"Lo̶n̶g̶b̶o̶t̶t̶o̶m̶ ̶l̶e̶a̶f̶! Hope DOT 5.1 Brake Fluid! The finest p̶i̶p̶e̶-̶w̶e̶e̶d̶ brake fluid in South Farthing"

Dot 5.1 is compatible with Dot 4, but not Dot 5!

 

This one is great for all Hope brakes, most SRAM brakes, and others.

But don't go putting it in your Shimano, Magura, Tektro/TRP brakes! It'll mash them up good and proper.