2nd, do not make use of a unstable, chlorinated solvent or solvent-form flushing compound to scrub out the gearbox. Any solvent trapped within the voids in the reservoir will lead to corrosion. Eighth, when dealing with enclosed gearboxes or oiling devices that would not have a drain or circulating system, https://gearbox-oil-treatment53085.answerblogs.com/34362258/examine-this-report-on-gearbox-oil-treatment