Oil filters are an important part of the proper operation of an engine - a quality oil filter is critical to engine longevity . While our choices are limited and budgets are tight, it's important to avoid falling for the false economy of a cheap oil filter.

The Oil Filter Study

The Oil Filter Study was an early web favorite, dissecting a variety of automotive oil filters, telling it like it is (was?), exposing all the dirty details about commercial oil filter quality or lack thereof.

Links

A recent version of The Oil Filter Study.

If you want to see the original page courtesy of Archive.org, see this link.

The study mentions these automotive filters:

• AC Delco Duraguard PF2
• AC Delco Ultraguard Gold PF2
• AMSOIL SDF15
• Baldwin B2
• Bosch
• Car And Driver SF-1A
• Champ
• Deutsch D539
• Deutsch D545
• Fram Extra Guard PH8A
• Fram Tough Guard TG8A
• Fram Double Guard DG8A
• Hard Driver HD01
• Mobil 1 M1-301
• Motorcraft FL-1A
• NAPA Gold 1515
• Pennzoil PZ-1
• PowerFlo SL30001
• ProLine PPL-30001
• Purolator Premium Plus L30001
• Purolator Premium Plus L390001
• Purolator Pure One PL30001
• Quaker State Q58A
• STP S-01
• Wix 51515

Don't forget to check out the related links section below for more links to related materials.

Newer information available?

Are there any newer sources of information regarding oil filter construction and quality? Are there any similar studies specific to motorcycle oil filters?

If so, leave a comment or contact us and let us know!