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Read articles →An owner who ran his 2022 Bobcat CT5555 to 400 hours, drained the hydraulic/hydrostatic oil, and sent it to a lab for analysis shares the actual results. The video walks through elevated iron (3x average), copper (4x average), and borderline insolubles readings, then reasons through possible filter-micron causes. Most useful to CT5555 owners wondering whether to stick with factory change intervals or go shorter.
Posted by the Gaining Ground channel, presenting as a hands-on owner sharing results from their own machine with no evident commercial affiliation.
The book calls out for the complete drain and refill oil change interval at 400 hours on the CT5555.
Iron was about three times the average, copper about four times the average, and insolubles were right at the limit, the most concerning finding.
The owner says he would not extend intervals given where the insolubles are at, and plans to change hydraulic oil earlier on any future new tractor.
The hydrostat filter is 11 micron, but the hydraulic filter micron rating is unknown, which may explain the elevated insolubles reading.
