How exactly is an ATF different from a typical engine or gear oil ?
I realize its something do with pressure and hydraulics v/s friction. Is it supposed to be a "double duty" oil ? i.e. gear oil and hydrualic fluid in one ?
What function properties/characteristics are more desireable in an ATF as compared to oil ? Asked another way - What is most detrimental to an ATF - pressure ? heat ? friction ?
One more question -
Even though the transmission fluid is subject to the same kind of temperature variations as engine oil, i.e. very cold starting temps in winter to normal operating temp in summer. So why isn't grade range specified in an ATF ? Unless all kinds of ATFs fall in more or less the same grade ?
I realize its something do with pressure and hydraulics v/s friction. Is it supposed to be a "double duty" oil ? i.e. gear oil and hydrualic fluid in one ?
What function properties/characteristics are more desireable in an ATF as compared to oil ? Asked another way - What is most detrimental to an ATF - pressure ? heat ? friction ?
One more question -
Even though the transmission fluid is subject to the same kind of temperature variations as engine oil, i.e. very cold starting temps in winter to normal operating temp in summer. So why isn't grade range specified in an ATF ? Unless all kinds of ATFs fall in more or less the same grade ?