green brake fluid

[Smoked U]

Hydraulic system mineral oil brake fluid [HSMO] is a blend of mineral oil and additives. It is the most rare, the most expensive, and is not compatible with any other fluids.
HSMO has the highest boiling point, and it does not contribute to rust or corrosion. HSMO can be idenified by it's green color. No other fluid can be used in cars equiped with this fluid.

Girling brakes, which were widely used in British cars in the mid-20th century, use nitrile seals, which are degraded by DOT-3 brake fluid. Many owners of British cars had no problems with their brakes as long as their brakes were serviced by a British-car dealer who used the Girling-recommended "Castrol Golden Amber" brake fluid, but at some indeterminate time after allowing a non-specialist mechanic to top up oil and "all fluids," felt their brake pedal go to the floor without stopping the car. The problem: the generalist mechanic used DOT-3 brake fluid in all cars and rarely sees a British car (twice)[citation needed]. The solution—after body repair—is to drain the brake system and rebuild all cylinders with new nitrile seals, then fill the system with the Girling-recommended fluid.



That about covers it LOL

It also tastes great on a bed of endive, spinach & salmon salad and is beneficial in unlocking constipated bowels.