Oil Consumption Thread

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Originally Posted by holyc0w

Which weight did you have before?

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M1 5W-30

Edit: I am presently using M1 OW-40. Way lighter weight.

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Originally Posted by holyc0w

What's CCAF?

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Originally Posted by az3579

I'm assuming Catch Can Anti-Freeze, since he has heating elements installed on his can to prevent freezeups.

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dang, nice job! you got it. :)

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Originally Posted by az3579

Peter,
How would some condensation hydrolock the engine? Wouldn't the condensate just burn once the engine is warmed up? Do you think such a small amount is enough to be a problem? I thought a considerably larger amount of water was required for there to be an issue, which is why I ask.

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it's not the condensate, although i don't want that going back through my engine either if i can help it... it's oil getting sucked right out of the oil pan, through the return line. it's happened before when the CCV freezes - it's an extreme scenario, but entirely possible. in short, the intake manifold pulls vacuum on the CCV, but the consendate in the lower half of the CCV is frozen (and thus blocking the outlet from the valve cover), so the oil from the pan comes right up the drain tube. clearly a gross oversight on BMW's part... the 1-way check valve would prevent destruction.

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Originally Posted by az3579

Also, for the check valve - what size is needed? I haven't had time to watch the video, but I'm trying to order all the parts I need so they arrive before the weekend, so time is of the essence. I ordered the CCV parts a couple of nights ago - it seems like this check valve is the last thing I need. Is it the 12mm that comes up by default when I click on the link?

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yep, it's that exact one! essentially it allows the oil and condensate to drain back into the oil pan - like the OEM design - but does not allow oil to come back up. it's a 1-way valve.

Thanks Peter.

definitely looking forward to seeing some of the results of this!

I replaced my ccv two years ago with no change in consumption. Am I lucky/rare?

Check valve ordered. Looks like it might be happening this Sunday...

BP - I expect a full debrief upon its completion and field testing.

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Originally Posted by Karl Lazlo

BP - I expect a full debrief upon its completion and field testing.

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Roger, Roger.

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Originally Posted by az3579

Check valve ordered. Looks like it might be happening this Sunday...

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Where did you place the order? Amazon was going to take forever to get it here. Napa or AutoZone don't carry it.

Sent from my Droid Turbo2

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Originally Posted by az3579

Check valve ordered. Looks like it might be happening this Sunday...

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12mm?