kiev wrote:Any Standard Pressure (i.e. not intended for Extreme Pressure) mineral oil based ATF with class III viscosity would work fine, e.g. Mercon III, or for example
Valvoline maxlife ATF,
Is an ATF the right thing to use in what is essentially a single speed manual transmission and differential ?
The properties of a typical ATF - which is designed to work with wet friction clutches, a torque converter, and act as a high pressure hydraulic fluid for a valve control block are not even remotely similar to the properties of a typical 75w-90 manual gearbox oil, which is much, much thicker, primarily due to there being no pumped oil flow in most manual gearboxes. (So the oil has to be sticky enough to cling to the gears)
Not saying you're wrong, but I find it an odd choice if they did use a standard, thin ATF fluid in this application...