When you shop for a pitcher, faucet filter, or under-sink system, the box is usually plastered with badges that promise safer ...

Some aviation oil filters fall short of efficiency standards, but still protect engines-barely. Understand what yours really does. The post Oil Filter Testing appeared first on KITPLANES.

Unlock to see our ratings and compare products side by side a measure of how much the flow rate decreased, or time to filter increased, over the course of filter cartridge's lifespan. Certified to NSF ...