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  #311  
Old 01-06-2021, 10:07 PM
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I previously installed the catch can mod in my e39.

I have installed a M56 valve cover with integral CCV in my e53. This seems to work really well. I am not using much oil, and don't have to worry about the CCV under the intake manifold...
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  #312  
Old 01-06-2021, 11:12 PM
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Quote:
Originally Posted by docnabimmer View Post
glad that it worked out for you fifty!!!
you mind posting pics of your SET UP?
I'll get some in the next couple of days. I thought I already had some, but I can't find them.
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  #313  
Old 01-06-2021, 11:26 PM
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Originally Posted by docnabimmer View Post
I had the EXACT SES light with High LTFT like yours, traced it to a loose connection between pcv hose to rear intake port. I tightened that up and have never had an SES light since. Monitoring LTFT after that shows my readings hovering around the 5-8 not going over 10 and triggering a SES.
just keep in mind that will all this I noticed a small oil leak that i had thought was from the OIL Level sensor- it wasnt, it was from a split RUBBER Cover to my OIL DIPSTICK TUBE.
5k into the MOD and I chickened out thinking it was my RMS or OIL PAN GASKET.
Went back to our conventional CCV factory set up with 5-30 Supertech FS.(yes-thats right)

So far 1/2 quart low .2000 miles in.SWitch to Rotella next.
I wouldn't expect much by changing oils. Before I did the mod I tried various weights up to 10w60 and had no appreciable effect on consumption.
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  #314  
Old 01-07-2021, 02:30 AM
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Quote:
Originally Posted by Fifty150hs View Post
I wouldn't expect much by changing oils. Before I did the mod I tried various weights up to 10w60 and had no appreciable effect on consumption.
yep , im back there again - i still have my set up though and ive become adept at taking off and installing the conventional CCV in our cars that i dont mind it at all now ...current consumption is "acceptable" to me but i would like it close to the negligible Bavarian moD result like i had...
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  #315  
Old 02-24-2021, 07:47 PM
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BMW e39 oil consumption.

In all my years driving BMWs. This has been the most significant post I have adopted. My old e39 is currently being driven by my son. I believe 200K miles and very little oil use on this variant.
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  #316  
Old 02-24-2021, 10:54 PM
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Quote:
Originally Posted by docnabimmer View Post
glad that it worked out for you fifty!!!
you mind posting pics of your SET UP?
Here's some pics. Sorry it took so long. Have been chasing some other problems on my truck. Finally got a chance to get some. My latest oil consumption has been quite good compared to how it was. There is a caveat however. Since my last oil change I've been doing about 95% around town driving with a little freeway. This normally results in lower oil usage on its own. Because of that I don't consider this a total validation of this mod. It is a very good sign though.

I'm about 500 miles from my 5000 mile oil change being due and I have only used 1 liter of oil. I've never had oil usage that low. Having the catch can allows me to recover oil that normally would have been burned, even with the PCV mod. Since the original mod doesn't call for a catch can I don't see how it really cuts down on oil consumption. I can say without a doubt putting a catch can in the system does.
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  #317  
Old 02-25-2021, 02:23 PM
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@ fifty150 -- you need to work on then baffling and/or the fitting that comes off the valve cover if you want to reduce the oil in the catch can. The original system had a cyclone oil separator which you disconnected when you did "the mod."
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  #318  
Old 02-25-2021, 03:25 PM
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Quote:
Originally Posted by 80stech View Post
@ fifty150 -- you need to work on then baffling and/or the fitting that comes off the valve cover if you want to reduce the oil in the catch can. The original system had a cyclone oil separator which you disconnected when you did "the mod."
I get that. That was kind of my point. The original mod doesn't do that. It does exactly what I did minus the catch can which is why I don't understand how the mod could actually reduce the oil consumption without a catch can.
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  #319  
Old 02-25-2021, 04:05 PM
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Originally Posted by Fifty150hs View Post
...
Have you had a California smog check with modifications like that showing yet? Any concerns or plans for when it is next needed?
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  #320  
Old 02-25-2021, 04:11 PM
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If you have more flow because of blow-by and/or air leaking into the crankcase (eg. rear main seal) and you don't have the baffling to keep up, then you have more oil going with it and probably a check engine light. Like I said before, people don't realize how much luck there is involved in having this work. Most of this thread is a lot of BS.
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