De-Ionised Water

What is deionised water used for?

Deionised water, also known as demineralised water, has a number of uses when it comes to looking after your car, so it’s well worth having some in your car care supplies collection. For starters, deionised water is essential for lead-acid batteries, as they require topping up with deionised water to function correctly. Tap water contains minerals that can interfere with the battery’s chemical processes, reducing its lifespan and efficiency. Our deionised water ensures your battery remains in top condition, maintaining its charge capacity and performance.

You can also keep your engine cool and efficient with deionised water. When mixed with antifreeze, it prevents corrosion and scaling within the radiator and engine block. This ensures optimal heat transfer and prevents overheating, extending the life of your engine.

We offer a fantastic selection of CarPlan deionised water in this range. This premium motor brand produces some of the best fluids for vehicles on the market, so you can rest assured you’re investing in the best when you shop this range. Here we stock a selection of deionised water in 5L, 2.5L, and 1L sizes for your convenience. 

Impressed with our selection of deionised water by CarPlan? Make sure to browse our wider car fluids collection for a variety of other auxiliary fluids, as well as additives and antifreeze and screenwash. 

Buy deionised water from My Motor World today and get free UK delivery on orders over £25. And don’t forget to sign up toMy Motor World Member Perks to get access to exclusive discounts and deals, earn reward points, and take part in free giveaways and prize draws.