Coolant Level

[danester]

Coolant top-off question..I cant see the min/max lines on the coolant expansion tank on my 2016 D3 223hp (they squeezed a size 10 girl into a size 4 dress)..So- to top it off due to low coolant alarm, do I fill resevoir to the bottom of the cap threads (even with top of resevoir)..or fill half inch below the top of the resevoir?..TIA

 

[dbsea]

it's very difficult to see on all of these boats! On my D6, I filled it to the bottom of the cap threads after I got a low coolant alarm and haven't gotten said alarm since (6 months ago).

 

[KennyMarrs]

Fill just to the bottom of the cap. I would also inspect for a leak at the engine, hot water heater and cabin heater.

 

[danester]

Thanks! She is returning from a 7 month slumber in the driveway- happened after last season's dewinterization as well..then was good all summer..not sure if that's why or not- but I will be sure to look for leaks..Just filling to the bottom of the cap seems safe - cant remember how I did it last time but I may have not put enough in last time...

 

[JeffreyAC77]

Our new to us 2015 R31-CB activated the coolant alarm when we first got her....requires periodic filling to the very top to solve the false alarm.

 

[American Flyer]

Good, I am not so concerned after hearing these comments. The second day out in our 2017 R 29 the low coolant light went on. After reading the manual advising to only use the Volvo yellow, I waited a week to get some shipped to me. The level in the tank was only down about a half an inch. It appears the low level warning is very sensitive in a lot of these boats. I did find a small leak (just a very slow drip from a hose clamp) and tightened that. Hopefully that is the end of it.