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10-16-2009, 03:58 PM
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#1 |
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Registered User
Join Date: Aug 2007
Location: orlando
Posts: 456
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Grey stuff in my oil
I'm hoping someone can tell me what the grey stuff is that's floating, and swirling around in my drained engine oil. It looks kinda psychadelic (you old guys like me will know what that is). I was told by a 37 year machine shop veteran that it's lead shot remnants from the P/O having the block SHOT PEENED. I have super high oil pressure at the guage, and only low pressure at the rockers; and the same guy said somewhere in a gallery that lead shot is plugging it up. If any of you concurr with that, it appears I may have to disassemble the engine and get it out using a pressure washer to dislodge it. Anyone heard of this? ALSO; When I removed my oil filter, there's two 7/16" bolts holding in the FILTER BY-PASS(?). Can I remove them and check that for a clog? Thanks.............
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10-16-2009, 05:10 PM
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#2 |
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Active Member
 
Join Date: Jul 2007
Location: Centrally located between Houston, Austin and Waco. BCS area.
Posts: 7,947
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Re: Grey stuff in my oil
It seems hard to believe that someone would go through the trouble of doing that to an engine and not clean it completely. The shot peening process was and is used to strengthen metal surfaces by blasting them with shot. Most of this work is done to stress parts like rods, cranks, etc.
More than likely, your problem is moisture form the sounds of it. Either leaking head gasket or condensation buildup. If the engine has a lot of miles and the crank shaft, rod and crank bearings are fairly worn you will lose some of that oil pressure. I would stick and aftermarket oil gauge in the engine and make sure that you are reading correctly. Also, sludge buildup in the rods may plug them up preventing some of the oil from getting to the top. One of my old engines had just a dribble coming out of the rockers for may years with no problems. |
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10-16-2009, 08:55 PM
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#3 |
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Registered User
Join Date: Mar 2009
Location: independence mo
Posts: 2,111
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Re: Grey stuff in my oil
Around here the Catapillar shop will analyze your oil for not that much.They break it down and tell you what particles are in it.
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I'm not as good as I once was, But I'm as good once as I ever was. |
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10-16-2009, 08:58 PM
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#4 |
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Registered User
Join Date: Aug 2009
Location: St. Paul MN.
Posts: 1,996
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Re: Grey stuff in my oil
I agree with 68gmsee on this [condensation]
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10-16-2009, 10:22 PM
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#5 |
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406 Powered
Join Date: Aug 2009
Location: waynesville,n.c.
Posts: 877
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Re: Grey stuff in my oil
Sounds like condensation...........
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70 GMC 68 c10 2002 silverado 72 4x4 |
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10-16-2009, 10:26 PM
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#6 |
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Registered User
Join Date: Mar 2009
Location: Central Texas
Posts: 140
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Re: Grey stuff in my oil
Sounds like water to me. Bad head gasket or cracked head, not very good news.
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10-17-2009, 12:11 AM
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#7 |
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Hollister Road Co.
Join Date: Apr 2005
Location: Houston
Posts: 6,134
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Re: Grey stuff in my oil
The don't use lead shot for shot peening. Its steel shot they use. And I agree with the water being the issue. Most likely head or manifold leak.
You don't want high pressure at the rockers. As long as you have oil coming out of the rockers your good. To much top end pressure will cause smoking out the exhaust. |
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10-17-2009, 05:00 AM
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#8 |
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Registered User
Join Date: Aug 2007
Location: orlando
Posts: 456
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Re: Grey stuff in my oil
Thanks all; for your input. I'll pressure test the coolant system.
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10-17-2009, 05:42 AM
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#9 |
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Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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Re: Grey stuff in my oil
do you have a working PCV system? not haveing one will cause excess moisture and high sludge builup
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