Lee Ayrton

On Tue, 20 Feb 2007, Earle Horton wrote:

> "abomb69" <abuse@verizon.net> wrote in message
> news:bxPCh.13982$gj4.964@newssvr14.news.prodigy.ne t...
>> Anyone know of a good chemical to clean out and engine when
>> you change the oil?? besides just new oil....I have a 93 cherokee
>> with 225k on it and wanted to maybe get rid of some sludge
>> build up inside.
>>
> What makes you think there is sludge inside? If there has been any kind of
> responsible maintenance, there probably isn't. If there is and you try to
> flush it with chemicals, you are going to loosen all that crud and get it
> into your oil pump, clog your filter, make the bypass open, and then it goes
> straight to your bearings. If you're serious about cleaning out the inside
> of the engine, then you have to remove the oil pan and the valve cover to do
> it right.
[snip]

I would worry that clearing out the varnish would loosen up all the oil
leaks.



--
"We began to realize, as we plowed on with the destruction of New Jersey,
that the extent of our American lunatic fringe had been underestimated."
Orson Wells on the reaction to the _War Of The Worlds_ broadcast.

Lee Ayrton

On Tue, 20 Feb 2007, Earle Horton wrote:

> "abomb69" <abuse@verizon.net> wrote in message
> news:bxPCh.13982$gj4.964@newssvr14.news.prodigy.ne t...
>> Anyone know of a good chemical to clean out and engine when
>> you change the oil?? besides just new oil....I have a 93 cherokee
>> with 225k on it and wanted to maybe get rid of some sludge
>> build up inside.
>>
> What makes you think there is sludge inside? If there has been any kind of
> responsible maintenance, there probably isn't. If there is and you try to
> flush it with chemicals, you are going to loosen all that crud and get it
> into your oil pump, clog your filter, make the bypass open, and then it goes
> straight to your bearings. If you're serious about cleaning out the inside
> of the engine, then you have to remove the oil pan and the valve cover to do
> it right.
[snip]

I would worry that clearing out the varnish would loosen up all the oil
leaks.



--
"We began to realize, as we plowed on with the destruction of New Jersey,
that the extent of our American lunatic fringe had been underestimated."
Orson Wells on the reaction to the _War Of The Worlds_ broadcast.

L.W. \(Bill\) Hughes III

Ditto. Just change oil every three thousand miles and contaminates will not
begin to make slug to begin with.
God Bless America, Bill 0|||||||0
mailto:-------------------- http://www.----------.com/

"RoyJ" <spamless@microsoft.net> wrote in message
news:TCYCh.4903$Jl.2141@newsread3.news.pas.earthli nk.net...
> Use a good detergent oil and an new oil filter, change the oil as soon
> as the oil looks slightly dirty. If it is dirty in 100 miles, you know
> you have a sludge issue. If it is still clean at 1000 miles, the enngine
> has been taken care of. Takes longer but MUCH easier on an old engine
> than dumping in any kind of solvent or additive.
>
> abomb69 wrote:
>
> > Anyone know of a good chemical to clean out and engine when you change
the
> > oil?? besides just new oil....I have a 93 cherokee with 225k on it and
> > wanted to maybe get rid of some sludge build up inside.
> >
> >
> >



--
Posted via a free Usenet account from http://www.teranews.com

L.W. \(Bill\) Hughes III

Ditto. Just change oil every three thousand miles and contaminates will not
begin to make slug to begin with.
God Bless America, Bill 0|||||||0
mailto:-------------------- http://www.----------.com/

"RoyJ" <spamless@microsoft.net> wrote in message
news:TCYCh.4903$Jl.2141@newsread3.news.pas.earthli nk.net...
> Use a good detergent oil and an new oil filter, change the oil as soon
> as the oil looks slightly dirty. If it is dirty in 100 miles, you know
> you have a sludge issue. If it is still clean at 1000 miles, the enngine
> has been taken care of. Takes longer but MUCH easier on an old engine
> than dumping in any kind of solvent or additive.
>
> abomb69 wrote:
>
> > Anyone know of a good chemical to clean out and engine when you change
the
> > oil?? besides just new oil....I have a 93 cherokee with 225k on it and
> > wanted to maybe get rid of some sludge build up inside.
> >
> >
> >



--
Posted via a free Usenet account from http://www.teranews.com

L.W. \(Bill\) Hughes III

Ditto. Just change oil every three thousand miles and contaminates will not
begin to make slug to begin with.
God Bless America, Bill 0|||||||0
mailto:-------------------- http://www.----------.com/

"RoyJ" <spamless@microsoft.net> wrote in message
news:TCYCh.4903$Jl.2141@newsread3.news.pas.earthli nk.net...
> Use a good detergent oil and an new oil filter, change the oil as soon
> as the oil looks slightly dirty. If it is dirty in 100 miles, you know
> you have a sludge issue. If it is still clean at 1000 miles, the enngine
> has been taken care of. Takes longer but MUCH easier on an old engine
> than dumping in any kind of solvent or additive.
>
> abomb69 wrote:
>
> > Anyone know of a good chemical to clean out and engine when you change
the
> > oil?? besides just new oil....I have a 93 cherokee with 225k on it and
> > wanted to maybe get rid of some sludge build up inside.
> >
> >
> >



--
Posted via a free Usenet account from http://www.teranews.com

L.W. \(Bill\) Hughes III

The mark of a good detergent oil.
God Bless America, Bill 0|||||||0
mailto:-------------------- http://www.----------.com/

"billy ray" <billy_ray@SPAMfuse.net> wrote in message
news:aa0c0$45dc6002$422afc51$11184@FUSE.NET...
> When my son-in-law first tried Mobil Clean I was surprised when at 3k the
> oil was as black as coal.



--
Posted via a free Usenet account from http://www.teranews.com

L.W. \(Bill\) Hughes III

The mark of a good detergent oil.
God Bless America, Bill 0|||||||0
mailto:-------------------- http://www.----------.com/

"billy ray" <billy_ray@SPAMfuse.net> wrote in message
news:aa0c0$45dc6002$422afc51$11184@FUSE.NET...
> When my son-in-law first tried Mobil Clean I was surprised when at 3k the
> oil was as black as coal.



--
Posted via a free Usenet account from http://www.teranews.com

L.W. \(Bill\) Hughes III

The mark of a good detergent oil.
God Bless America, Bill 0|||||||0
mailto:-------------------- http://www.----------.com/

"billy ray" <billy_ray@SPAMfuse.net> wrote in message
news:aa0c0$45dc6002$422afc51$11184@FUSE.NET...
> When my son-in-law first tried Mobil Clean I was surprised when at 3k the
> oil was as black as coal.



--
Posted via a free Usenet account from http://www.teranews.com

abomb69

This engine has 225k on it and there is no line from the CCV tube to the air
box, its gone.



"Mike Romain" <romainm@sympatico.ca> wrote in message
news:45dc68e1$0$18139$9a6e19ea@unlimited.newshosti ng.com...
> abomb69 wrote:
>> Anyone know of a good chemical to clean out and engine when you change
>> the oil?? besides just new oil....I have a 93 cherokee with 225k on it
>> and wanted to maybe get rid of some sludge build up inside.
>>
>>
>>
>
> I would first open the oil cap and have a close look at it and inside as
> far as I could see. If the engine has sludge, usually some is under the
> oil cap.
>
> The second place to check, and this will show the slightest amount of
> sludge buildup, is the CCV tube. I unhook it from the intake and see if I
> can blow through it into the valve cover. If it still blows clear, there
> is no sludge. If it is plugged, then some carb cleaner sprayed into the
> tube with a ream from a wire or air blow to clear it is in order.
>
> If this CCV tube plugs with sludge, then oil will start spitting into the
> air filter. At this point I would think on using a cleaner in the engine.
>
> I prefer to use a pint of ATF into the oil about 100 miles before a
> change. This seems to clean them out without being to harsh on them.
>
> Some folks actually remove the valve cover to make sure they get all the
> sludge out, but I wouldn't do this unless I couldn't keep that CCV tube
> clear and then I would want to pull the oil pan too.
>
> 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)
>

abomb69

This engine has 225k on it and there is no line from the CCV tube to the air
box, its gone.



"Mike Romain" <romainm@sympatico.ca> wrote in message
news:45dc68e1$0$18139$9a6e19ea@unlimited.newshosti ng.com...
> abomb69 wrote:
>> Anyone know of a good chemical to clean out and engine when you change
>> the oil?? besides just new oil....I have a 93 cherokee with 225k on it
>> and wanted to maybe get rid of some sludge build up inside.
>>
>>
>>
>
> I would first open the oil cap and have a close look at it and inside as
> far as I could see. If the engine has sludge, usually some is under the
> oil cap.
>
> The second place to check, and this will show the slightest amount of
> sludge buildup, is the CCV tube. I unhook it from the intake and see if I
> can blow through it into the valve cover. If it still blows clear, there
> is no sludge. If it is plugged, then some carb cleaner sprayed into the
> tube with a ream from a wire or air blow to clear it is in order.
>
> If this CCV tube plugs with sludge, then oil will start spitting into the
> air filter. At this point I would think on using a cleaner in the engine.
>
> I prefer to use a pint of ATF into the oil about 100 miles before a
> change. This seems to clean them out without being to harsh on them.
>
> Some folks actually remove the valve cover to make sure they get all the
> sludge out, but I wouldn't do this unless I couldn't keep that CCV tube
> clear and then I would want to pull the oil pan too.
>
> 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)
>