The FSM certainly thinks that measuring cold is fine. It specifies measuring at 20-30C as a legitimate method for measuring the level, giving very exact levels at that temperature for different 722 transmissions, thereby taking account of the thermal contraction. If they recommend it, how is it not recommended??
Quote:
Originally Posted by whunter
Note: A fresh rebuild and/or fluid drain and fill, can give a false dipstick reading in certain under fill conditions = burn out clutch disc's. This is why I recommend measuring exactly how much is removed, and refilling the same volume.
There is significant thermal contraction at lower temperatures.
Checking cold ATF is NOT recommended, due in part to extreme thermal expansion-contraction.
On most transmissions the thermal expansion-contraction is a critical variable due to unique individual unit age/wear factors..
The only ATF level that is relevant is the operating temperature reading.
If there are NO transmission leaks, and the level is correct at operating temperature = the fluid level will remain acceptable (within operating range) for a ridiculous number of miles.
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