Copy that! Thank you Sir!Coolant loss isn't normal, but if there was still some air in the system that worked its way back to the surge tank then that would drop the level. If you top it off again and the level drops again then you may have an issue. I had to top mine off a couple of times due to residual air in the system, but once the air was out the level hasn't changed at all except for normal changes w/ coolant temp and expansion/contraction.I recently had my resivor tank replaced a few months back. Like the forum said me level was at the bottom of the arrow. I then filled it up to the top of the arrow mark as recommended on here and noise went away. This was about 2000 miles ago just yesterday the noise returned slightly so I checked the tank level today and noticed it was at the bottom of the arrow mark. Is slightly loosing coolant normal? I haven't noticed any leaks. I hate to take it to the dealership if its normal to loose a little coolant due to evaporation. Anyone had this issue? Thank you!