Only 115K mi, regular synthetic oil changes, using up about a court
every 5K mi. With no leaks present, and quite sure it's not worn rings
.... what else could cause oil consumtion if anything? It does set quite
a bit because we usually use it only for light hauling trailers ect.
thanks

 

I believe when my engine is down one quart of oil, it is time for an oil
change. My old 88 with 315K km on it still can hold to that. Though it
getting closer to 3000 miles now than 5K. ;-)

Synthetic acts like thin oil. Are you using the recommended grade of
oil? To thin and it will pass on through.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)

josh00@comcast.net wrote:
>
> Only 115K mi, regular synthetic oil changes, using up about a court
> every 5K mi. With no leaks present, and quite sure it's not worn rings
> ... what else could cause oil consumtion if anything? It does set quite
> a bit because we usually use it only for light hauling trailers ect.
> thanks

 

I believe when my engine is down one quart of oil, it is time for an oil
change. My old 88 with 315K km on it still can hold to that. Though it
getting closer to 3000 miles now than 5K. ;-)

Synthetic acts like thin oil. Are you using the recommended grade of
oil? To thin and it will pass on through.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)

josh00@comcast.net wrote:
>
> Only 115K mi, regular synthetic oil changes, using up about a court
> every 5K mi. With no leaks present, and quite sure it's not worn rings
> ... what else could cause oil consumtion if anything? It does set quite
> a bit because we usually use it only for light hauling trailers ect.
> thanks

 

I believe when my engine is down one quart of oil, it is time for an oil
change. My old 88 with 315K km on it still can hold to that. Though it
getting closer to 3000 miles now than 5K. ;-)

Synthetic acts like thin oil. Are you using the recommended grade of
oil? To thin and it will pass on through.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)

josh00@comcast.net wrote:
>
> Only 115K mi, regular synthetic oil changes, using up about a court
> every 5K mi. With no leaks present, and quite sure it's not worn rings
> ... what else could cause oil consumtion if anything? It does set quite
> a bit because we usually use it only for light hauling trailers ect.
> thanks

 

A quart in 5k miles does not seem like much. Maybe it is just more than the
vehicle used new. What can be bad for an engine is short trips, where the
engine is not warmed up completely. This will cause water to accumulate in
the crankcase. Water is bad for internal engine components.

How can you be sure it is not worn rings? My Suburban did not show visible
smoke, when burning a quart every 300 miles.

One thing to check is your PCV or CCV system. I am not sure which you have,
but if you have excessive crankcase pressure, you could be getting oil
forced out the exhaust, and oil leaks won't be far in the future.

Earle

<josh00@comcast.net> wrote in message
news:1146953579.823586.25040@u72g2000cwu.googlegro ups.com...
> Only 115K mi, regular synthetic oil changes, using up about a court
> every 5K mi. With no leaks present, and quite sure it's not worn rings
> ... what else could cause oil consumtion if anything? It does set quite
> a bit because we usually use it only for light hauling trailers ect.
> thanks
>

 

A quart in 5k miles does not seem like much. Maybe it is just more than the
vehicle used new. What can be bad for an engine is short trips, where the
engine is not warmed up completely. This will cause water to accumulate in
the crankcase. Water is bad for internal engine components.

How can you be sure it is not worn rings? My Suburban did not show visible
smoke, when burning a quart every 300 miles.

One thing to check is your PCV or CCV system. I am not sure which you have,
but if you have excessive crankcase pressure, you could be getting oil
forced out the exhaust, and oil leaks won't be far in the future.

Earle

<josh00@comcast.net> wrote in message
news:1146953579.823586.25040@u72g2000cwu.googlegro ups.com...
> Only 115K mi, regular synthetic oil changes, using up about a court
> every 5K mi. With no leaks present, and quite sure it's not worn rings
> ... what else could cause oil consumtion if anything? It does set quite
> a bit because we usually use it only for light hauling trailers ect.
> thanks
>

 

A quart in 5k miles does not seem like much. Maybe it is just more than the
vehicle used new. What can be bad for an engine is short trips, where the
engine is not warmed up completely. This will cause water to accumulate in
the crankcase. Water is bad for internal engine components.

How can you be sure it is not worn rings? My Suburban did not show visible
smoke, when burning a quart every 300 miles.

One thing to check is your PCV or CCV system. I am not sure which you have,
but if you have excessive crankcase pressure, you could be getting oil
forced out the exhaust, and oil leaks won't be far in the future.

Earle

<josh00@comcast.net> wrote in message
news:1146953579.823586.25040@u72g2000cwu.googlegro ups.com...
> Only 115K mi, regular synthetic oil changes, using up about a court
> every 5K mi. With no leaks present, and quite sure it's not worn rings
> ... what else could cause oil consumtion if anything? It does set quite
> a bit because we usually use it only for light hauling trailers ect.
> thanks
>

 

josh00 did pass the time by typing:
> Only 115K mi, regular synthetic oil changes, using up about a court
> every 5K mi. With no leaks present, and quite sure it's not worn rings
> ... what else could cause oil consumtion if anything? It does set quite
> a bit because we usually use it only for light hauling trailers ect.

Best way to find out if it is rings is to do a compression test.

You can also pull the plugs and see if any of them are fouled with
oil/carbon.

You might have bad valve seals on the intake side and the engine is
sucking oil in. But with the mileage, rings are not out of the question.

--
DougW

 

josh00 did pass the time by typing:
> Only 115K mi, regular synthetic oil changes, using up about a court
> every 5K mi. With no leaks present, and quite sure it's not worn rings
> ... what else could cause oil consumtion if anything? It does set quite
> a bit because we usually use it only for light hauling trailers ect.

Best way to find out if it is rings is to do a compression test.

You can also pull the plugs and see if any of them are fouled with
oil/carbon.

You might have bad valve seals on the intake side and the engine is
sucking oil in. But with the mileage, rings are not out of the question.

--
DougW

 

josh00 did pass the time by typing:
> Only 115K mi, regular synthetic oil changes, using up about a court
> every 5K mi. With no leaks present, and quite sure it's not worn rings
> ... what else could cause oil consumtion if anything? It does set quite
> a bit because we usually use it only for light hauling trailers ect.

Best way to find out if it is rings is to do a compression test.

You can also pull the plugs and see if any of them are fouled with
oil/carbon.

You might have bad valve seals on the intake side and the engine is
sucking oil in. But with the mileage, rings are not out of the question.

--
DougW