Oil comsumption

Hi,
We have a 1995 850 with about 115k miles on it and it is using about 1
1/2 quarts of oil every 5000 miles. Is this within normal range and what,
besides engine wear could be causing this usage. Is it possible that there
is excessive back pressure somewhere or something of that nature which could
cause part of this much oil usage?
Thanks for your responses. Brad

 

Somewhere I think I heard that until oil usage got up to
1 qt per 1000 miles in high mileage auto's you should not
be concerned about....

I also would not hurt to get a compression test done every
year or so to see what kind of ring wear you are getting...

Using synthetic oil you should see very litte wear/compression
change...

Back pressure can cause loss of oil...the next time you have
it on a lift take a look at the bottom....a oil leak will
generally show as a coating of grit/oil on the bottom caused
by dirt from road sticking to the oil slick that the leak
produces......

This what I have always done/used....

hope helps.....sno

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Totally within normal usage ranges. Leakage from the rear main seals
and/or the cam seals seems to happen with some of these cars as they get
older.

John

 

I once heard and practice the policy of a good rev out on the free way .Once
the car is warm give it a bit of stick rev it out 5k it wont hurt it but it
will stop the grunge from collecting around the internals .Many drive their
Volvo gently so a mechanic told me we give them a good work out then tune
them up .CHEAP oil will vaporise but BP 5000 or Mobil One will not only
protect your car but doesn't boil off .Remember if you do a lot of city
driving you will find when you drive on a trip the water vapour in the oil
will boil off so will the finer fractions of oil .Synthetic oil doesn't boil
off much at all as its equal in size of molecules ,not light and heavy such
as dyno oil is .

 

A former police officer I spoke to said that they did the same thing with
their Camaro highway patrol cars for the same reason.

 

It's called an "Italian Tuneup", probably because Italian cars used
to
be prone to carbon buildup, and Italian drivers like to drive like
maniacs
anyway...

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