Unable to flush your cooling system? Use this table as a reference to see which kinds you can mix safely. Upgrading to G13 from more dated types of antifreezeĪlthough for present-day radiator types, G13 antifreeze is backwards compatible, we suggest thoroughly flushing your cooling system when upgrading from another kind of coolant to keep the system clear. Antifreeze with G11 or G12 specification should be used instead. However, G13 is not ideal for older cooling systems with copper/brass radiators and heater cores (it doesn’t integrate well with the lead solder). The introduction of Silicate additives makes G13 ideal for prolonged use in all modern radiators, especially those derived from aluminium, cast iron, and magnesium alloys. Quite apart from the benefits of protection against freezing, the G13 is also outstanding when it comes to cooling, and it shields against corrosion and chalk deposits.īenefits of using silicate additives in aluminium radiatorsĪs opposed to many earlier specifications using OAT-technology (Organic Acid Technology), G13 boasts silicate additives for extra healing aluminium protection. One is a by-product of biodiesel production while the other is derived from mineral oil.Ĭurrent estimations suggest that G13 manufacture produces 11 % lower CO2 emissions than antifreeze with glycol. The production of glycerin is far friendlier to the environment than of glycol. The major difference in its manufacture is the preference of glycerin over glycol. Glycerin based means being environmentally friendlyīearing similar exceptional cooling and antifreeze performances as G12++, the G13 boasts a vivid purple/violet colour. Their antifreeze specification has continually evolved through time resulting in the latest (G13) established in 2013. Let’s briefly examine the various VW specifications.
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