Frequently asked questions

Coolants have to be changed every three to four years depending on the product. This is important, because the additives contained in coolants are gradually broken down. Coolants retain their antifreeze action for a long time, but the corrosion inhibitors break down over time and no longer protect the cooling system from damage.

More information on changing coolants.

No. Coolants are chemical substances and they often become contaminated after years of service in the cooling system. Pouring them into the drains is an offence against waste disposal legislation and is punishable by law.

No. Concentrated coolants such as Glysantin® always have to be diluted. Undiluted products do not have sufficient capacity to absorb the heat from the engine, which leads to overheating. Undiluted coolants can also freeze in winter.

More information on diluting coolants.

When you are changing the coolant, we would always recommend that you dilute Glysantin® products with water at a ratio of 50:50 in order to obtain the best possible protection from corrosion, overheating and frost. The concentration of Glysantin® should be no less than 33 % and no more than 60 %.

More information on diluting coolants.

Normal tap water can mostly be used to dilute coolants if not harder than 3.5 mmol/l or contains chlorine etc.
We recommend to use demineralized or distilled water.

More information on diluting coolants.

Motor manufacturers only grant approval to products and do not issue recommendations. If a coolant has been approved by the motor manufacturer for original use, it may be changed during the period covered by the guarantee without affecting the manufacturer’s warranty.

More information on approvals.

Glysantin® products have a shelf life of at least three years from the date of manufacture in their sealed original packaging. Its service life after it has been diluted with water depends on the vehicle manufacturer’s specifications. We generally recommend changing coolants every 3-4 years.

More information on changing coolants is available here.

Glysantin® contains ethylene glycol (ethanediol), which is harmful if swallowed. Contact with the skin and eyes must be avoided. Glysantin® must be kept out of the reach of children and pets. If you do swallow Glysantin®, you should seek medical attention immediately and show the doctor the packaging or label. You can also obtain qualified assistance by calling the emergency telephone number that appears on the Glysantin® packaging.

Glysantin® products can be mixed with each other, but we do not recommend this. Each product contains a different combination of additives that are compatible with the different materials in the cooling system. Mixing different additives can impair their overall performance and reduce the level of protection.

We do not recommend mixing Glysantin® products with other coolants. The formulations of different products vary widely, and mixing them can lead to severe compatibility problems.

We do not recommend using Glysantin® products for any purposes other than those for which they are intended. Glysantin® products are developed and tested for use in automotive cooling systems. We do not usually have any information on using Glysantin® in other applications.