DIY Solution to M54-M52TU CCV problems

[BavarianE39]

Originally Posted by Astrok

Every car from the mid 60's used this modified design. PCV in valve cover piped into intake manifold. I just made this change to my 2005 X3 had unexplained oil lose and chocolate mayo in valve cover. My boat engine uses this same design PCV in valve cover piped to intake manifold. She is run a lot harder then my X3. Engine is clean(no mayo) no oil lose. Glade I found this post

Good to hear!

Sent from my SM-N910T using Tapatalk

[axgordon]

This is the most amaizing mod for M54! No oil consumption and no noticiable side effects! It is so nice not to worry about hydrolocking the engine in cold weather and adding oil multiple times between oil changes. My OCI - 6.5 - 7.5K.