How can somebody "look" at a filter and oil then know which is better? It takes a test laboratory to find the facts. Look up the flow specs, percent efficiency and micron particle size. A filter built of sturdier components with more sq ft of filter area to reduce flow restriction. And finer pore filter material to catch small particles of dirt has to be better.
Manufactures can build a filter that will catch "all the dirt" but.......If the filter material is too restrictive from not having enough area. The bypass valve opens and dirty oil just circulates back to the engine unfiltered.
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Today's Featured Article - Engine Valves - Some Helpful Information - by Staff. Intake - On the intake stroke the piston moves doward, sucking in carburized fuel through the open intake valve. Exhaust valve is closed. Compression - With both the intake and exhaust valves closed, the pistons upward stroke compresses or squeezes the fuel into the combustion chamber. Firing - Ignited by the spark, the compressed fuel explodes and forces the piston downward on its power stroke. Intake and exhaust valves are closed. Exhaust valves and seats are exp
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