Can you use Honda DOT 4 brake fluid in place of 3 for your accord 2010?

It is generally not recommended to use Honda DOT 4 brake fluid in place of DOT 3 brake fluid in a 2010 Accord. While both DOT 3 and DOT 4 are glycol-based brake fluids, they have different boiling points and viscosities. DOT 4 brake fluid has a higher boiling point and lower viscosity than DOT 3 brake fluid, which means it can withstand higher temperatures and flow more easily through the brake system.

Using DOT 4 brake fluid in a system designed for DOT 3 brake fluid can potentially lead to decreased braking performance and even brake failure in extreme conditions. This is because DOT 3 brake fluid has a lower boiling point than DOT 4 brake fluid, which means it can boil and turn into vapor more easily under high temperatures. This vapor can create air bubbles in the brake lines, which can lead to a spongy brake pedal and reduced braking power.

Additionally, the lower viscosity of DOT 4 brake fluid can cause it to leak more easily past seals and gaskets in the brake system, which can lead to brake fluid loss and reduced braking performance.

For these reasons, it is generally not recommended to use Honda DOT 4 brake fluid in place of DOT 3 brake fluid in a 2010 Accord. If you are unsure about which type of brake fluid to use in your vehicle, it is always best to consult your owner's manual or a qualified mechanic.