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Offline Paul Truckle

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Low coolant level
« on: July 09, 2018, 07:58:12 PM »
I have a 2018 model with 3,000 km on the clock with the first service completed, I have just checked my coolant level on the centre stand and it is just below minimum, anyone else had this problem ? I have been riding it in some hot weather but this has dropped a lot. What coolant do bmw use ? Any advice.

Online SimonUK

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Re: Low coolant level
« Reply #1 on: July 09, 2018, 08:19:34 PM »
I would just keep an eye on on over your next few rides. The difference between max and min is about 100ml, so not an awful lot, and this is an expansion tank designed to take hot coolant as it expands.

To help, set yourself a routine on checking the oil and coolant. I would always check after getting back from a ride, leave the engine running until the fan has cycled on and off. I rolled the bike back into the garage and set her on the center stand, checked the oil sight glass after 5 minutes. And check the coolant after the bike has cooled down completely. You may find that your coolant level remains the same after several rides.

Offline Paul Truckle

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Re: Low coolant level
« Reply #2 on: July 09, 2018, 09:41:26 PM »
Thank you for your reply, I am planning to call BMW dealer tomorrow and ask their opinion and ask what coolant has been used.
 :028: :062:

Offline rmh999

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Re: Low coolant level
« Reply #3 on: July 09, 2018, 09:45:36 PM »
Mine recently went in for second service and was highlighted as "coolent low" on the service report.
They topped it up and advised to keep an eye on it - but does not seem too unusual to them

as per the previous advise - keep an eye after any decent long trip/

Offline Paul Truckle

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Re: Low coolant level
« Reply #4 on: July 09, 2018, 09:50:25 PM »
I have recently done a four day tour of the Dolomites which was very hot and some hot rides here, I will keep a close eye on the problem for a while, do you know want coolant they use ?

Online smithy

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Re: Low coolant level
« Reply #5 on: July 10, 2018, 03:29:39 AM »
*Originally Posted by Paul Truckle [+]
I have recently done a four day tour of the Dolomites which was very hot and some hot rides here, I will keep a close eye on the problem for a while, do you know want coolant they use ?

Just top it up with clean water, as mentioned, min to max is only ~100ml, so not much in the scheme of things.
Just check the bottom of your water pump (rhs just in front of the brake pedal) to see if it's weeping, it's a fairly common problem. Lots of water pumps have been replaced under warranty.

Smithy.
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Offline PaulS1000XR

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Re: Low coolant level
« Reply #6 on: July 14, 2018, 04:28:00 PM »
My XR doesn't use any coolant. Normally static at 2mm below Max when cold. However as the level of the fill hole is not that high above the Max level I could forsee a situation when the coolant gets hot and expands and the excess could spill out of the fill hole. Just a thought.

 :305:
PSH

Online smithy

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Re: Low coolant level
« Reply #7 on: July 14, 2018, 11:38:36 PM »
*Originally Posted by PaulS1000XR [+]
My XR doesn't use any coolant. Normally static at 2mm below Max when cold. However as the level of the fill hole is not that high above the Max level I could forsee a situation when the coolant gets hot and expands and the excess could spill out of the fill hole. Just a thought. :305:

Must admit, I've not seen one overflow...I keep mine topped up and never had an issue.

Smithy.
When I die, I want to go peacefully in my sleep like my Grandfather....not screaming like the passengers in his car..!

Offline CobraKai

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Re: Low coolant level
« Reply #8 on: July 27, 2018, 11:04:36 PM »
I've seen the level drop from MAX to about 3-4mm below MAX over the course of 3000 miles. No visible leaks. Lots of riding and some very high temps (110F). I attribute that small amount of loss to evaporation. If it's a lot more than that you may have a leak at the pump or one of the many hose fittings.

Offline BMW_XR_D

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Re: Low coolant level
« Reply #9 on: July 28, 2018, 06:09:33 PM »
Just top it off with distilled water , Never use tap water unless its emergency !