Anything but DOT 5...DOT 3 is what was in it at the factory, DOT 4 is better and Synthetic Brake Fluid is also good. DOT 5 is Silicone Brake Fluid; it was invented for the Army and they're the only ones who should use it.
Regular DOT3 brake fluid
It takes the same "DOT 3" type brake fluid most cars take.
regular DOT-3 fluid.
DOT 3 heavy duty works the best
Any SAE certified brake fluid can be used in a 1971 VW super beetle. Virtually all automobiles. Use the same type of brake fluid.
To add brake fluid to a 2000 VW Beetle, open the hood and locate the brake fluid reservoir, which is usually found near the back of the engine compartment on the driver's side. The reservoir is typically a translucent plastic container with a cap labeled "brake fluid." Unscrew the cap and add the appropriate type of brake fluid (usually DOT 4) until it reaches the recommended level marked on the reservoir. Be careful not to spill any fluid, as it can damage the car's paint.
DOT 4, according to the 1999 vw beetle manual I have. If you any other questions, contact your vw dealer or auto parts supply house.
Not sure what abs type brake fluid is. That vehicle uses Dot3 brake fluid.
brake fluid type and filling location
DOT 3 brake fluid
DOT 3 brake fluid
The recommended type of brake fluid to use with Shimano brake systems is mineral oil.