Racing Brake Fluid Showdown (2024 Edition)

We're continually updating our lineup of brake fluid to adapt to changing market demands and options. Here are some of the most popular track day brake fluids available right now and our top picks. This comparison chart by LelandWest is a great resource for comparing brake fluids. Here is a quick chart for the fluids we'll talk about below:

  Castrol SRF Torque RT700 Motul RBF700 Project Mu GFour ATE Typ 200
Wet BP 270°C 226°C 205°C 221°C 198°C
Dry BP 310°C 362°C 336°C 335°C 280°C

The Gold Standard: Castrol SRF

The Castrol React SRF brake fluid remains the standard for most track day enthusiasts. While the dry boiling point is mid-pack at 590°F (310°C), the wet boiling point is what continues to stand out with SRF at 518°F (270°C). No other brake fluid comes close to Castrol for this measure. Why does it matter? for a lot of casual track day enthusiasts, this is a fluid that can last the whole season and is less likely to require repeated brake flushing thus saving a lot of time/labour costs.

While you pay a premium up-front, we find that most of our customers save money in the long run as they can count on this fluid to last them for our whole track season which typically spans from May to September. This is why for our average track day participants that run maybe 1 event per month over the 4-5 month season, SRF is a great choice.

Best Overall Track Day/Racing Fluid: Torque RT700

While Torque RT700 has a lower wet boiling point than Castrol SRF at 439°F (226°C), for those that want the ultimate in braking feel should definitely consider this brake fluid. It boasts the highest dry boiling point at 683°F (362°C) but Torque really distinguishes itself as having an emphasis on compressibility and reserve alkalinity. It's worth visiting Torque's site for an in-depth explanation on what the different features are. This is a company that only does brake fluid and poured every resource into developing what we feel is the best racing braking fluid on the market right now.

It also comes in a 500ml bottle which is great for motorcycles (compared to 1L bottles) and mid-season bleeding. Those that are running a lot of events or competing in racing are bleeding fluid frequently and would not see the benefit in a higher wet boiling point as offered with Castrol SRF, but will take advantage of improved feel and lubrication as well as corrosion inhibition.

Latest from Motul: RBF700 (& Brembo HTC64T?)

In our opinion, the Motul RBF700 more or less supercedes the RBF660 by offering a slightly improved minimum wet boiling point (+5°C/9°F) and minimum dry boiling point (+10°C/18°F) at a virtually identical pricepoint. With a typical dry boiling point of 336°C/637°F and wet boiling point of 205°C/401°F it is going to be more than sufficient for most track day enthusiasts. It's hard to recommend it over the Torque RT700 which has it beat in just about every objective parameter. However, it's worth noting the RBF700 is a more widely available fluid as the Motul product lines have a massive distributor network, so if you need it in a pinch these will be easier to find. 

We suspect that the RBF700 and Brembo HTC 64T are very similar fluids, as they have almost identical specs. While Motul is a French company and Brembo an Italian one, both of these racing brake fluids are made in the UK. They have nearly identical wet and dry boiling points, and both fluids boast low compressibility but neither have testing data/numbers to support the claim. Even the bottle shapes were nearly identical but with different colours at one point.

Honourable Mention: Project Mu G-Four 335

The Project Mu G-Four brake fluid is not as widely available as the others mentioned as it's made in Japan and although they are famous for excellent brakes, they are not as well known as the likes of Castrol, Motul, or Brembo. This fluid offers an excellent wet boiling point at 221°C (430°F), which is higher than Motul/Brembo, yet comes in at the same if not slightly lower price point. It matches the RBF700 and HTC64T with a dry boiling point of 335°C/635°F

project mu g-four 335

It comes in a cool metal tin and the fluid has a neon green tint to it. As an indicator, the fluid gets clearer and clearer as it ages so you know it's time to flush it out. Another popular JDM brake fluid is the Endless RF650 but the PMu beats out Endless in dry and wet boiling points and even pricepoint so in our opinion, it's not worth considering Endless.

No longer recommended: ATE Typ 200 

In the 2000's, ATE's Super Blue was one of the most popular track day brake fluids. In the 2010's we saw ATE filed with a cease and desist due to the dark colour of Super Blue and them replacing it with a new amber coloured formulation called the Typ 200. This is one of the best value track day brake fluids at around $40 CAD/L, it comes in at about half the price of the fluids mentioned above. However, with a dry boiling point of 536°F(280°C) it is significantly lower than any of the fluids above. 

ate typ200

This is no longer a competitive brake fluid and is actually most comparable to Motul's Dot 5.1 street fluid, which is a superior fluid for a daily driver. Not only that but on certain vehicles, we've noticed that ATE tends to make for a squeaky pedal/master cylinder. We've seen this on Porsches and BMW's numerous times and while it's hard to speculate on whether any damage is done, it's at least a nuisance. When we tracked stock power NA Miatas and Civics, this fluid never let us down, but with modern cars having so much more power and weight, we don't think this fluid really makes sense any more in a motorsports environment.