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Carretera al Norte, Km. 6, Santa Cruz, Bolivia --- Telef: (3) 344-2233 Tele/Fax: (3) 342-6193

The oil filter must be as good as the oil you use. Many of the filters in the local market have relief valves that do not close, allowing dirty oil to circulate all the time. Some have 3 times the filter media to last longer.

Oil Filters - They are not all Equal

Fram (Brazil)

End Caps: Cardboard – very fragil

Length of element: 109 mm

Exterior diameter of element: 84 mm

Number of pleats: 59

Depth of pleats: 20.75 mm

Density of paper: 11.45 mg/cm ²

Total surface area of element: 2620 cm²

By-Pass Valve: Rubber

Comments: Oil can drain back during the night through a poor seal between the cardboard end caps and the seals .


	Metal tube in valve assemble sits against perforated tube in center of filter without sealing

Union (Asia)

End Caps: Steel

Length of element: 107 mm

Exterior diameter of element: 82 mm

Number of pleats: 72

Depth of pleats: 16.15 mm

Density of paper: 14.00 mg/cm ²

Total surface area of element: 2442 cm²

By-Pass Valve: Steel on Steel

Comments: Even though the By-Pass valve is metal on metal, there was a good seal on the sample checked.


Luber Finer (U.S.A) End Caps: Steel Length of element: 101 mm Exterior diameter of element: 83.40 mm Number of pleats: 47 Depth of pleats: 20.20 mm Density of paper: 14.37 mg/cm ² Total surface area of element: 1880 cm² Tipo de válvula de alivio de presión: Steel on Steel Comments: The rubber By-Pass valve sealed well against the steel end cap

	Mann (Brazil) End Caps: Steel Length of element: 123 mm Exterior diameter of element: 84.20 mm Number of pleats: 60 Depth of pleats: 19.50 mm Density of paper: 11.45 mg/cm ² Total surface area of element: 2831 cm² By-Pass Valve: Steel on Steel Comments: The rubber By-Pass valve sealed very well against the metal end cap. Has the most the surface area of all the filters checked.

		JHF (Corea) End Caps: Steel Length of element: 112 mm Exterior diameter of element: 84.50 mm Number of pleats: 49 Depth of pleats: 16.15 mm Density of paper: 12.66 mg/cm ² Total surface area of element: 1741 cm² By-Pass Valve: Steel on Steel Comments: Even though the By-Pass valve is metal on metal, there was a good seal on the sample checked.

Tecfil (Brazil)

End Caps: Steel

Length of element: 117 mm

Exterior diameter of element: 87.00 mm

Number of pleats: 66

Depth of pleats: 18.63 mm

Density of paper: 11.45 mg/cm ²

Total surface area of element: 1741 cm²

By-Pass Valve: Steel on Steel on Rubber

Comments: Even though the By-Pass valve is metal on metal, there was a good seal on the sample checked.

Fil (Korea) (Label says Toyota)

End Caps: Steel

Length of element: 90.00 mm

Exterior diameter of element: 71.50 mm

Number of pleats: 35

Depth of pleats: 15.00 mm

Density of paper: 14.44 mg/cm ²

Total surface area of element: 920 cm²

By-Pass Valve: Steel on Steel

Comments: Metal on metal By-Pass valve. In the 3 filters cut open, none of the by-pass valves sealed properly. This leaves dirty oil circulating around the engine at all times.

The element in this filter is used in various filters made by this company, sold under different names, painted with different car company names. Often the only thing that varies is the length of the spring.

Even though the case is the same size as the other filters, this filter has about 30% of the filter media as the best in the group.

Anti-Drain valve had rough edges. Looks hand-cut.


	Poorly formed by-pass valves in all 3 samples.


Fil (Korea) End Caps: Steel Length of element: 90.00 mm Exterior diameter of element: 71.50 mm Number of pleats: 35 Depth of pleats: 15.00 mm Density of paper: 14.44 mg/cm ² Total surface area of element: 920 cm² By-Pass Valve: Steel on Steel Comments: Metal on metal By-Pass valve. In the 3 filters cut open, none of the by-pass valves sealed properly. This leaves dirty oil circulating around the engine at all times. The element in this filter is used in various filters made by this company, sold under different names, painted with different car company names. Often the only thing that varies is the length of the spring. Even though the case is the same size as the other filters, this filter has about 30% of the filter media as the best in the group. Anti-Drain valve had rough edges. Looks hand-cut.

	Fil (Korea) (Label says FRAM) End Caps: Steel Length of element: 90.00 mm Exterior diameter of element: 80.0 mm Number of pleats: 39 Depth of pleats: 10.40 mm Density of paper: 14.44 mg/cm ² Total surface area of element: 722 cm² By-Pass Valve: Steel on Steel Comments: Metal on metal By-Pass valve. In the 3 filters cut open, none of the by-pass valves sealed properly. This leaves dirty oil circulating around the engine at all times. The element in this filter is smaller than ones previously opened and used in various filters made by this company, sold under different names, painted with different car company names. Often the only thing that varies is the length of the spring. Even though the case is the same size as the other filters, this filter has about 25% of the filter media as the best in the group.

		FDP (Bolivia) End Caps: Steel Length of element: 110.00 mm Exterior diameter of element: 81.60 mm Number of pleats: 53 Depth of pleats: 19.00 mm Density of paper: 12.18 mg/cm ² Total surface area of element: 2175 cm² By-Pass Valve: Steel on Steel Comments: Even though the By-Pass valve is metal on metal, there was a good seal on the sample checked.

			LYS (Peru) End Caps: Steel Length of element: 83.00 mm Exterior diameter of element: 82.0 mm Number of pleats: 45 Depth of pleats: 13.40 mm Density of paper: ____ mg/cm ² Total surface area of element 1000 cm² By-Pass Valve: Steel on Steel Comments: The metal to metal By-Pass valve did NOT seal on the filter checked.

			Toyota (Denso) (Japon) End Caps: Steel Length of element: 95.00 mm Exterior diameter of element: 81.0 mm Number of pleats: 39 Depth of pleats: 16.10 mm Density of paper: ____ mg/cm ² Total surface area of element: 1193 cm² By-Pass Valve: Steel on Steel Comments: Even though the By-Pass valve is metal on metal, there was a good seal on the sample checked.

According to the cross-reference books, all of these filters is the equivalent of a PH 8-A


	Note: This study was done in Santa Santa Cruz, Bolivia in 2001 and 2002 with filters bought at retail outlets. It is not intended to be a scientific study. In general only one filter was purchased and opened for each brand. The measurements are approximate. We recommend that the consumer take care in selecting oil filters.