What is the normal pH value of antifreeze?

[MacDakota]

Generally, the neutral pH is 7, which is used to slow down consumption and protect metal components. pH indicates acidity or alkalinity, with 7 being neutral, less than 7 being acidic, and greater than 7 being alkaline. The main reason is electrochemical corrosion. Only under specific pH conditions can the corrosion protection effect on metals be better. The principles for selecting antifreeze are as follows: 1. Choose the freezing point of the antifreeze based on the environmental temperature conditions: The freezing point of the antifreeze is one of the most important indicators, determining whether the antifreeze can prevent freezing. Generally, the freezing point of the antifreeze should be selected to be around 10°C to 15°C lower than the lowest winter temperature in the local environment. 2. Choose the antifreeze according to the different requirements of the vehicle: Generally, imported vehicles, domestically produced vehicles, and high-end vehicles should use permanent antifreeze (2 to 3 years), while ordinary vehicles can use direct-use antifreeze, and softened water can be used in summer.

[DeLyla]

I've been driving for over a decade, and the normal pH range for coolant is between 8 and 11, with the ideal range being around 8.5 to 10.5. If it's too low, like acidic water, it can cause rust inside the engine and even rot the hoses; if it's too high, the alkalinity is too strong, leading to radiator blockages. Last year, my car's temperature kept running high, and after checking, I found the pH was only 7.8, which was too low. It cost me unnecessary money during repairs. You can easily check it yourself using pH test strips—it's simple and takes just two minutes. Make it a habit to check during regular maintenance to avoid small issues turning into big problems. Safety comes first when driving, so don't overlook these details.

[DeJohnny]

The normal pH range for antifreeze is 8 to 11, ideally maintained between 8.5 and 10.5. If it's too acidic, it will corrode metal components and accelerate damage; if too alkaline, it forms scale deposits that hinder heat dissipation. Since it contains additives to protect the system, their effectiveness is compromised when pH changes. I use a test pen for convenient readings. If the pH is too low, replace the antifreeze promptly; the same applies if it's too high. Check it during every oil change or seasonal transition to prolong your vehicle's lifespan. Simple maintenance extends your car's youth, saving money and hassle.

[StLucy]

My neighbor complained last time that his car wouldn't move. The repair shop found out the antifreeze's pH was too low - it should normally be between 8 to 11, but his was only 7.5, causing rust in engine components. After replacing the fluid, it returned to normal. He told me this lesson: just test it with regular test strips or specialized tools. Don't neglect it in daily maintenance, as it can prevent major issues. Keeping it within the normal range maintains car health.

[GiselleDella]

Check the pH level of the antifreeze, which should normally be between 8 and 11. Purchase a testing tool, add a drop of the liquid, and observe the color change. A pH below 8 can cause corrosion; above 11 may lead to clogging. I personally check it twice a year, conveniently during seasonal changes. The steps are simple: extract a small sample, then compare it using test strips or a pen. Replace the fluid if it's below the standard value; maintaining this habit extends your car's lifespan and saves on repair costs. Don't procrastinate—get hands-on with these maintenance tips.