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From: wenmang on 22 Oct 2009 11:18
Hi, all, I hope that somebody knows what is the possible cause of my
2001 Corolla "leaking" engine oil. I have to add 1 qt every week about
~300 miles. I have not seen smoke or dripping oil from my car, google
it but didn't find satisfied answer, hope that you guys may have a
better suggestion what may went wrong.
From: JoeSpareBedroom on 22 Oct 2009 11:28
"wenmang" <ll.unlimited09(a)gmail.com> wrote in message
news:49b0d47d-e498-4ce0-abe7-6c89d11f1bef(a)p9g2000vbl.googlegroups.com...
> Hi, all, I hope that somebody knows what is the possible cause of my
> 2001 Corolla "leaking" engine oil. I have to add 1 qt every week about
> ~300 miles. I have not seen smoke or dripping oil from my car, google
> it but didn't find satisfied answer, hope that you guys may have a
> better suggestion what may went wrong.


How many miles on the car?


From: C. E. White on 22 Oct 2009 11:30

"wenmang" <ll.unlimited09(a)gmail.com> wrote in message
news:49b0d47d-e498-4ce0-abe7-6c89d11f1bef(a)p9g2000vbl.googlegroups.com...
> Hi, all, I hope that somebody knows what is the possible cause of my
> 2001 Corolla "leaking" engine oil. I have to add 1 qt every week
> about
> ~300 miles. I have not seen smoke or dripping oil from my car,
> google
> it but didn't find satisfied answer, hope that you guys may have a
> better suggestion what may went wrong.


Place a large sheet of white paper under he engine (the whole area
under the engine) when you park the car for the night and see if there
are any drips on the paper the next morning. If there are none, it is
possible that the engine is dripping oil only when the engine is
running and therefore little if any drips into the parking space. In
this case the leaking oil is spread around on the highway and not so
obvious. It doesn't take a very large drip to lose a quart every 300
miles. It you don't see any drips on the paper after the car sets for
the evening, start it up and let it run for 20 minutes or so and see
if any oil shows up on the paper while the engine is ruinning. If not,
then you probably don't have a significant leak.

If you don't have a significant leak, then you are buring the oil up
in the engine. Untill it get really bad, you probably won't see any
smoke from the exhaust, except possibly for a few seconds after you
start the car up. The catalytic convertor can handle small amounts of
oil and prevent the exhaust from smoking. When it starts buring a lot
more, eventually the convertor will quit working and then you will see
the smoke.

How many miles on the engine? How often do you change your oil? What
viscosity oil do you use?

Ed


From: wenmang on 22 Oct 2009 11:39
On Oct 22, 11:30 am, "C. E. White" <cewhi...(a)removemindspring.com>
wrote:
> "wenmang" <ll.unlimite...(a)gmail.com> wrote in message
>
> news:49b0d47d-e498-4ce0-abe7-6c89d11f1bef(a)p9g2000vbl.googlegroups.com...
>
> > Hi, all, I hope that somebody knows what is the possible cause of my
> > 2001 Corolla "leaking" engine oil. I have to add 1 qt every week
> > about
> > ~300 miles. I have not seen smoke or dripping oil from my car,
> > google
> > it but didn't find satisfied answer, hope that you guys may have a
> > better suggestion what may went wrong.
>
> Place a large sheet of white paper under he engine (the whole area
> under the engine) when you park the car for the night and see if there
> are any drips on the paper the next morning. If there are none, it is
> possible that the engine is dripping oil only when the engine is
> running and therefore little if any drips into the parking space. In
> this case the leaking oil is spread around on the highway and not so
> obvious. It doesn't take a very large drip to lose a quart every 300
> miles. It you don't see any drips on the paper after the car sets for
> the evening, start it up and let it run for 20 minutes or so and see
> if any oil shows up on the paper while the engine is ruinning. If not,
> then you probably don't have a significant leak.
>
> If you don't have a significant leak, then you are buring the oil up
> in the engine. Untill it get really bad, you probably won't see any
> smoke from the exhaust, except possibly for a few seconds after you
> start the car up. The catalytic convertor can handle small amounts of
> oil and prevent the exhaust from smoking. When it starts buring a lot
> more, eventually the convertor will quit working and then you will see
> the smoke.
>
> How many miles on the engine? How often do you change your oil? What
> viscosity oil do you use?
>
> Ed

My car has over 120K on it and it started "leaking" around 80K, I
started adding oil for over past 2 years and I had another Corolla
which did the same thing and fortunately its engine was rebuilt within
the warranty period(about 30K miles). I know the cost of rebuilding
engine is so high that I may have to live with it by adding oil every
week, but it looks like too much to me nowadays.
From: Jeff Strickland on 22 Oct 2009 20:31

"wenmang" <ll.unlimited09(a)gmail.com> wrote in message
news:49b0d47d-e498-4ce0-abe7-6c89d11f1bef(a)p9g2000vbl.googlegroups.com...
> Hi, all, I hope that somebody knows what is the possible cause of my
> 2001 Corolla "leaking" engine oil. I have to add 1 qt every week about
> ~300 miles. I have not seen smoke or dripping oil from my car, google
> it but didn't find satisfied answer, hope that you guys may have a
> better suggestion what may went wrong.

Get a white towel wet and wipe the back of your car. If the towel turns
black, that's where the oil is going.

Wipe first along the trunk lid as high as you can get above the tail pipe.
Check the rag. Wipe again, but lower. If the oil is going into the
combustion chamber(s), the rag should get oily somewhere near the bumper.







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