Can you just refill the coolant reservoir?
Top off the coolant reservoir If the coolant level is low in the reservoir, you can refill it to the max fill line but do not overfill it. The coolant mixture expands when it heats up and needs the extra room. Keeping your coolant at the correct level is one of the ways to keep your radiator good working order.
Why is the coolant reservoir empty?
Disappearing engine coolant could be the result of a slightly cracked hose, a tiny hole in your radiator, or a water pump issue. It’s also possible for a coolant leak to develop inside your vehicle or to simply vaporize into mist via your defroster.
Can I top up my BMW coolant with water?
Topping up with water is OK, but the coolant system is sealed and should not require topping up. Coolant loss is a common symptom of a cracked EGR cooler, so keep an eye on the level and mention it to your dealer.
What color antifreeze does BMW use?
Genuine BMW green HT-12 antifreeze for optimal cooling system performance. Compatible with all BMW models.
Do I put antifreeze in my coolant reservoir?
Does antifreeze go in the engine coolant? Once mixed with water, you simply pour antifreeze into the same place as the engine coolant: the expansion tank, or reservoir. It will then filter ’round the engine and mix with your coolant to make sure the liquid does not freeze.
What kind of antifreeze does a BMW take?
Your BMW, Porsche, Mercedes Benz, Audi or Volkswagen uses an HOAT coolant. HOAT coolants are derived from OAT coolants with the addition of silicate to protect aluminum surfaces.
Where do you put coolant in a BMW?
Open the hood and locate the coolant reservoir. In most BMW models, this small black tank is to the left of the engine, but this isn’t always the case. Double-check your owner’s manual if you’re not sure what to look for. Slowly turn the cap counterclockwise so that excess pressure to be released incrementally.