captainscarlet Posted August 4, 2016 Share Posted August 4, 2016 Just wondering what the general consensus is regarding coolant level in the expansion bottle? I notice mine is hovering just above the low mark, perhaps 0.5 cm. I'm not concerned as yet. On previous bikes I've had, notably a couple of Triumph Sprints, they flatly refused to accept more coolant than the low mark on the expansion bottle, spitting out anything above that. They never dropped below the low mark either. Engine temps seem to be fine moving between 70 to 80 celsius depending on riding conditions. CS Update Stickler for detail as I am I couldn't resist topping up the coolant reservoir. It took exactly 1 dl (a tiny amount in other words) to raise the level to full. That's from just above the low mark. Link to comment Share on other sites More sharing options...
dawnseekr Posted September 29, 2016 Share Posted September 29, 2016 Makes sense, according to the manual at page 7-14 the reservoir capacity is 0.25 l. So filling 1 dl is almost half the capacity of the reservoir. I just checked mine, I'm near the minimum level mark too. 2015 FJ-09 Matte Grey (Sold!) Link to comment Share on other sites More sharing options...
berryber Posted October 1, 2016 Share Posted October 1, 2016 Added to mine a few days ago. Ended up a little above the high mark. It's still there after 50 miles and several times seeing the 221 temp and the fan running. Link to comment Share on other sites More sharing options...
desilva Posted July 1, 2017 Share Posted July 1, 2017 Guys, Quick question - what coolant are you using to "top up" the level... My bike now is a year old and has about 5500 miles. The coolant level in the reservoir is exactly at the LOW mark and I'm nervous about it. I read that simply adding any coolant will "gunk up" the system, so looking for advice. Did you go with the OEM coolant from the dealership? Thanks! Link to comment Share on other sites More sharing options...
bobaintstoppin Posted July 1, 2017 Share Posted July 1, 2017 I just changed out my coolant with a jug of BMW branded stuff I had on the shelf. You can use any good brand made for aluminum systems. My level was always at the low end of the gauge on the overflow tank. If you fill it more, it might well just burb it out next time the engine gets hot. as long as it holds steady I wouldn't worry about it. Edited to fix auto correct errors. Link to comment Share on other sites More sharing options...
17a Posted July 2, 2017 Share Posted July 2, 2017 Mine has stayed at about 3/4 since new and now has almost 6000 kms on it. Link to comment Share on other sites More sharing options...
desilva Posted July 3, 2017 Share Posted July 3, 2017 I just "topped up" mine to inbetween High and Low mark yesterday... wasn't very difficult job to do. I didn't know enough, so removed the side panel, opened the radiator cap etc,. but that's not the way to top up the reservoir! I realized at that stage that I just needed to loosen the 2 bolts near the reservoir and just fill it in from there by removing the cap. Lesson learnt! :-) Link to comment Share on other sites More sharing options...
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