G11 coolant is used in early Volkswagen and Audi vehicles from the model years 1980 to 1996. G12 and G12+ are used in cars from 1996 to 2008, while G12++ and G13 coolants can be used in vehicles produced from 2008 onward. The Swedes are either hated or loved for their odd choices and unique style. But when it comes to engine coolant, Volvo has remained consistent. Their only coolant formula is that of a G48-type. G48 Coolant Due to G12 no longer being made, if the system needs a top-off, it is not recommended to mix antifreeze types. A drain, flush, and re-fill are suggested with the latest fluid. All other coolant forms are still in production and can be found with ease. With that said, updating to the most modern coolant isn't a bad idea. It's the best blend of corrosion-inhibiting organic additives and lubricating silicates. As a result, ethylene glycol, an antifreeze, is typically added (if you’re unsure about the process, head over to our write-up on how to put coolant in your car) to water to reduce its freezing point to a safe level. The antifreeze shouldn’t be drained every summer as it often lasts for two to three years. Engine Coolant

Both G13 and G40 coolants provide optimal lubrication for water pump bearings and other engine components. Lubrication is essential for the proper functioning of engine components and helps reduce wear and tear. Color Glycerin has a substantially lower environmental impact than glycol. While the other is made from mineral oil, the first is a byproduct of the manufacture of biodiesel. According to estimates, the production of G13 results in 11% fewer CO2 emissions than antifreeze containing glycol.The G13 has a purple/violet colour and has the same exceptional cooling and antifreeze performance as G12++. The main difference: it is manufactured using glycerin instead of glycol. Glycerin is much less harmful to the environment than glycol. One is a bi-product of biodiesel production, the other is produced from mineral oil.

Always make the decision to utilize the recommended products for your car. If you do need to mix a little bit of coolant, though, here are a few pointers. G13 contains some silicate additives for that additional healing aluminium protection. This is contrary to some earlier specifications that use OAT-technology (Organic Acid Technology). Silicate additives make G13 ideal for long-term use in all modern radiators, especially those constructed from aluminium, cast iron and magnesium alloys. Once you have chosen the correct coolant, you can fill the cooling system with the new coolant. You should follow the manufacturer’s instructions for the correct ratio of coolant to water, which is usually 50/50. Due to their silicate additions the long-term use of G13 is perfect for all modern radiators, especially those made of aluminum, cast iron, and magnesium alloys. Coolant MixingG11 is composed of an inorganic silicate base and traditional inorganic additions. It is either blue or green in color and has a boiling point of 221 °F. Although G11 coolant has a low heat transfer quality, certain vehicles up to 2016 may still use it. G11 coolant is typically used in automobiles built before 1996. The corrosion inhibitors make up the bulk of the various chemicals within the coolant. The four main types all use different compositions, giving them different properties suited to different cooling systems.

Finally, unless otherwise mentioned, HOAT is an advanced derivation of OAT and requires the same time change interval. Visit your dealership to ensure you’re getting the appropriate coolant for the task. They will sell the proper coolant for your particular make and model. Older vehicles typically employ IAT. It is substantially inferior to modern formulae and must be replaced every two years or 24,000 miles. OAT is one of those more modern formulas. Cars using this formula, typically need a change after five years or 50,000 miles. For further healing aluminum protection, G13 has certain silicate additions. This is unlike certain earlier standards that make advantage of OAT technology (Organic Acid Technology).

Volkswagen/Audi/Porsche Coolant Specifications

Some cars contain a viscous coupling to help overcome this. A fluid clutch operated by a temperature-sensitive valve that decouples the fan until the coolant temperature reaches a predetermined level. A temperature sensor also turns on and off the electric fan in other autos. In other words, the radiator fan is not working in this case.

Use coolant of the same color as what is currently in the tank when topping off the coolant tank. Unless the coolant reservoir tank is empty. Moreover, make sure that you’re diligent about the cost of a coolant flush (paired with a good coolant system cleaner and finding out where to do radiator flushing near me), as well as being wary of what happens if you overfill the coolant. FAQs On G12 Coolant What Kind Of Coolant Do I Need The owner’s manual of your car will explain the optimal sort of coolant to use for your car. The information you require can probably be found online if you don’t have a copy of your owner’s handbook. The formulae recommended by your dealer and in your owner handbook are presumably original equipment manufacturer (OEM) approved, but you may also be able to find aftermarket versions. What Is Coolant Made Of It provides optimum anti-freeze, overheating and corrosion protection. Its special composition raises the water’s boiling point to 135C (275F) while preventing evaporation, and lowers the freezing point to -40C (-40F) while maintaining a constant pH value. G40 coolant is a type of engine coolant that is commonly used in certain European car models, including newer models of Mercedes-Benz and BMW. It is also sometimes referred to as “MB G40” or “BMW G40.” On the other hand, G13 is not the best choice for older cooling systems with copper/brass radiators and heater cores. It doesn’t work well with the lead solder. Use antifreeze with G11 or G12 specification instead.Never use anything other than OEM-approved G11, G12+, G12++, or G13 coolant antifreeze in your Audi. Use only coolant made specifically for an Audi cooling system; do not use normal store-bought coolant. An undesirable reaction occurs in the cooling system of an Audi if an inferior coolant is used. What Coolant To Use For VW Golf Following this maintenance schedule will ensure the prolonged life of your cooling system. Below is a radiator with clogged ports due to the build-up of silicate. This can lead to an overheating engine, so consider the perceived cost-benefit you get from skipping coolant flushes versus the cost of a new engine.