The heating fluid in the Alde system is comprised of 50% antifreeze and 50% deionised water and is vital to the functioning of the central heating and hot water.

Only fill and top up with Alde-approved antifreeze products. These all conform to Alde Approval 40X0 2024, meeting the following strict criteria.

• Lobrid formula intermixable with all Alde-approved antifreeze products.
• Available ready-mixed 50:50 with deionised water.
• Protect against frost to -37 °C.
• 5 year life.
• Magenta in colour.
• Manufacturing facility pass Alde audit, including verification of ISO 9001 and 14001 certificates and QA batch sampling.
• Pass 2-year real-time, real world wet test.

Be aware that in North America there is a different list of Alde-approved antifreeze products with a completely different chemical base.

Alde Protective Premium

Our own brand of antifreeze in G12++ or G12evo blend, both intermixable. Available from our resellers and dealer accessory shops as 1 litre, 4 litre and 20 litre ready-mix.

Fuchs Fricofin DP

Made in the UK. Available from Opie Oils as 5 litre or 20 litre concentrate, also to Alde Service Partners as an exclusive, ready-mix in 205 litre barrels direct from Fuchs Lubricants, part number 602572370.

Glysantin G40

Made in Germany. Available in the UK as Comma and Halfords retail products, both carrying the Glysantin G40 brand. 1 litre, 5 litre and 20 litre concentrate, or 5 litre ready-mix.

Volkswagen Group G12evo

Made in Germany. Available from VW, Audi, Škoda, SEAT, and Cupra dealerships worldwide, as 1 litre ready-mix.

What happened to G13?

Our products based on G13 spec (VW TL-774 J) haven't been manufactured in bulk quantity since 2023. They're superseded by the products in the current approval list and are intermixable.

What about other products?

We do not recommend any other products for the heating fluid. We do not recommend either Triple QX G13 or Qualkem Proshot G13. They are not Alde-approved antifreeze products.

Disposing of Waste Antifreeze

In the UK, you must not contaminate ground water with waste antifreeze or discharge to the fresh water sewer (drains).

You can only discharge to the foul sewer (toilet) if a special exemption is obtained from the regional water authority. These exemptions are rarely granted for commercial waste.

Waste antifreeze can be disposed of at select recycling centres or by registered waste carriers.

Here at the Moosewerks we've partnered with Malary Environmental Services for Industry to collect and dispose of our waste antifreeze.

The base chemical in our antifreeze is endlessly recyclable. Keep it in use and out of the environment.🌍