Where to Add Coolant?
3 Answers
Coolant is added to the radiator and the auxiliary coolant tank. Here are the related details: 1. The method for adding coolant is as follows: (1) Turn the car key forward to shut off the engine. (2) Let the engine sit until the water temperature drops to normal. (3) Open the front engine hood, unscrew the cap of the small coolant reservoir, release the pressure in the cooling system, and add coolant to the reservoir up to the MAX mark. 2. The functions of coolant are as follows: (1) Provides anti-corrosion protection for components of the cooling system. (2) Prevents scale buildup, avoiding reduced heat dissipation in the radiator. (3) Ensures the engine operates within the normal temperature range.
Last time I changed the coolant myself, it took me a while to locate it too. The translucent plastic tank in the engine bay is the coolant reservoir, usually marked with MAX/MIN level lines. The cap typically bears a yellow thermometer-like symbol. Crucial reminder – always perform this when the engine is cold! Opening the cap on a hot engine can release scalding steam. Locations vary by model – Japanese cars often place it near the battery, while German vehicles position it closer to the firewall. Just look for the largest auxiliary reservoir. Pro tip: never use tap water as substitute, it causes scaling that clogs pipes. Recommended complete replacement every 2 years or 40,000 km. For top-ups, always use OEM coolant of matching color.
Here's a handy identification tip: Open the engine hood and look for containers with colored liquid. Most coolant is fluorescent green or pink, and its reservoir is larger than the windshield washer tank. Last time I helped my neighbor check her BMW, the coolant reservoir was located behind the right headlight. Always wear gloves when handling, as spilled liquid is corrosive. If the level is below the MIN line, it needs topping up – ideally test its antifreeze capability with a refractometer. One often-overlooked detail: If the cap has a pressure relief valve symbol and you hear hissing when twisting it, there's still pressure inside. You must wait until it's completely cooled before operating.
