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A Closer Look at Bypass Oil Filtration

A Comprehensive Look at Bypass Filtration

AMSOIL Bypass Systems offer top-of-the-line protection

Bypass oil filtration features a secondary filter with the purpose of eliminating nearly all contaminants from engine oil. Bypass filters have high capacities and eliminate much smaller particles than full-flow filters. They reduce engine wear and increase oil volume, but their high efficiencies mean they also have higher restriction and must be used in conjunction with a full-flow filter.

How Bypass Filters Work

Bypass filters operate by filtering oil on a “partial-flow” basis. They draw approximately 10 percent of the oil pump’s capacity at any one time and trap the extremely small, wear-causing contaminants that full-flow filters can’t remove. Bypass filters have a high pressure differential, causing the oil to flow through them very slowly and allowing for the removal of smaller contaminants, including soot. It is called bypass filtration because the oil flows from the bypass filter back to the sump, bypassing the engine. This continual process eventually makes all the oil analytically clean, reduces long-term wear and can extend oil drain intervals.

AMSOIL Bypass Filtration Benefits

  • Significantly Extended Engine Life

The majority of engine wear is caused by particles in the 5-20 micron range. Because AMSOIL Ea® Bypass Filters effectively remove contaminants down to 2 microns, engines receive the ultimate in wear protection. Less engine wear keeps the engine in better condition, extending its life.

  • Efficient Small-Particle and Soot Removal

The high-efficiency Ea Bypass Filter element is 98.7 percent effective at removing particles down to 2 microns, helping extend engine life. It is also a very effective soot-removal device.

  • Reduced Maintenance Costs

AMSOIL Bypass Systems provide a dramatic increase in engine protection, helping avoid costly repairs associated with engine wear.

  • Improved Oil Cooling

By installing an additional filter, the engine system has the capacity to hold more oil. With increased oil capacity, the oil filtration system contains more fluid through which it can disperse heat from the engine. This allows the engine and the oil to run cooler.

  • Extended Drain Intervals

Ea Bypass Filters can help users extend their oil drain intervals. Make sure to use oil analysis when extending oil drain intervals.

Outstanding Protection at an Affordable Price – Smartest Passive Unit you can buy

Competing single-remote bypass systems designed for Ford*, GM* and RAM* turbodiesel vehicles range in price from $250 to more than $700, with an average largely over $450. Most AMSOIL Single-Remote and Dual-Remote Bypass Systems carry an MSRP below the market average.

Competing heavy-duty bypass systems range in price from $650 to more than $850. The premium-quality AMSOIL Heavy-Duty Bypass System (BMK30) and DUAL-GARD® Bypass System (BMK22) have MSRPs almost half the market average.

AMSOIL offers complete bypass systems for certain popular applications that include all components necessary for installation (including parts, hose, filters and installation instructions). We also offer universal bypass systems that can be customized with different additional parts to fit specific applications.

Easy Installation

AMSOIL Bypass Oil Filtration Systems are relatively easy to install and easy to maintain. Do-it-yourself installation instructions are provided.

Durable Construction

AMSOIL Bypass Systems and Ea Bypass Filters are built tough to withstand the most severe operating conditions.

Call us with questions, our best pricing or order online where you can also download the instructions. 

Synthetic Oil Filters vs Regular Oil Filters

Synthetic Oil Filters vs Regular Oil Filters

Early automobile engines didn’t use oil filters, or air filters for that matter. For this reason frequent oil changes were a must. Motor oil quality wasn’t really that important in those days, anyway. It was the discarded by-product of processes designed to create other products from crude oil, like fuel, benzene and other petrochemicals.

The first oil filters were simple, generally consisting of a screen placed at the oil pump intake in order to keep mice, cockroaches and other debris from getting churned inside the pistons. (OK, just checking to see if you’re paying attention.) It was, however, a fairly crude setup.

In 1923, a pair of American inventors, George Greenhalgh and Ernest Sweetland, filed a patent for a new kind of oil filter that they called the Purolator, which became a handle for “pure oil later.” The Purolator oil filter was the first oil filter invented specifically for cars, generating a whole new industry – the oil filtration aftermarket.

To many people, oil filters are a generic product. Price is the only factor considered when they choose a filter. But just as today’s engines have become increasingly sophisticated, so have many of today’s oil filters. They may look much the same on the outside, but what’s inside can make a big difference.

Oil filters are not created equal

A couple weeks ago I shared a lexicon of filter terms.

It’s true that some things are overpriced, like movie theater popcorn, but more often than not the other side of the coin is true: you get what you pay for. That is, quality costs more than going on the cheap. All kinds of sayings come to mind, like “Don’t be penny wise and pound foolish.” Cars cost a pretty penny these days, even used ones if you want something reliable, so I suggest thinking twice before going cheap on maintenance.

An oil filter’s job is to capture contaminants and hold them prisoner.

Let’s start with the filter media

As the oil circulates through the engine, it picks up contaminants. The filter’s assignment is to capture these contaminants and hold them prisoner, so to speak. Some of these contaminants come from the atmosphere, some from wear and some are byproducts of combustion.

The challenge for filter manufacturers is to use filter media that is porous enough to allow good oil flow, but not so impermeable that it blocks flow and causes oil starvation. It’s a big challenge, especially in racing applications, which is why so many manufacturers of auto aftermarket products are involved in racing. Racing pushes product performance to its limits, and manufacturers learn the stress points of engine components, lubricant capabilities and filters, among other things.

The four oil filter families

Filters come in four basic families.

  • Standard oil filters sold at most oil-change facilities
  • High-performance filters
  • Racing filters
  • Synthetic-media filters

AMSOIL Ea® Oil Filters feature advanced full-synthetic media that traps and holds a greater quantity of small, wear-producing contaminants compared to conventional filters. Because AMSOIL Signature Series Synthetic Motor Oil is designed for a longer drain interval – 25,000 miles/one year/700 hours (whichever comes first) – we recognized the need to offer filters capable of protecting for an extended service life while reducing wear.

Other areas where there can be a quality difference include the gaskets, the canister itself, the back-plate and the all-important anti-drainback valve. But the media itself is the heart of the filter’s effectiveness, or ineffectiveness. If you do a search and read forums on this topic, you’ll find stories about bunched-up material clogging oil passages and see photos of other horrors leading to a filter’s early demise. At one forum, I saw a photo where the filter looked like it had been twisted in a blender (the canister had been removed to reveal this inner destruction.) More startling, though, was that in the background was a fairly new Cadillac. Why would people go top drawer on a car and low-ball it with the filter?

All that to say that there are some pretty good reasons to choose a quality filter. There are already enough problems in the world. Why worry about your filters doing what they are supposed to do.

Find an AMSOIL Ea Oil Filter for My Vehicle