[tomtom]

can you just add the bottle to the coolant/water in the system and let the overflow handle the ratio? It says one bottle coolant system.
Or is everyone draining adding mixture?

[Black Chili]

It's fairly easy to siphon out the 12 or 16 oz you need to put the redline back in. Works well...

[tomtom]

are there noticeable temp drops with its use?

[E92Pilot]

Originally Posted by tomtom

are there noticeable temp drops with its use?

I run this stuff in my race car, since you can't run coolant at the track. Just straight water and a bottle. I never noticed any cooler but worked just like coolant....

[jeho]

so back to OP question...

can i just pour a bottle of the water wetter in there to mix with the oem coolant?

[GhOsT_E90]

Originally Posted by jeffE92TT

so back to OP question...

can i just pour a bottle of the water wetter in there to mix with the oem coolant?

YES

[jeho]

would i need to drain any out?

I've read that some people drain 2qts out, pour 1 bottle of water wetter (1/3 quart) and pour 1 and 2/3 qt of distilled water

[Jed]

Are you guys doing this/talking about this to drop the temperatures you see on your gauge? Because that's oil temperature, not coolant temperature.

[jeho]

of course not...
this is for coolant temps since the 335i coolant system lacks during high heat days when tracking the car

[tomtom]

about coolant level...is that floating stick suppose to be above the resevoir spout. hard to tell by diagram.