The best business which would be good for adding brake fluid would be Midas, Car X, Goodyear, Dealerships and you can also visit some mechanics that has there own shops.
As long as it is DOT3 brake fluid you are fine.
Brake fluid
It is not recommended to substitute brake fluid with any other substance. Brake fluid is a specialized hydraulic fluid that is essential for the proper functioning of a vehicle's braking system. Using any other fluid could compromise the safety and performance of the brakes. It is important to always use the manufacturer-recommended brake fluid for your vehicle.
It is not recommended to use brake cleaner as a starting fluid for engines. Brake cleaner is not designed for this purpose and can be dangerous if used incorrectly. It is best to use a proper starting fluid that is specifically designed for engines to avoid any potential risks or damage.
DOT 4 Standard
Dot 3 or Dot 4
It is not recommended to use DOT 3 brake fluid from an open container, as brake fluid can absorb moisture from the air, which can lead to reduced braking performance and potential damage to the braking system. Additionally, contaminants may enter the container, compromising the fluid's integrity. It's best to use brake fluid from a sealed container to ensure its quality and effectiveness.
If a Mazda MPV is leaking yellow fluid then it is possible that the fluid is brake fluid. It is best to take the car to a mechanic right away.
If you accidentally mix silicone brake fluid (such as DOT 5) with regular brake fluid (like DOT 3, 4, or 5.1), the best course of action is to completely flush the brake system. This ensures the incompatible fluids do not compromise braking performance. You should replace all brake fluid with the appropriate type for your vehicle and check for any potential damage to rubber components, as the mixture can cause corrosion or degradation. It's advisable to consult a professional mechanic for proper servicing.
Brake fluid is a type of hydraulic fluid with very specific properties. You would have to check the compatibility of the particular fluid with the components in your system. This would include the cylinders, seals, hoses, and any other internal components exposed to the fluid. The best thing is to use the exact fluid that the system manufacture specifies.
Most likely the brake fluid will corrode and eat-away the seals on your power steering system. Brake fluid has a mineral in it that the rubber seals of the PS system can't handle. If you drive it long enough you'll either get severe leaks, or potentially the pump will seize. Best advice is to drain the system, fill with proper PS fluid, run it, then drain again. Get clear fluid if you can so you can tell when the brake fluid is out. This will likely take a few bottles
The best answer is to ask your local Toyota dealer. The alternative answer would be to screw the cap off your tank in the engine bay that says brake fluid. The fluid on the stick should be a clear light brown. When you touch it the fluid should not be slippery, greasy, or discolored. If there is any sediment in there then change it right away and make sure to clean out the fluid reservoir. Also change your brake fluid every two years and flush out the brake lines for superior maintenance.