The truth is, color is not a reliable predictor for what type of coolant you have. For example, OAT coolants are usually orange, yellow, red or purple. HOAT coolants are orange and yellow for the most part. ... Coolants that manufacturers sell can confuse matters even more, like Honda's blue coolant.

What happens if you use the wrong color antifreeze?

If you do mix different-coloured coolants they generally do not mix well and some can form a gel-like substance. This will halt coolant flow, causing blockages that can lead the engine to overheat, as well as damage to the radiator, water jackets and heater core. Also, the water pump can overheat and fail.

Can I put any Colour coolant in my car?

Green or orange should work in the cooling system of just about any vehicle on the market, so you don't need to worry about whether or not you have a brand that was specifically made for your car. The problem with green and orange antifreeze is that they do not work together.