Profile: Trico Mfg. Corp. specializes in filtration systems. They are designed to filter high-viscosity fluids associated mainly with gear oils and filtering oil. We offer hand-held system and portable filter cart system. Our watchdog oil dryer is a passive drying system designed for bearing housings and other applications. Constant level oilers are designed to maintain a predetermined oil level in a sump, which is necessary for proper lubrication.