NO, Break Fluid Only
use brake fluid
Yes you can. It is expensive and needs quite a bit of part switching from the transmission to the clutch, stick, but can be done.
If it's an automatic, it's probably a bad transmission (clutch, valve body or hydraulic pump). If it's a manual transmission it's probably a worn or damaged clutch.
Automatic transmission
Yes, there is a transmission in a 1990 Mazda RX7 convertible.
5.7 quarts for automatic transmission
according to a local dealer that model has no modulator valve on its automatic transmission sorry !
It takes automatic transmission fluid type mv i could not find this fluid aftermarket and got it staright from the Mazda dealer for around 6 dollars a litre
there isn't clutch oil only transmission and engine oil
You don't use clutch fluid for a manual transmission vehicle.
Could be a frozen clutch pack. Time for a transmission rebuild.
A 2009 Mazda 6 does come with the choice of automatic or manual transmission, however the prices of each are not the same, as manual is slightly more expensive.