Brake fluid is one of those maintenance items that's easy to overlook, but running the wrong fluid or letting old fluid sit in your lines can mean a soft pedal right when you need stopping power the most. Motorcraft PM-1-C is the exact DOT 3 formulation Ford engineered for the Mustang from the factory, so you get OE performance and compatibility without guessing at a generic parts store bottle.
Factory-correct formulation. PM-1-C is built to Ford's factory-fill spec, which means it's formulated to work correctly with the seals, hoses, and internal components already in your brake and clutch hydraulic system. Using a fluid that doesn't match Ford's spec can lead to seal swelling, sponginess, or premature wear, so sticking with the Motorcraft formula takes that risk off the table entirely.
Built to handle real heat. This fluid carries a minimum wet boiling point of 284°F and a dry boiling point of 500°F, and it's rated to DOT 3, SAE J1703, and FMVSS 116 specifications. That dry boiling point in particular gives you a real margin of safety under hard braking, since fluid that boils creates gas bubbles in the line and that's what turns a firm pedal into a mushy one right when you're trying to slow down.
More than just brakes. On 2005-2014 Mustangs, this same fluid also services the hydraulic clutch system, so if you're doing a full fluid flush or bleeding your clutch after a clutch job, PM-1-C covers both jobs with one bottle. That makes it a smart item to keep on hand in the shop or garage rather than buying two different fluids for two different systems.
Which fluid does your Mustang need? Ford's factory brake fluid spec has changed across Mustang generations, so use the table below to confirm what your car came with before you flush or top off your system.
| Mustang Generation | Years | Factory Brake Fluid Spec |
|---|---|---|
| Fox Body | 1979-1993 | DOT 3 |
| SN95 / New Edge | 1994-2004 | DOT 3 |
| S197 | 2005-2014 | DOT 3 (also services hydraulic clutch) |
| S197 Track/Performance (Boss 302, Shelby GT500) | 2011-2014 | DOT 4 recommended for track use |
| S550 | 2015-2023 | DOT 4 Low Viscosity (LV) |
| S650 | 2024-present | DOT 4 Low Viscosity (LV) |
Product Benefits
- Factory Motorcraft formulation
- Meets DOT 3, SAE J1703, and FMVSS 116 specs
- 500°F dry boiling point
- 284°F minimum wet boiling point
- Doubles as clutch hydraulic fluid on 2005-2014 Mustangs
- OE compatible with factory seals and lines
- Simple, affordable maintenance item
- Trusted Ford factory-fill brand
About Motorcraft: Motorcraft is Ford Motor Company's own parts brand, supplying the exact components and fluids used to build and service Ford and Lincoln vehicles at the factory. Because Motorcraft parts are developed alongside the vehicles themselves, they're engineered to fit and perform correctly the first time, without the compatibility questions that can come with aftermarket alternatives.
WARNING: California Residents: Cancer and Reproductive Harm;
www.p65warnings.ca.gov
Product Specifications & Vehicle Fitment
Review the product details and confirm compatibility with your vehicle before ordering.
| Specification | Details |
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