DOT 4 brake fluid – Auto Oil And Fluid

DOT 4 brake fluid: Valvoline Brake & Clutch Fluid DOT 4 is a excessive efficiency non-mineral brake fluid. The lubricant relies on glycol ethers and is greatest suited to hydraulic brake programs. This explicit fluid is characterised by a excessive boiling level, which signifies that it’s secure for all supplies throughout the brake system. Its clever components additionally permits it to supply the best ranges of safety in the course of the journey.


Valvoline Brake & Clutch Fluid DOT 4 is formulated to be used with all disc and drum brake programs, in addition to anti-skid (ABS) functions. As such, it’s appropriate for passenger vehicles, vans and different automobiles that require a DOT 4 efficiency stage, no matter typical driving circumstances. 


Brake & Clutch Fluid DOT 4 is a top quality brake fluid that provides superior efficiency and system safety. Extra exactly, its advantages embrace:

Glorious viscosity-temperature properties in a really excessive and low temperature vary

Steady viscosity over an extended interval

Glorious efficiency underneath numerous driving circumstances

Water absorption properties that decrease the boiling level of the fluid, thereby that maximizes the efficiency of the automobile’s brakes.

Working Directions

Brake and clutch fluids, normally, must be checked, drained and refilled each two years or each 40,000 kilometers to optimize brake efficiency and shield system parts. 

Valvoline Brake & Clutch Fluid DOT 4 must be utilized in its concentrated type. After use, it is very important seal the container to forestall the fluid from absorbing moisture from the surroundings, which might scale back its helpful life. In case you spill it on every other a part of the automobile, take away it instantly with out rubbing to keep away from damaging the paint.

Brake & Clutch Liquid DOT 4 can be utilized together with different brake fluids. Nonetheless, it is very important combine them solely with borate ester or glycol primarily based brake fluids, on account of related specs. 

What’s the distinction between DOT 4 and DOT 5.1 brake fluid?

DOT 4 and DOT 5.1 are glycol-based brake fluids and are broadly used within the automotive and bicycle industries. They’re managed by requirements set by the Division of Transportation (DOT), therefore the identify.

The primary distinction between these two brake fluids is of their boiling factors. A part of the requirements that DOT fluid producers should meet are minimal dry and moist boiling factors. These are the minimal temperatures your brake fluid should function at earlier than the brake fluid begins to boil, which might result in full brake failure.

Bear in mind, these are solely the minimal requirements. Brake fluid producers can and infrequently do enhance these numbers, and it’s potential to search out DOT 4 brake fluid with the next boiling level than some DOT 5.1 fluids in the marketplace.

Since DOT 4 and 5.1 are glycol-based brake fluids, they’re appropriate with one another, which suggests they are often simply blended with out damaging the brake system. You will need to by no means confuse DOT 5.1 (glycol primarily based) with DOT 5 which is silicone primarily based and will by no means be blended with every other DOT fluid.

Right here you may see that the silicone primarily based DOT 5 is the odd one out and isn’t appropriate with every other DOT brake fluid. When mixing DOT 3, 4 and 5.1 brake fluids, assuming it’s contemporary fluid, the worst that may occur is a drop within the boiling level of all of the fluid.

Some brake producers, similar to Hayes and Formulation, pre-fill their brakes with DOT 4 brake fluid from the manufacturing facility. Others, together with Avid and Hope, select to make use of DOT 5.1 on their brakes. Many riders with DOT 4 of their brakes will select to bleed with DOT 5.1 to learn from the upper boiling level and improved warmth resistance.

DOT 4 Brake Fluid: Environment friendly Efficiency Automotive Brake Fluid

DOT 4 Brake Fluid is an environment friendly efficiency, non-petroleum automotive brake fluid designed to be used in typical hydraulic brake and clutch programs, the place fluids are really helpful. DOT 4.

Brake Fluid DOT 4 is a posh mix of polyglycol ethers, glycol ether borate esters, and polyglycols with further corrosion and oxidation inhibitors.

Buyer Advantages

  • Increased boiling level (260°C) than different DOT 4 brake fluids, and in-service boiling level retention helps stop high-temperature vapor formation, sustaining braking efficiency longer longer than DOT 3 merchandise
  • Contributes an extra security margin in opposition to vapor lock when in comparison with decrease specification fluids
  • Buffered formulation maintains pH stage within the alkaline vary, serving to to guard metal parts and forged iron
  • Inhibitors contribute to corrosion safety of all kinds of metals, together with aluminum, brass, copper, zinc, and tin
  • Seal swelling and lubricity traits assist stop fluid leakage and scale back element put on
  • Thermal and oxidation stability helps resist fluid degradation, sustaining key efficiency traits all through its helpful life. fluid il
  • Appropriate for a variety of auto sorts, decreasing inventories


DOT 4 brake fluid meets acknowledged requirements for clutch and brake fluids as required by main motorized vehicle producers producers

  • All programs hydraulically operated motorized vehicle braking programs (drum and disc sorts) for which a DOT 4, SAE J1704, or ISO 4925 Class 4 fluid is specified
  • Service substitute or fill of braking programs that require DOT 3, SAE J1703, or ISO 4925 Class 3 fluids
  • Automobiles with anti-lock braking programs (ABS)
  • Hydraulic clutch programs requiring typical fluids
  • Passenger vehicles, business trucking, off-road automobiles, farm tractors, and bikes DOT 4 brake fluid is appropriate with different manufacturers DOT 4/DOT 3 Brake Fluid. DOT 4 Brake

Fluid shouldn’t be utilized in programs designed for low fluids. mineral oil (LHM), for instance, sure Citroën fashions, or the place DOT 5 silicone fluids are really helpful.


brake and clutch fluid is a Excessive efficiency petroleum free automotive brake system for typical hydraulic brake and clutch programs in vehicles, vans and bikes. Brake fluid retains the next boiling level, minimizes vapor formation at excessive temperatures, and maintains braking efficiency for longer intervals of time in comparison with its DOT 3 sort predecessor. 

Designed to forestall corrosion, oxidation, and management Seal swelling, Caltex Brake and Clutch Fluid DOT 4 combines superior formulation applied sciences that assist retain the important thing efficiency of automobiles’ brake programs over the long run. 

Each shopper must cowl the necessities with the utmost efficiency within the hydraulic brake and clutch programs of automobiles. For instance, having responsive brake system underneath excessive boiling factors ensures that brake pedal journey is used to activate the brakes as an alternative of compressing the fluid is among the added advantages of DOT 4. 

One other profit could be It protects metallic surfaces from acid oxidation by maintaining the fluid pH within the alkaline vary and minimizing leakage via seal shrinkage brought on by extreme swelling or insufficient lubrication of shifting elements. 

In no way ought to Caltex Brake and Clutch Fluid DOT 4 be blended with any petroleum merchandise similar to motor oil or hydraulic fluid. Utilizing mineral oil-contaminated brake fluid damages brake system seals, that are particularly designed to be appropriate with non-petroleum brake fluids, inflicting brake fluid leaks and compromising brake system efficiency . 

Caltex DOT 4 Brake and Clutch Fluid is appropriate with different manufacturers of DOT 4/DOT 3 brake fluid and can be utilized as a substitute or service fill the place DOT 4 or DOT 3 brake fluid is really helpful, until the OEM particularly recommends in any other case. use of DOT 4 fluids.

Is it potential to combine DOT 3 and Dot 4 brake fluid in your automotive?

Sure. Some technicians say no and have good chemical explanations. However I’ve a confirmed observe document of over 25 years with this inventory.

I did it so much on function. However I at all times obtained higher after I blended. And it is best to too! To actually perceive my solutions to your query, it’s essential to know if in case you have DOT 3 in your system now, if it’s the really helpful unique fluid, and if you wish to complement or change it with DOT 4. This is able to be an improve. If it’s the different approach round, it might scale back the secure excessive temperature vary of DOT 4.

As a result of the principle distinction between DOT 3 and DOT 4 is warmth resistance. known as boiling level.

DOT 4, can safely deal with 311 F moist, 500 F dry. DOT 3, 284F moist, 470F dry. And I feel DOT 4 can safely deal with extra strain. Concerning the boiling level numbers you may already draw your individual conclusion. In case you add 4 to three, you increase the temperature from the boiling level. However when you add DOT 3 to DOT 4, you decrease the height boiling level temperature and scale back the general high quality of the DOT 4 brake fluid. 

However when you should add DOT 3 to DOT 4 and nothing else is obtainable… in a scenario emergency will work, so long as the distinction. It’s your determination ! You may nonetheless drive. It’ll nonetheless act regular. You simply lowered the reserve into the boiling level temperature vary. It is a vital security issue when driving at excessive pace, with a load and within the mountains. And what number of emergency braking maneuvers are you able to carry out safely, in a short while and with out overheating the brake fluid.

In case you discover this submit about DOT 4 brake fluid useful to you and also you need to know extra about automotive fluid data, please test extra on our web site Auto Oil And Fluid. Thanks on your curiosity!