Hello Pete, Floyd, Scott, BFD853,
I throughly read all the information that you guys provided the past days
and followed your recommendations.
I read about the breather valve on a forum (I think that it's the same as
you're speaking about), it's connected to the base of the oil gauge tube.
The guy said that he replaced it (and a procedure is provided) withourt any
major improvement. Of course it's not a reference !
For the moment I didn't consider it since the oil consumption increase
coincidates with the new oil service made with 5W-30 and the work needing to
be performed is rather consequent.
I'll do it in a second attempt if the oil consumption doesn't get back
within the rails.
I've numerous figures to compare to because I'm a kind of paranoid,
monitoring oil consumption since 0 km.
Concerning the oil, I definately abandoned the idea to use 10W-60. I did a
search on google and found several possibilities for 0W-40 & 5W-40..
Considering some facts, and as already pointed out in a previous message you
sent, I'm wondering if LL-04 is really necessary: The car has been built in
Aug. 2001, it's not a diesel, in consequence, I may assume that LL-01 grade
could be used, although today BMW specifies LL-04. LL-04 has been developped
for diesels engines and may also be used in gas engines. LL-01 satisfies
current BMW's needs. So, the reply looks to be "No".
OTOH, in 2007/2008 the BMW dealer even put 5W-40 Labo Carat and in
2008/2009, 5W-40 Castrol TXT Softec that both were LL98 specified !
Mobil-1 0W-40 looks to be a good deal, however my fear concerns the
hydraulic tappets that might get noisy until the engine is warm enough. For
an analog reason (clearances due to wearing) I also fear a loss of oil
pressure in cold.
=> Any advise please ?
I had this issue with my old E30 (180000 km), I tried all sorts of
oils/viscosities and did not manage to cure it. Not worth to replace the
tappets, I left them clicking until I sold it.
For Floyd's information, about the LL-04 oil in the US, I read that it has
some bad reaction with the ethanol and may causes problems. For this reason
BMW wouldn't recommend it outside Europe