Oil usage

The plane I'm looking at has an O-540 that has 300 hrs since overhaul in
1996, so it hasn't been flown a bunch. The owner flew it here in under 2 hrs
and I know that it used at least 1 quart, maybe 1.5. I don't remember how
much he put in to start the trip, so I can't say if any was tossed in
flight. Interesting to hear you say that it gets better over time.
"Tony" wrote in message
...
In my o540 keep it at 9 and it burns about 1qt every 4 hours. Has 300
SMOH in 1989 and it sat for about 3 year with out flying and now I have
been flying it alot so it just gets better and better. We started off
about 2hrs for every qt.

*** Sent via http://www.automationtools.com ***
Add a newsgroup interface to your website today.

This thread has made me feel a bit better about mine. I've got a 180 hp O-360
Lycoming with a fresh top inspection on chrome jugs. I thought that the 1qt in 8-10
hours I was getting was a bit high, but seems to be fairly inline with what some other
folks are getting. Supposedly the chrome jugs just plain burn more oil. My buddy's
250 hp O-540 burns a quart in 15 hours or so on Nitrided jugs.

I don't run more than 7 quarts in it either, or it'll belch it out. The power
useage makes a difference too. At low power settings and low altitudes, the low
manfold pressure seems to suck more oil past the rings (8 hours/qt) from the ambient
crankcase. At higher powers/altitudes, it burns less (10 hours/qt).

-Cory
Dan
Luke
wrote:
: "GE" wrote:
: Still shopping for my first bird. Curious as to how much
: oil usage is considered "normal"?

: My Lyc.O-360 burns a quart every 8 hours. Lycoming says as low as 3.5
: hrs/qt would be acceptable. As others do, I refrain from filling it to
: the 8-quart maximum.
: --
: Dan
: C172RG at BFM



--
************************************************** ***********************
* The prime directive of Linux: *
* - learn what you don't know, *
* - teach what you do. *
* (Just my 20 USm$) *
************************************************** ***********************

Just remember that using/adding oil is good for an engine. Within reason.
It keeps the buildup of impurities in the oil down such as lead and
other by-products of combustion.
Additives in oil tend to wear out after a while and by adding new oil,
your also adding new additives.

It's nice to say that your using a quart in 15-25 hours, but what really
is the state of your oil?

Just a thought.


wrote:

This thread has made me feel a bit better about mine. I've got a 180 hp O-360
Lycoming with a fresh top inspection on chrome jugs. I thought that the 1qt in 8-10
hours I was getting was a bit high, but seems to be fairly inline with what some other
folks are getting. Supposedly the chrome jugs just plain burn more oil. My buddy's
250 hp O-540 burns a quart in 15 hours or so on Nitrided jugs.

I don't run more than 7 quarts in it either, or it'll belch it out. The power
useage makes a difference too. At low power settings and low altitudes, the low
manfold pressure seems to suck more oil past the rings (8 hours/qt) from the ambient
crankcase. At higher powers/altitudes, it burns less (10 hours/qt).

-Cory
Dan
Luke
wrote:
: "GE" wrote:
: Still shopping for my first bird. Curious as to how much
: oil usage is considered "normal"?

: My Lyc.O-360 burns a quart every 8 hours. Lycoming says as low as 3.5
: hrs/qt would be acceptable. As others do, I refrain from filling it to
: the 8-quart maximum.
: --
: Dan
: C172RG at BFM

True... In my 8-quart sump (which I normally keep between 6 and 7), I
generally consume irritatingly just a *bit* more than a case per 40-50 hour oil change
intervals. Seems like it always takes more than the 4-5 quarts I've got left after
filling it.

Oh well, I guess when the case is done I should change it at 35 hours, anyway.

-Cory

bubba wrote:
: Just remember that using/adding oil is good for an engine. Within reason.
: It keeps the buildup of impurities in the oil down such as lead and
: other by-products of combustion.
: Additives in oil tend to wear out after a while and by adding new oil,
: your also adding new additives.

: It's nice to say that your using a quart in 15-25 hours, but what really
: is the state of your oil?

: Just a thought.


: wrote:

: This thread has made me feel a bit better about mine. I've got a 180 hp O-360
: Lycoming with a fresh top inspection on chrome jugs. I thought that the 1qt in 8-10
: hours I was getting was a bit high, but seems to be fairly inline with what some other
: folks are getting. Supposedly the chrome jugs just plain burn more oil. My buddy's
: 250 hp O-540 burns a quart in 15 hours or so on Nitrided jugs.
:
: I don't run more than 7 quarts in it either, or it'll belch it out. The power
: useage makes a difference too. At low power settings and low altitudes, the low
: manfold pressure seems to suck more oil past the rings (8 hours/qt) from the ambient
: crankcase. At higher powers/altitudes, it burns less (10 hours/qt).
:
: -Cory
: Dan
: Luke
: wrote:
: : "GE" wrote:
: : Still shopping for my first bird. Curious as to how much
: : oil usage is considered "normal"?
:
: : My Lyc.O-360 burns a quart every 8 hours. Lycoming says as low as 3.5
: : hrs/qt would be acceptable. As others do, I refrain from filling it to
: : the 8-quart maximum.
: : --
: : Dan
: : C172RG at BFM
:
:
:


--
************************************************** ***********************
* The prime directive of Linux: *
* - learn what you don't know, *
* - teach what you do. *
* (Just my 20 USm$) *
************************************************** ***********************

On Fri, 14 May 2004 13:01:58 GMT, "GE" wrote:

Still shopping for my first bird. Curious as to how much oil usage is
considered "normal"?

My IO470N isn't down a pint after 25 hours and it's getting within
about 300 hours of reaching TBO.

OTOH the Cherokee 180 I used to fly managed 8 to 10 hours per quart on
the O-360 and that was considered good.

Roger Halstead (K8RI & ARRL life member)
(N833R, S# CD-2 Worlds oldest Debonair)
www.rogerhalstead.com