What is the difference between a 'micron rating' and 'beta ratio test' when referring to filters?
A filter’s micron rating refers to the smallest size contaminant the filter media can remove; however, there is no correlation between micron rating and a filter’s efficiency percentage.

The beta ratio test measures a filter’s efficiency for removing particles of a certain size by comparing the amount of contaminant particles before and after filtration. The number of particles after filtration is divided by the number before filtration. The resulting number is the beta ratio. AMSOIL filters have a minimum beta ratio of 75, meaning they are capable of removing 98.7% of contaminant particles of a stated size.
What is the service life of AMSOIL Ea® Oil Filters?
When used in conjunction with an AMSOIL extended-drain motor oil, Ea filters designated with product code EaO are guaranteed for up to 25,000 miles/one year in normal service and up to 15,000 miles/one year in severe service. Ea filters designated with product code Ea15K are guaranteed for up to 15,000 miles/one year, whichever comes first, regardless of driving conditions. It is recommended that all AMSOIL-brand oil filters be changed when the motor oil is changed. If motor oil other than AMSOIL is used, AMSOIL Oil Filters must be changed according to the vehicle manufacturer’s recommendations.
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AMSOIL Oil Filters

Ea Oil Filters
Ea Oil Filters
Ea Heavy Duty Oil Filters
Ea Heavy Duty Oil Filters
SDF88 Oil Filter
SDF88 Oil Filter
WIX Oil Filter
WIX Oil Filter
AMSOIL MANN-FILTERS Oil Filters
MANN-FILTERS Oil Filters
AMSOIL Donaldson Blue Oil Filters
Donaldson Blue Oil Filters
AMSOIL Donaldson P-Series Lube Filters
Donaldson P-Series Lube Filters
Is it okay to use non-AMSOIL brand filters with AMSOIL lubricants?

Yes. In gasoline applications, change the non-AMSOIL brand filter at one year/12,000 miles, whichever comes first, when using AMSOIL XL or Signature Series Motor Oil. In diesel applications, follow the OEM filter change interval.
AMSOIL Air and Coolant Filters
WIX Air Filter
WIX Air Filter
AMSOIL Ea Carbureted Engine Air Filters & Kits
AMSOIL Ea Carbureted Engine Air Filters & Kits
Ea Pre-Filters
Ea Pre-Filters
MANN-FILTERS Air Filters
MANN-FILTERS Air Filters
AMSOIL Donaldson Blue Heavy Duty Air Filters
AMSOIL Donaldson Blue Heavy Duty Air Filters
AMSOIL Donaldson P-Series Heavy Duty Air Filters
AMSOIL Donaldson P-Series Heavy Duty Air Filters
AMSOIL PowerCore®Filter For Ford 6.0L Diesel PowerStroke™
AMSOIL PowerCore®Filter For Ford 6.0L Diesel PowerStroke™
AMSOIL PowerCore Filter for GM 6.6L Duramax Diesel
AMSOIL PowerCore Filter for GM 6.6L Duramax Diesel
AMSOIL Ea Universal Air Induction Filters
AMSOIL Ea Universal Air Induction Filters
AMSOIL MANN-FILTERS Cabin Air Filters
AMSOIL MANN-FILTERS Cabin Air Filters
AMSOIL WIX Cabin Air Filters
AMSOIL WIX Cabin Air Filters
Can a larger size filter be used in place of what a vehicle calls for?

No. Filter recommendations by AMSOIL are based on specific equipment manufacturer requirements. Using a filter in an application it is not recommended for will void the filter’s limited AMSOIL warranty.
AMSOIL Motorcycle Filters
AMSOIL AMSOIL EaOM Motorcycle Oil Filters
AMSOIL AMSOIL EaOM Motorcycle Oil Filters
AMSOIL EaOM Chrome Motorcycle Oil Filters
AMSOIL EaOM Chrome Motorcycle Oil Filters
AMSOIL Fuel Filters
AMSOIL WIX Fuel Filters
AMSOIL WIX Fuel Filters
AMSOIL MANN-FILTERS Fuel Filters
AMSOIL MANN-FILTERS Fuel Filters
AMSOIL Fuel Filter for Ford 6.0L Diesel Powerstroke Truck Applications
AMSOIL Fuel Filter for Ford 6.0L Diesel Powerstroke Truck Applications
AMSOIL Donaldson P-Series Heavy Duty Fuel Filters
AMSOIL Donaldson P-Series Heavy Duty Fuel Filters
AMSOIL Donaldson P-Series Heavy Duty Fuel/Water Separator
AMSOIL Donaldson P-Series Heavy Duty Fuel/Water Separator
AMSOIL Transmission Filters and Coolant Filters
AMSOIL WIX Transmission Filter
AMSOIL WIX Transmission Filter
AMSOIL Donaldson P-Series Transmission Filters
AMSOIL Donaldson P-Series Transmission Filters
AMSOIL Donaldson P-Series Heavy Duty Coolant Filters
AMSOIL Donaldson P-Series Heavy Duty Coolant Filters
AMSOIL Hydraulic Filters and Crankcase Filters
AMSOIL WIX Automotive & Light Truck Hydraulic Filters
AMSOIL WIX Automotive & Light Truck Hydraulic Filters
AMSOIL Donaldson P-Series Heavy Duty Hydraulic Filters
AMSOIL Donaldson P-Series Heavy Duty Hydraulic Filters
AMSOIL WIX Crankcase Filter
AMSOIL WIX Crankcase Filter
AMSOIL Bypass Oil Filter Kits and Parts
AMSOIL Ea® Bypass Oil Filter
AMSOIL Ea® Bypass Oil Filter
AMSOIL Ford 6.0/6.4L Single-Remote Bypass System
AMSOIL Ford 6.0/6.4L Single-Remote Bypass System
AMSOIL GM 6.6L Single-Remote Bypass System
AMSOIL GM 6.6L Single-Remote Bypass System
AMSOIL Ford 6.7L Single-Remote Bypass System
AMSOIL Ford 6.7L Single-Remote Bypass System
AMSOIL Cummins 5.0/5.9/6.7L Single-Remote Bypass System
AMSOIL Cummins 5.0/5.9/6.7L Single-Remote Bypass System
AMSOIL Universal Single-Remote Bypass System
AMSOIL Universal Single-Remote Bypass System
AMSOIL Heavy-Duty Bypass System
AMSOIL Heavy-Duty Bypass System
AMSOIL Universal Dual Remote Bypass System
AMSOIL Universal Dual Remote Bypass System
AMSOIL Ford 7.3L Dual Remote Bypass System
AMSOIL Ford 7.3L Dual Remote Bypass System
AMSOIL GM 6.6L Dual Remote Bypass System
AMSOIL GM 6.6L Dual Remote Bypass System
AMSOIL Ford 6.7L Dual Remote Bypass System
AMSOIL Ford 6.7L Dual Remote Bypass System
AMSOIL DUAL-GARD Bypass System
AMSOIL DUAL-GARD Bypass System
AMSOIL Bypass Units Replacement Parts
AMSOIL Bypass Units Replacement Parts
How long can oil drains be extended when using a bypass filtration system?
AMSOIL Bypass Filters are designed to filter out fine particles; they are not meant to extend oil change intervals beyond original recommendations. However, when fine particles are filtered out of the motor oil, it may be possible to attain longer drain intervals. This should be determined by used oil analysis. In addition, the use of an AMSOIL bypass system may allow for the use of larger oil filters, which can increase filtering capacity.
AMSOIL Filter Wrenches
AMSOIL Filter Wrench (76 mm)
AMSOIL Filter Wrench (76 mm)
AMSOIL Filter Wrench (93 mm)
AMSOIL Filter Wrench (93 mm)
AMSOIL Filter Wrench (74 mm)
AMSOIL Filter Wrench (74 mm)
AMSOIL Filter Wrench (64 mm)
AMSOIL Filter Wrench (64 mm)
AMSOIL GA265 Filter Wrench (64 mm)
AMSOIL GA265 Filter Wrench (64 mm)
AMSOIL GA264 Filter Wrench (76 mm)
AMSOIL GA264 Filter Wrench (76 mm)
Accounts
AMSOIL Retail Account
AMSOIL Retail Account
AMSOIL Preferred Customer
AMSOIL Preferred Customer
AMSOIL Dealer Account
AMSOIL Dealer Account
AMSOIL Commercial Account
AMSOIL Commercial Account
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