[Roman-dude]

so like it says, is it really needed to drain the exhaust fluid with an oil change? pretty much doubles the price. i drive a lot, so i don't think it being there for too long is an issue..

thanks!

[rulonger]

No need to drain the active or passive tanks

montr had posted on another thread

[floydarogers]

Originally Posted by Roman-dude

so like it says, is it really needed to drain the exhaust fluid with an oil change? pretty much doubles the price. i drive a lot, so i don't think it being there for too long is an issue..

BMW was worried about crystalization in the lines. Turns out to not be a problem. However, there are problems with sensors and pumps.