A Study on the Service Interval Performance of Borated and Non-Borated Glycol Ether Brake Fluids 2001-01-0947
There is a quite a wide range of brake fluid performance parameters affecting the lifetime of a brake fluid while in service in a car. However, in particular a high boiling point stands out as one of the most important product characteristics, in order to provide adequate protection against vapor lock in a car's brake system.
Using laboratory experiments and on the road car trials, we have investigated a number of key parameters that affect brake fluid service life. In particular we have compared the boiling performance of DOT 3 versus DOT 4 brake fluid types, i.e. non-borated versus borated glycol ether based types. The results lead us to the conclusion that DOT 4 compared to DOT 3 brake fluid offers consistently better boiling point performance; i.e. up to several years DOT 4 offers a considerable better margin against vapor lock.
Furthermore, comparing different types of DOT 4 fluids in various car trials, we obtained solid evidence that higher wet boiling point fluids offer the potential to increase the service interval, provided the brake system minimizes moisture ingestion.
Citation: Morsink, J., van Grieken, M., and de Jong, R., "A Study on the Service Interval Performance of Borated and Non-Borated Glycol Ether Brake Fluids," SAE Technical Paper 2001-01-0947, 2001, https://doi.org/10.4271/2001-01-0947. Download Citation
Author(s):
J. B. W. Morsink, M. G. F. M. van Grieken, R. de Jong
Affiliated:
Shell International Chemicals BV
Pages: 8
Event:
SAE 2001 World Congress
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Brake Technology, ABS/TCS, and Controlled Suspensions-SP-1576, SAE 2001 Transactions Journal of Passenger Cars - Mechanical Systems-V110-6
Related Topics:
Brake fluids
Braking systems
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