Best answer: Can you put DOT 4 in a dot 5 motorcycle brake system?

Can you mix DOT 4 and DOT 5.1 brake fluid?

DOT 4 and DOT 5.1 are both glycol based and can be mixed. The system will only perform as well as the lesser fluid is able to.

Can I use any DOT 4 brake fluid for motorcycle?

These type of brake fluids have different boiling points and usability. However, a DOT 4 recommended in a motorcycle and a DOT 4 recommended in a car will use the same DOT 4 brake fluid. There is absolutely no distinction between these brake fluids used in the car and the motorcycle.

What brake fluid is not compatible with DOT 5?

Moisture introduced into a brake system with DOT 5 fluid does not mix with the brake fluid. This causes the moisture to freeze or boil and can lead to brake fade. Glycol and silicone-based fluids are NOT compatible. Do not mix these fluids.

Can I use DOT 4 in my Harley?

Harley-Davidson motorcycles use either DOT 4, which is glycol-based, or DOT 5, which is silicone based. Beginning in 1976, Harley-Davidson used DOT 5 in all its brake systems. For model year 2005, the FL platform changed to DOT 4. For 2006, all models except XL went to DOT 4.

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What happens if you mix DOT 4 and DOT 5 brake fluid?

There are DOT4 fluids with boiling points that exceed DOT5 so there’s really no need to consider using DOT5 for on-road use. DOT3 and DOT 4 cannot be mixed with DOT5 fluid. They are incompatible and if mixed, brake failure may occur.

Can I use DOT 5 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. … Here you can see that silicone based DOT 5 is the odd one out and is not compatible with any other DOT brake fluid.

Can you use automotive brake fluid in motorcycle?

Is automotive and motorcycle brake fluid the same? Yes. You can use automotive brake fluid in a motorcycle.

What kind of brake fluid does my motorcycle use?

Brake fluid is available in four grades: DOT 3, 4, 5, and 5.1. DOT 3, 4, and 5.1 fluids are glycol based and can be mixed together, but DOT 5 fluid is silicone based and can’t be mixed with any other type of fluid.

Can I use DOT 3 instead of DOT 4?

Yes, DOT 3 brake fluid is compatible with DOT 4 brake fluid. However, DOT 4 offers a higher boiling point. … It’s not compatible with the other brake fluids and is used mostly in classic cars that remain in storage for long periods and need a brake fluid that doesn’t absorb water.

Is it OK to mix brake fluid brands?

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. … By mixing DOT 3, 4 and 5.1 brake fluids, assuming it is fresh fluid, the worst thing that can happen is a drop in the boiling point of the whole fluid.

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