Hello, For the replacement of the cooler liquid, I can not just clamp the return flow on the balance tank and when the engine is running, the water pump can pump the old coolant into a container, while I continuously fill up new liquid in the balance tank? Once I have used up the new canister, the liquid should also be through once. OK, maybe you can not get out any deep slurry, if it is the after 5 years sc But as a measure in between without a lift and without a ventilator it makes sense? Thank you,