Contaminants can enter your gearbox oil by vents or even the fill tube during checking/filling. Usually, having said that, contaminants are the result of usual use. The gearbox filter shields towards these contaminants which allows increase gearbox life. Nonetheless, inside filters are dearer than externals and it is way more https://filter-gearbox65207.blogdeazar.com/34260301/the-ultimate-guide-to-filter-gearbox