Originally Posted by jimwww
Well I did use the search function and took 15 min to find this:
Which is the only one that explains it so far that I have found- most talk about it on this forum discuss it like you already know what it is.. that is the frustrating part - I don't. I did find that explaination now - is it a poor design or? Why would Ram make it that way. I have never heard of a catch can before and certainly did not have one on any other past vehicle. Odd.
Okay- I'll summarize.
Do you need one - nope
Is it pretty cool- yep
Does it prevent oil vapors from being sent to and through the throttle body to be burned off, and therefore keep the TB clean- yep
Do most Ram owners with Hemi engines have one- nope
Do a lot of folks around here (the forum) have em- yep
How come Dodge or RAM do not include this seemingly important simple item as a stock feature if it helps-- near as I can figure- most folks would forget to empty it-- it would overflow and it would cause more problems than it would solve.
Full disclosure- I have one- love it- am constantly amazed how much oil is in there when I pull it every 60 days.
Keep searching and you'll find more useful info.