View Single Post
Old 06-22-2009, 08:39 AM   #8 (permalink)
waydui
GR8 SCAPE
 
waydui's Avatar
 
Join Date: Jun 2005
Location: Kirtland, Ohio
Posts: 1,182
Quote:
Originally Posted by saudio View Post
Thanks. Very helpful.

So the same fluid can be both DOT3 and DOT4. That's interesting.
The only real difference between DOT 3 and DOT 4 brake fluid is the boiling point. All brake fluids must meet FMVSS116 minimum boiling points specification. DOT 4 is also less hygroscopic (less affinity for moisture).

FWIW, DOT 3 boiling point is 401 degrees F. DOT 4 is 446 degrees F.

Regards,
Wayne
__________________
_______________________
'05 Elise Magnetic Blue, Black, Touring, Hard Top, Star Shield, Stage II Exhaust, Arqray decat pipe, S2 Front Splitter (UK), Sector 111 Rear Tow Hook, Driving Lights, De-Snorkled, K&N Air Filter, Shift-I System, LSS Dampers & Springs, Sector 111 V-Bar, Schroth Profi II 5 point harness, Exige S Probax seats, 1/4 turn undertray screws, Stealth bulbs, BWR SC with PES tune, Innovative engine mounts, SS brake lines.
waydui is offline   Reply With Quote