What does DOT 4 mean?
DOT 3 and DOT 4 brake fluids are glycol-based. They’re used in most modern cars and trucks, because they work with ABS brakes. DOT 4 has a higher boiling point than DOT 3. You can use DOT 4 where DOT 3 is called for, but not the reverse. Using DOT 3 in a DOT 4 brake risks boiling the brake fluid.
Where is DOT 3 used?
Product Description. Mobil Brake Fluid DOT 3 is a high performance hydraulic brake fluid for use in automotive disc, drum and anti-skid brake systems and clutch systems.
What is DOT 5 used for?
DOT 5 is silicone-based brake fluid and is used in most new cars today. DOT 5 is expensive, but it has a dry boiling point of 356 degrees. Newer brake rotors tend to be smaller and thinner, which means they disperse heat a lot less efficiently. Also, DOT 5 does not absorb any moisture.
What is a DOT 5?
DOT 5.1 Fluid DOT 5.1 is a mixture of borate ester and polyalkylene glycol ether, a silicone-based product. In comparison to other DOT braking fluids, 5.1 brake fluid can withstand higher temperatures without becoming sticky.
What is a DOT 4 brake fluid?
Brake Fluid DOT 4 is an efficient performance non- petroleum automotive brake fluid, designed for use in conventional hydraulic brakes and clutch systems, where DOT 4 fluids are recommended.
Is all DOT 3 brake fluid the same?
All DOT 3, 4 and 5.1 brake fluids are compatible with each other and with all systems. All polyethylene glycol-based fluids will not harm healthy rubber parts. Also, the additive packages will not damage or distort any rubber parts.
Can you mix DOT 3 brands?
It will not do any damage to your vehicle when mixing brands. The thing you should keep in mind is that you need to put the same DOTX in your car if you refill. DOT4 will perform a little better than DOT3 as it is more resistant agains higher temperatures.
What is DOT 4 brake fluid used for?
BRAKE FLUID DOT 4 is a state-of-the-art, high-performance, premium brake fluid of outstanding quality, with a high wet boiling point and thus extreme safety reserve against vapour lock. BRAKE FLUID DOT 4 is ideal for hydraulic disc brakes and drum brakes on motorcycles, cars, commercial vehicles and machines.
Can I mix DOT 3 and DOT 5?
Can You Mix DOT 5 and DOT 3? No, you can only mix DOT 5 brake fluid with more DOT 5 brake fluid. That’s because DOT 5 is the only brake fluid that is silicone-based; all the rest are glycol-based.
What happens if you use the wrong type of brake fluid?
Using the wrong fluid can cause poor lubrication, overheating, and possibly transmission failure. A mechanic might not be able to reverse the damage, even by flushing the transmission. Mistakenly adding motor oil or brake fluid can also destroy your transmission.
Is it OK to mix old and new brake fluid?
Since DOT 4 and 5.1 are both glycol-based brake fluids they are compatible with each other, which means they can be readily mixed without harming your brake system. It is important never to mistake DOT 5.1 (glycol-based) with DOT 5 which is silicone-based and should never be mixed with any other DOT fluid.