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Message: <blockquote data-quote="oligokoko" data-source="post: 403727" data-attributes="member: 14920">wow, u guys really know ur stuff, esp astroboy. according to the figures of gear ratio, yes ZF is better but as from my POV, GM gbox is easier 2 maintain, faster to work with and less leaking issues.ZF is using the plastic sump, which u r recommended to replace the drain plug due to the material (high-temp resistance plastic) and the tightening torque (8Nm). trust me, most mech does not follow this tightening torque. if u exceed this tightening torque, it will probably damage the sump's thread and also the alan key hole to the drain plug. even the sump's screws tightening torques are a bit low (12Nm)GM uses the steel sump, higher tightening torque, better placement of drain and filler plug and also the filter is replaceable. but of course the ratio is abit on the high side.but im not saying which one is better, just sharing this info from my POV. on the issue of replacing the g/box oil, replacing it at 60k should b fine coz this is a normal g/box. if u r using a mini one, which uses CVT, then better change it sumwhere around 20k, just like what recommended by honda for their honda city. for me, on the 60k g/box interval, it is better for u guys to go for g/box oil flushing, which they will flush the remaining oil from the torque converter and also the g/box oil cooler + lines. it will cost more due to addition of 1-2 litres of g/box oil, but at least u have a peace mind knowing the whole g/box sys oil is clean. ohh, n ZF gbox oil is slightly expensive than d GM. they r using their own ZF oil normally the 516 (3 last part number) n GM is using ATF Dextron VI.</blockquote>

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