When a system is in bypass, contaminants are not being filtered out of the oil. This video is sponsored by FRAM.
Sometimes you go through all the documented testing steps for a problem and still can’t find the solution. When this happens, turning to your fellow techs is a great solution.
With oil life indicators pushing the average oil change past the 6,000-mile mark, it is not just the quality of the oil that’s improved, it is the quality of the filter, as well. Neglected oil change intervals can ruin the best engine oils and filters. As engine oil and the filter accumulate miles, they become contaminated with carbon, water and various acids, all of which are a byproduct of internal combustion that will form a film of black, gooey sludge on the interior parts of the engine.