To determine the right engine coolant for your car, you need to consider the type of coolant recommended for your car, which can be found in your cars owners manual or online. There are different types of engine coolants, and each type is specifically engineered for different types of vehicles. Coolant varieties are categorized by name and color. Here are the six types of engine coolant:

1. Inorganic additive technology (IAT)
2. Organic acid technology (OAT)
3. Hybrid organic acid technology (HOAT)
4. Phosphate-free organic acid technology (P-OAT)
5. Nitrite-free organic acid technology (N-OAT)
6. Silicate-free organic acid technology (Si-OAT)

It is important to use the variety recommended for your car. The product used should always meet the applicable specifications, which are available in your owners manual. A good service technician will always make sure that the coolant used meets factory requirements.

If you are unsure which type of coolant to use, you can go to your cars dealership. They will sell the coolant for your specific make and model, and its guaranteed to be the correct one. Many times, the coolant is actually branded for the car youre going to put it in.