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Could you use automatic transmission fluid as 1986 Mazda b2000 clutch slave cylinder fluid?

No, you should not use automatic transmission fluid (ATF) as clutch slave cylinder fluid in your 1986 Mazda B2000. Clutch slave cylinders require brake fluid, which has a higher boiling point and lower viscosity than ATF. Using ATF in your clutch slave cylinder could lead to premature failure of the slave cylinder and/or master cylinder, as well as other problems with your vehicle's clutch system.

Brake fluid is specifically designed for use in hydraulic brake and clutch systems, where it acts as a hydraulic fluid to transmit force from the master cylinder to the slave cylinder. It has a high boiling point to ensure that it does not vaporize under the high temperatures generated by braking and clutching, and a low viscosity to ensure that it flows easily through the system's small passages.

ATF, on the other hand, is designed for use in automatic transmissions, where it acts as a lubricant, coolant, and hydraulic fluid. It has a lower boiling point and higher viscosity than brake fluid, which makes it unsuitable for use in clutch slave cylinders.

Using ATF in your clutch slave cylinder could cause several problems, including:

* Premature failure of the slave cylinder: ATF can damage the seals in the slave cylinder, causing it to leak and fail prematurely.

* Premature failure of the master cylinder: ATF can also damage the seals in the master cylinder, causing it to leak and fail prematurely.

* Other clutch problems: ATF can cause other problems with your vehicle's clutch system, such as slipping, chattering, or grabbing.

If you have accidentally put ATF in your clutch slave cylinder, it is important to flush the system with brake fluid as soon as possible to avoid causing any damage.