises traditional systems by seamlessly integrating supplementary filters. These secondary filters are strategically installed to eliminate virtually all contaminants from your oils.


By incorporating a bypass filter, you can effectively reduce engine wear and increase oil capacity. However, it's important to note that their superior effectiveness comes with higher flow restrictions. For optimal results, they should be used in conjunction with a full-flow filter, ensuring a comprehensive and efficient oil filtration system for your engines and hydraulic systems. Explore the unparalleled benefits of our Kleenoil bypass units for a superior oil filtration experience.

Elevate your hydraulic system's performance with our hydraulic bypass filter units, a superb addition for those seeking to extend oil change intervals and offer additional protection for system components. These units play a crucial role in recycling oil within your system components. These units play a crucial role in recycling oil within your system while effectively eliminating any water during their operation.

hydraulic bypass filtration unit

Through this procedure, hydraulic oils are maintained in a pristine and usable state, leading to a significant extension of the oil's lifespan before replacements become necessary. Optimise your hydraulic system's longevity and reliability with our hydraulic bypass filter units, ensuring prolonged oil durability and enhanced safeguarding for your valuable system components.



These bypass units effectively mitigate the hydraulic oil's operating pressure, ensuring smooth oil entry and circulation within the housing itself, without causing any damage or blowouts when re-entering the system. There is a pressure reduction valve integrated into these units which is for systems which have pressures of up to 3000psi, helping to maintain a consistent oil flow of approximately 4 litres per minute. This flow rate strikes a balance of being sufficiently low to have a minimal impact on most system pressures while still being high enough to ensure the oil remains in a condition akin to new.

Our range of engine bypass units are designed to be the ideal solution for those aiming to eliminate impurities such as particles, wear-related debris, and soot accumulation from engine oils. These units offer the advantage of extended oil change intervals, providing a safeguard against abrasive wear on components and preserving the usability of oils for an extended period. Opt for our engine bypass units to enhance the longevity of your engine, mitigate wear-related issues, and maintain the effectiveness of your oils over an extended lifespan.

Engine Bypass Filtration Units

Standard engine filters are usually constrained by their dimensions, making them significantly smaller when compared to their industrial counterparts. This reduced size leads to a diminished filter media surface area, which, in turn, allows for contaminants to circulate within your engine. Our assortment of bypass filters come in various sizes, allowing for installation of a diverse range of vehicles, from compact road vehicles and plant machinery to larger stationary engines.

Benefits of Bypass Oil Filtration Units

Bypass filter units provide a range of benefits to the systems or equipment they are fitted to.

It's essential to understand that water is a constant presence in oil, primarily due to the temperature variations within an engine's components. Moreover, when diesel fuel is utilised as a combustion source, it contains sulphur. Trace amounts of this fuel can bypass the piston rings, ending up in the oil. The combination of sulphur and water leads to the creation of sulfuric acids. By implementing the Kleenoil bypass filter system, you gain the ability to effectively eliminate water particles, reducing them to sizes of less than 0.05%. This, in turn, helps mitigate the formation of sulfuric acids, which are known to accelerate wear and tear on engine components.

It's worth noting that specific additives are intentionally introduced into lubricating oil to enhance its performance. These additives encompass a range of functionalities, such as dispersants, detergents, oxidation and rust inhibitors, pour-point depressants, metal deactivators, and anti-foaming and gelling agents. While the Kleenoil bypass filter system efficiently eliminates dirt, contaminants, wear metals, and water, it deliberately leaves these essential additives untouched, ensuring their continued effectiveness for ongoing usage.

Oil can prolong its service life by remaining clean, devoid of water, and preserving its essential additives. A thorough oil analysis can precisely determine the oil's remaining life. On average, the oil change interval has been extended up to tenfold when the Kleenoil bypass filter system is in place, as opposed to what it would typically be without it.

It's vital to recognise that oil is a finite resource with a limited supply, and its depletion is inevitable. By extending the operational lifespan of the oil, you can significantly decrease the quantity of oil purchases required. Additionally, the disposal of used, contaminated oil poses environmental risks, necessitating proper disposal methods to protect the environment, especially for future generations. By reducing the volume of fluid that needs disposal, you also mitigate the environmental strain. Furthermore, when complete fluid changes become necessary, there's always a risk of spills and ground contamination, and reducing the frequency of such full drains substantially lowers this risk.