Formerly branded as AP 551.
AP Radi-CAL R1 racing brake fluid (formerly AP 550 / AP 551) exceeds DOT 3 specifications. It is formulated as a high-performance brake fluid that is acceptable for use on the street, yet can take the heat of competition in smaller cars. Radi-CAL R1 is compatible with all other DOT 3 and DOT 4 brake fluids and will not harm magnesium components.
To ensure that the fluid stays fresh during shipment, AP brake fluids are furnished in 1/2 liter (16.9 oz), easy-pour plastic bottles with double-sealed caps.
AP Radi-CAL R1 Specifications:
DOT Rating - 3
Dry Boiling Point - 516° F
Wet Boiling Point - 284° F*
Compatible with other fluids - DOT 3 & DOT 4
Container - 16.9 fluid ounce (500ml) plastic bottle
Compatible with magnesium components
* AP 550 / AP 551 was 304° F wet
