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Oil Selection & Filter Lookup Guide
 
 

AMSOIL Dual-Gard By-Pass Oil Filtration System

 

The AMSOIL Dual-Gard By-Pass Oil Filtration System links two AMSOIL By-Pass Filter Elements together for engines with sump capacities over 20 quarts. Allows fast and simple servicing with spin-on elements.

Wear tests have shown particles of contamination in the sub-20-micron range are most harmful to rings and bearings. Most trucks are sold with a full-flow filter as their only oil cleansing unit. A study by the Milwaukee School of Engineering determined the filtering efficiency of four top selling full-flow filters compared with a BE-90 AMSOIL Spin-On By-Pass Filter.

Versatility:
Accommodates any two AMSOIL Spin-On By-Pass Filter Elements. Their unique internal flow director and follower spring system provide a nonchanneling filter media.

Convenience:
Elements spin on and off for fast, neat filter changes.

Protection:
The stacked disc type by-pass filter has been shown to reduce piston ring and rod/main bearing wear 75% to 91% (Society of Automotive Engineers paper 881826).

By-Pass Safety:
A metering orifice inside the mount controls oil flow so that it never draws more than 10% of the oil pump's capacity. At an engine speed of 45 mph, the AMSOIL DUAL-GARD By-Pass Filter cleans all of the oil in the system every 5-10 minutes (depending on engine RPM, sump size, and oil pump ratio).

The DUAL-GARD Mounting Kit:
The BMK-12 contains a mount, mounting hardward, a restriction fitting, and two 3/4" - 16 to 1/4" J.I.C. fittings. Complete installation instructions are included along with an additional parts list of plumbing hose and fittings available from seperately from AMSOIL. Spin-on filter elements, available in three sizes, should be purchased seperately in pairs based on sump size or available room in the engine compartment. The following is merely a guide, since the large the element used, the less frequently it will need to be changed.

  • For a crankcase sump of 15 to 18 quarts use 2 BE-90 filter elements.
  • For a crankcase sump of 15 to 30 quarts use 2 BE-100 filter elements.
  • For a crankcase sump of 15 to 42 quarts use 2 BE-110 filter elements

Your AMSOIL By-Pass Filters will last twice as long as your regular engine filter, so change them half as often.

AMSOIL By-Pass Filter Replacement Chart
Type of Unit Stock Number Size (Approx.) Additional Oil Needed Crankcase Capacity Applications
SINGLE SPIN-ON ELEMENT

(Used with BMK-11 or any DUAL REMOTE SYSTEM)

EaBP-90 Diam. = 4.5 in.
Height = 6 in.
With Mnt. = 8 in.
1 qt. up to 9 qt. Pleasure Vehicles, Light Trucks and Smaller Commercial Applications
EaBP-100 Diam. = 4.5 in.
Height = 8 in.
With Mnt. = 10 in.
1.5 qt. up to 15 qt.
EaBP-110 Diam. = 4.5 in.
Height = 10 in.
With Mnt. = 12 in.
2 qt. up to 21 qt.
DUAL SPIN-ON ELEMENT

(Used with BMK-12 DUAL-GUARD)

(2) EaBP-90's Diam. = 5 in.
Height = 9.5 in.
With Mnt. = 8 in.
2 qt. 15 to 18 qt. Large Trucks, Construction, Farm and Industrial Equipment

(minimum sump capacity = 15 qt.)

(2) EaBP-100's Diam. = 5 in.
Height = 9.5 in.
With Mnt. = 10 in.
3 qt. 15 to 30 qt.
(2) EaBP-110's Diam. = 5 in.
Height = 9.5 in.
With Mnt. = 12 in.
4 qt. 15 to 42 qt.
Normal Service Life: When used in conjunction with AMSOIL motor oil and an EaO or Donaldson Endurance filter, the EaBP should be changed every other full flow filter change up to 60,000 miles. When used with other brands of motor oil or full flow filters, the EaBP filter should be changed every other full flow filter change. AMSOIL recommends using oil analysis when extending oil drain intervals.

 

APPLICATIONS

Mount

Filter (Order separately unless noted)

BMK-11

Any size AMSOIL Spin-On By-Pass Filter Element

BMK-13

Any size AMSOIL Spin-On By-Pass Filter Element

BMK-15Ea (complete with filters)

EaO-26 and EaBP-100 (complete with filters)
The BMK-15Ea Dual Remote Filtration System is not recommended for 2004 and newer Dodge pickups equipped with Cummins 5.9L diesel engines. AMSOIL is recommending the BMK-11 for these applications. AMSOIL still recommends the BMK-15Ea for 2003 and older Dodge pickups equipped with this engine.

BMK-16Ea (complete with filters)
International Diesels

EaO-26 and EaBP-100 (complete with filters)

BMK-17Ea (complete with filters)
Duramax Diesels (in GM Pick-ups)

EaO-26 and EaBP-100 (complete with filters)

Vehicles with sump capacities greater 15 qts.

Mount

Filter

BMK-12 Dual Guard

Any size AMSOIL Spin-On By-Pass (mount requires 2 filters)

 
 
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