dont use this stuff...made my 84 250 unrideable. massive clutch slip on previously great clutch
something im concerned with in bottom end lube is wear protection..i want high levels of calcium, phosphorous, and zinc which are common antiwear agents. atf generally contains none of these, which explains i guess why i see more shavings running type f than other lubes. atf does work well with a clutch. im not sure what extreme pressure additives or antiwear agents are in hydraulic fluid.
those gears arent getting any more plentiful, especially the kick drive/idlers.
most motorcycle engine oils have good add packs and have jaso certification to play with clutches, although many times they are not cheap. the problem with our dirt bikes is we contaminate the oil before the oil is really wore out. moisture, shavings, dirt and hard use cause drains at low hours compared to streetbike or a automotive manual transmission/differential.
i have been running rotella t6 5w40 diesel oil. full synthetic, jaso compliant, stout wear additives, and fairly low cost compared to specific mc oil. it is a bit thick at 14.5 cst @100c, but i still have great shifting and clutch action. very little shavings on the drain plug at 6 hours of run time, compared to the porcupine that was always there with atf. not a scientific reading, but it is what it is.
something with a lower viscosity would be ideal i guess, closer to what husky calls for. i ran amsoil 10w30 mc oil for about 4 changes but it had more shavings and not as good shifting as the rotella. not to mention its double the cost..
if money were no object, i would for sure be running a redline product in the swede, as their products are second to none.