ROLLED PAPER STYLE BYPASS FILTERS How These Types of Filters Work Oil flows axially (lengthwise) through the roll.  Typically these filters fall into two categories: 1.  High-quality rolled filter paper, wound on a central core, fit tightly into a cylindrical container. 2.  Commercially available toilet paper or paper towel rolls, inserted into a cylindrical container. Rolled Paper Filter Danger of Loading and Channeling Before & After Click Here For Larger Pop-Up Notice the passageways created by pressure along the side of the filter element. Passageways such as these allow oil to detour around the filter, thereby dramatically decreasing filter performance. Problems with Rolled Paper Style Bypass Filters Limited to "Surface" Filtration – an inability to trap particles of successively smaller size. Why OilGuard is Superior: OilGuard employs a method of both "surface" and "depth" filtration – achieved by winding a specially blended yarn of cotton and cellulose in a precise diagonal pattern around a perforated center tube. Loading – filter blockage from contaminants building up at the end of the roll which is first exposed to oil flow. Why OilGuard is Superior: The OilGuard element features many hundreds of identical, tapered (decreasing in size), spiral passageways that trap successively smaller particles as oil flows inward toward the center core. Poor Structural Integrity – lack of strength between layers exposing filters to channeling (large passageways created over time) which eliminates filter effectiveness. Why OilGuard is Superior: Structural Integrity – created and maintained by locking the combed fibers of the filter in place with each successive layer of winding. Surface and Depth Filtration Limited Loading OilGuard's Patented Design OilGuard Bypass Filter Elements EFS-60F, EPS-10F, EPS-20F Frequent Element Replacement and Costly Make-Up Oil Additions – bypass filtration systems featuring rolled paper filters require more frequent element changes than an OilGuard Bypass System. They are also much larger in size comparison to OilGuard, and in effect create an extra sump of oil that is changed every time the roll of paper is changed. This results in significant make-up oil requirements. Some models require 15-30% of the sump capacity of the engine in new make-up oil with each filter element change. In effect, each element change is a partial oil change. This constant dilution of the dirty oil with new clean oil produces good oil analysis reports and gives the illusion that the filter is working. The cost to the owner/operator is much higher than when using OilGuard. Why OilGuard is Superior: OilGuard allows you to truly save money by extending your drain interval without the need for significant make-up oil or added oil capacity in the filter housing. OilGuard works by filtering the oil and keeping it virtually contaminate free. The OilGuard housing was designed specifically to house the filter element, not as an extra oil sump. Our claims of cost savings are realized in the entirety, as the owner/operator can safely double their normal drain interval WITHOUT mid-duration element changes and make-up oil. In many cases, extension beyond doubling the interval can be safely achieved. System Cost – rolled filter bypass systems typically cost from the $300 to $550 range or more. Why OilGuard is Superior: No other bypass filtration system currently available can compare to OilGuard.  Filter Element Replacement Cost – Yes a roll of toilet paper or a roll of paper towels is cheaper than an OilGuard element. But these items were not designed or manufactured to be oil filters. You wouldn’t use a high quality OilGuard element to dry off your hands or take care of your bathroom business, and there is no reason why you should use a common roll of paper towels or toilet paper to filter your oil and protect your expensive engine. The filtration engineering and quality standards that go into every OilGuard filter made, are not even considered by the manufactures of toilet paper and paper towels. The paper quality is not intended to hold up to the combination of heat, pressure and loading of oil contamination. Why OilGuard is Superior: OilGuard provides a specifically engineered system of filtration and filter elements that were designed for the task of filtering oil to 1 micron. OilGuard's patented element is guaranteed to deliver both reliability and performance at a cost lower than many other types of bypass filters. Each size is priced dramatically less than elements used by other types of bypass filters. Problems with Commercially Available Toilet Paper or Paper Towel Rolls Bypass Filters This category is suseptible to each of the above problems. Additionally, tissue manufacturers DO NOT design these rolls with the necessary tension and dimensional control required to be a filter. Simply put, it is not recommended to utilize a product for something other than its original purpose. OIL REFINER (Heating Element Bypass Filters) How These Types of Filters Work Some bypass filters feature a heated chamber, also known as an evaporation chamber or plenum chamber. In this design, oil first travels through the filter’s medium, and then enters the evaporation chamber where it is heated to 190º-200º. Manufacturers of this type of system “theorize” that heating the oil to this level will “flash off” water and fuel in the oil. They represent the product as being an “oil refiner”.  This is simply not true. These filters are not oil refiners by any definition. The process of oil refining does not occur within any of these style filter products. Problems with Oil Refiner (Heating Element Bypass Filters) Increased Cost and Complexity – OilGuard believes that the heated chamber feature increases cost without increasing performance. Why? A.  200º is not a high enough temperature to boil-off water and/or coolant. B.  Oil temperatures climb to 190º-200º in any engine that is run for 30 minutes or longer. Why OilGuard is Superior: Less Cost – Equal or Superior Performance.  What most of the refiner style filters do achieve is good, efficient particulate removal in the range of 1-3 microns.  OilGuard accomplishes the same level of filtration at 1/3 the product cost. OilGuard believes in the power of simple yet elegant engineering.  Our patented design provides excellent performance without adding unnecessary complexity.  Oilguard does the job that needs to be done, without all the bells and whistles that increase cost without increasing performance. Electricity Required – to power the heating element. Why OilGuard is Superior: No electricity required. Mounting Restrictions – may apply to accommodate return oil flow by gravity. Why OilGuard is Superior: No Mounting Restrictions – unit is fully pressurized and can be mounted at any orientation. Limited Lifespan of Product – typically these units carry a 10-year warranty on the bypass filter system and a 5-year warranty on the filter’s heating element. Why OilGuard is Superior: Life-Time Warranty – on all OilGuard bypass filtration systems. CENTRIFUGE STYLE BYPASS FILTERS This type of device is really a centrifugal separator, not a filter. Centrifuge designs feature a non-pressurized housing that contains a rapidly spinning basket. The spinning basket is driven by a turbine that is powered by the pressurized oil flowing through the engine. Particles, via centrifugal force, are separated from the oil and flung to the wall of the basket where they adhere and build up. Problems with Centrifuge Style Bypass Filters Inability to Separate Water from Engine Oil. Why OilGuard is Superior: Condensation Removal – up to 100cc of condensation water. Loss of Filtration Efficiency – when operating at low engine speed or in stop-start driving conditions. Why OilGuard is Superior: Consistent Filtration – low engine speed or stop-start driving conditions do not decrease filtration performance. Cleaning of Rotating Components – disassembly required. Why OilGuard is Superior: No moving parts. Bearing and Seal Replacement – periodically required. Why OilGuard is Superior: No Bearing Replacement Required – only replacement required at service is simple changing of filter o-ring. Mounting Restrictions – may apply to accommodate return oil flow by gravity. Why OilGuard is Superior: No Mounting Restrictions – unit is fully pressurized and can be mounted at any orientation. Compressed Air Required – necessary to operate the flow control valve. Why OilGuard is Superior: No Compressed Air Required – unit does not contain a complex flow control valve. Design by Ace Computer Graphics © 2004 All rights reserved.