The cap may not be holding the pressure and could be leaking coolant.BMWs have specific coolant requirements to prevent buildup and corrosion of aluminum components, therefore do not use off-the-shelf antifreeze without checking compatibility. The most commonly used BMW engine coolant (PN: 82141467704) or a coolant that meets the requirements listed in your owner’s manual. Some models may have different coolant recommendations based on the region they are sold and manufactured.
#Bmw leaking coolant manual#
It’s important to note that checking the owner’s manual of your specific BMW model and year is always recommended. Additionally, long-life coolant contains corrosion inhibitors and other additives to help protect the engine and cooling system from rust and other forms of damage. This type of coolant is a mixture of water and various chemicals, including ethylene glycol, which helps lower the liquid’s freezing point and prevent it from freezing in cold temperatures. Long-life coolant is a specially formulated antifreeze designed to last up to 5 years or 150,000 miles, whichever comes first, without needing to be replaced. Rember, the level reading should be performed on a cooled-down engine for proper measurement.īMW typically uses a type of coolant called “long-life coolant” in its vehicles.
A schematic diagram is stamped on top of the coolant reservoir, illustrating the minimum and maximum level. In other words, the BMW coolant level is correct if the red float is aligned with the top edge of the filler opening. If the float is sticking up, your BMW coolant level is full. If the float is down, you need to add coolant. Add OEM BMW Engine Coolant mixed at 50/50.
#Bmw leaking coolant full#
The level is full when the bottom of the float reaches flush with the top of the cap. The red float may have two balls, indicating the low and the second indicating the full level. It will allow residual pressure to release without blowing off the cap.ĭetermine the coolant fluid level. Some BMW models, such as the 3-series, have the coolant expansion reservoir on the engine bay’s right side. This is the typical coolant expansion reservoir location.
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