Page 22 - WHITE BOOK

It is apparent the sodium, potassium and the phosphorus are sacrificial additives. This is
surmised because they correlate and generally decrease as mileage increases Graph #4). interesting to note that as these additives decrease the copper generally decreases (Graph#5).
It is
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Additive Levels Data Sorted by Mileage
K/ Miles
Potassium
Phosphorus
Sodium
GRAPH #4
y axis = parts per million of indicated element
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Copper vs. Sodium Sorted by Mileage
K / Miles
Copper ppm
Sodium ppm
Linear (Copper ppm) Linear (Sodium ppm)
GRAPH # 5
y axis = parts per million of indicated element
Radial Planar Chromatography (RPC): Using Radial Planar Chromatography (RPC) analysis it is demonstrated that clean, good brake fluid results in a single uniform phase once the tested fluidhasbeenallowedtodevelop. Thiswouldremaintrueforanybrakefluid. Contaminationof the sampled brake fluids shows discoloration and non-homogenous separation (See RPC Images).
Particulate contamination in the fluid forms rings in the RPC analysis. This is due to the depositionofparticlesastheypercolatethroughthesubstrate. Iftheparticlesareallfromasingle 101 Corporate Place - 6 -
Vallejo, CA 94590 800-645-5227 www.Herguth.com
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ppm
ppm