Quote:
Originally Posted by Thomas ZR-1
You should use DOT3, DOT4 and 5 are chemical more aggressive to the rubber seals in the brake system (rubber swelling).
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"Thomas ZR-1", are you able to offer some facts to support the statement that DOT4 and DOT5 brake fluids are "chemical (sic) more aggressive" such that they cause swelling of rubber seals?
Also, DOT5 fluid is silicone-based and is an excellent choice for old "non-ABS" classic cars where preventing corrosion inside the brake system is the prime concern and braking performance is secondary.
DO NOT use DOT5 silicon-based brake fluid in any vehicle with ABS. The viscosity of DOT5 fluids is
incompatible with the rapid fluid movement required for an ABS to operate properly.