Low coolant level CEL

[DDlighttruck]

(01-25-2018 )Wiseman Wrote:  Driving around with unplugged/non functioning coolant level sensor isn’t good idea.
I do understand your frustration, but there should be another way to find out the culprit.
To flush properly coolant system use this products .

The fourth time I flushed it I used the product on the left. I will look for the product on the right. Thank you

[Volvo8873]

I am pretty sure the CEL for low coolant was because of my leaking radiator even though I kept the reservoir topped off. I parked the truck soon after and I will not know anymore until this spring when I replace my radiator.