What is the Difference Between DOT 3 and DOT 4 Brake Fluid?
Updated 05/01/2024 | Published 04/29/2024
Question:
DeeMaxx brakes show to use DOT 4…. Didn’t see it till after DOT 3 was added and bled.. what’s the difference between DOT 3 and DOT 4?
asked by: Joe
0
Expert Reply:
DOT 4 brake fluid is going to have a higher boiling point of 446 degrees Fahrenheit where DOT 3 has a boiling point of only 401 degrees Fahrenheit. While there are some who do say these are compatible with each other it is never recommended to use DOT 3 in a system that specifies DOT 4 as it could more easily boil over.
expert reply by:
Bud M
0
Product Page this Question was Asked From
DeeMaxx Alpha G1000 Electric Over Hydraulic Actuator for Drum Brakes - 1,000 psi
- Brake Actuator
- Electric-Hydraulic Brake Actuator
- Boat Trailer
- Travel Trailer
- Drum Brakes
- DeeMaxx
more information >
Continue Researching
- Search Results: electric~hydraulic brake actuator brake actuator
- Search Results: ez latch
- Search Results: t4844100
- Q&A: Disc Brake Set-Up for 2018 Pratt Deck Trailer With Tandem 7,000 Pound Axles, 5/8" Studs
- Search Results: 195 8 lug wheel
- Video: All About the Kodiak Disc Brakes
- Video: A Closer Look at the Hydrastar Marine Electric Over Hydraulic Actuator for Disc Brakes
- Q&A: Will Kodiak 8k Disc Brakes for AL-KO Axle Fit etrailer Axle
- Shop: DeeMaxx Alpha G1000 Electric Over Hydraulic Actuator for Drum Brakes - 1,000 psi
- Article: Parts Needed to Add Electric Drum Brakes to a Trailer
- Article: Towing a Trailer? Let's Talk About Brake Controllers
- Article: Parts Needed to Add Hydraulic Drum Brakes to a Trailer
- Shop: Hydrastar Electric Over Hydraulic Actuator for Disc Brakes - 1,600 psi
- Q&A: Correct Pressure for Hydrastar EOH Actuator on 2013 Big Tex Tandem Axle Trailer With Disc Brakes
- Q&A: How Much Pressure Does an Electric Over Hydraulic Trailer Brake Actuator Put Out
- Q&A: Do I Need an Electric Brake Controller to Tow a Trailer with Brakes if My Truck Has a Factory 7-Way
- Video: All About the Grease Seal
- Video: Review of DeeMaxx Brake Actuator - Electric-Hydraulic Brake Actuator - DE97SR
- Shop: Demco Channel Tongue Trailer Coupler - eZ-Latch - Zinc - 2" Ball - Bolt On - 7,000 lbs
- Shop: Hub-Piloted Solid Center Wheel w -0.5" Offset - 17-1/2" x 6-3/4" - 8 on 6-1/2 - Black
- Shop: Americana Modular Wheel w/ -0.5 Offset - 17-1/2" x 6-3/4" Rim - 8 on 6-1/2 - Silver
- Shop: Demco Hydraulic Brake Actuator - Drum - Zinc - 2" Ball - 7,000 lbs
- Shop: Hydrastar Marine Electric Over Hydraulic Actuator for Disc Brakes - 1,600 psi
- Article: Replacing the Bearing, Races and Seals on a Trailer Hub
- Q&A: Correct Torque Rating for a Trailer Wheel Spindle Nut
- Q&A: Proper Way to Tighten Trailer Spindle of Castle Nut
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Article: Titan Hydraulic Trailer Parts