Testing and Inspection of Brake Fluid for 1996 4x4 Pickup L6-359
Brake Fluid: Testing and Inspection
NOTE: Swollen rubber parts indicate the presence of petroleum in the brake fluid.
To confirm that contamination exists, make the following test:
Place a small amount of the drained brake fluid into a small clear glass bottle.
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Separation of the fluid into distinct layers will indicate mineral oil content.
If there is any question of mineral oil content, drain system, flush thoroughly and replace all rubber parts.