Just about every Mercedes engine in the last 25 years is going to take one of two possible specifications of coolant, according to Mercedes. The difference between them resides in a couple of chemicals that have been removed from the newer coolant specification, Borate and 2- ethyl hexanoic acid to be specific. As such, the new coolant is compatible with older engines, but the old formulation shouldn’t be used in a newer application. With that being said, the popular choices for MB 325.0 coolants are: Zerex G05 (slight yellow-ish tint), Genuine MB coolant (It use to be blue-colored Zerex G05), Zerex G48 (which is also blue, and the same thing as current Genuine MB coolant, and probably the same thing as Genuine BMW coolant). If those are not available, you also have Castrol Radicool which is 325.0. If the engine temperature rises when driving, or there is steam coming from under the hood, you must stop immediately, turn off the engine and let the engine cool down. Coolants/antifreezes are coloured so you can visually see them; colour intensity can be an indication of over dilution. The different colours are non specific to the different types of antifreeze. The manufacturer can dye the product any colour they want. The colour is no guide to the actual type of antifreeze type and the label should be read before use.

Cars made before 1998 usually need antifreeze that isn't OAT-based and does contain silicate. Antifreeze at Halfords Coolant can be plain water; water is a very effective coolant but would not protect against sub freezing temperatures or protect against corrosion inside the engine. The use of antifreeze protects against both problems. types of antifreeze offer better corrosion protection so that parts don't need to be changed as often.Traditional or 'standard' coolants for systems with aluminium components use silicates for corrosion protection and these tend to 'drop out' over time hence 2 year service life. Some manufacturers switched to OAT as it lasts longer and some engines don't like the stuff- one/some of the corrosion inhibitors in certain types/brands can soften some plastics over time... dexcool is one of the usual suspects associated with this, specifically the inhibitor 2-EHA

To ensure your cooling system continues to work properly, it is crucial to use the recommended Mercedes coolant. Consult your owner’s manual or seek advice from a specialist Mercedes garage, like us at South Coast Garage, to ensure the correct coolant is used. Coolant, as it relates to vehicles, is constantly a liquid or gas substance used to regulate the temperature of your engine. Liquid coolants are usually half water and half ethylene glycol. Water is used to transfer heat while ethylene glycol is used to lower the chilly point of the liquid. In colder climates, this is highly difficult. Interestingly enough, this isn't the first time you've heard of ethylene glycol as it is the primary ingredient in the prominent term "antifreeze". Keep in mind, you never want to pour antifreeze or water by themselves into your engine system. They need to be combined to create the normal coolant. is the usual spec for passenger cars and the approved coolants are typically the aforementioned G48 and G05. A w203 would've been filled with one of these when new i believe, exact flavour and colour would depend on who MB were buying coolant from at the time... also use our handy online look up tool to find the right one for your car. A general guide to antifreeze Ethylene Glycol has exceptional heat transfer properties. It efficiently absorbs the heat generated by the engine and effectively moves it away to maintain the correct operating temperature. However, Ethylene Glycol is toxic and must be handled and disposed of carefully to prevent harm to humans, animals, and the environment.

Coolant, also known as antifreeze, is a liquid that helps regulate the engine’s temperature and prevents it from overheating. It circulates throughout the engine, absorbs the heat generated by the combustion process, and transfers it to the radiator, where it is cooled before returning to the engine. Freeze and Boil Protection : Coolant’s additives will stop the fluid, and in turn the engine, from freezing in winter and boiling in summer, so your car runs safely in any weather. At South Coast Garage, we have a team of experienced professionals who can provide you with reliable and high-quality service to meet or exceed dealership standards. Our service employs only the best coolant, ensuring optimal results for your Mercedes-Benz while preserving your manufacturer’s warranty. None other than the user may want to use the pre-mixed product due to ease of handling or cost and visa versa. For the most accurate information regarding your particular Mercedes-Benz vehicle, it is always best to refer to the owner’s manual or speak with one of our Mercedes experts here at South Coast Garage. Our well-informed team can provide you with the manufacturer’s recommended coolant replacement interval, as well as any specific guidelines or requirements for your vehicle.