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#4711322 - 03/30/18 09:45 AM A UOA with more questions than answers...
mrsilv04 Offline


Registered: 12/08/06
Posts: 8161
Loc: Illinois
Here's the background information. This is a UOA of the bulk oil that my mechanic uses. It is supposedly a 5w-30. It is supposedly from a place called RILCO (Rock Island Lubricants Company).

This was taken after it had been in the crankcase for 1000 miles. There appears to be coolant contamination, which was the reason for the UOA in the first place

Is it just me, or does this oil seem to be quite weak (Calcium, Phosphorus, Zinc) and quite thin (cSt of 7.8)... especially since it was only in use for 1000 miles?

I was under the impression that coolant thickens up oil, not thins it out.




_________________________
2004 Silverado - on its 3rd Jasper engine in less than one year.

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#4711331 - 03/30/18 09:49 AM Re: A UOA with more questions than answers... [Re: mrsilv04]
Virtus_Probi Offline


Registered: 06/25/15
Posts: 3825
Loc: New England
Unless that oil has been very severely diluted by coolant, it looks like terrible stuff.
Might be worth searching the PQIA for that oil company.
_________________________
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#4711340 - 03/30/18 09:54 AM Re: A UOA with more questions than answers... [Re: mrsilv04]
Donald Offline


Registered: 03/21/04
Posts: 20251
Loc: Upstate NY
Is your coolant overflow showing a loss of coolant?

There are better UOA that show %Oxidation and TBN.

I say its cheap oil.
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#4711356 - 03/30/18 10:06 AM Re: A UOA with more questions than answers... [Re: mrsilv04]
ARCOgraphite Offline


Registered: 05/17/09
Posts: 11853
Loc: N.H, U.S.A.
What was the Potassium PPM ( or % )?

Looks like a 20 grade. That aint no 30 grade.
AAlso ZN ( +phos) at or below API limits of acceptability.


Edited by ARCOgraphite (03/30/18 10:07 AM)
_________________________
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#4711359 - 03/30/18 10:07 AM Re: A UOA with more questions than answers... [Re: Donald]
mrsilv04 Offline


Registered: 12/08/06
Posts: 8161
Loc: Illinois
Originally Posted By: Donald
Is your coolant overflow showing a loss of coolant?

There are better UOA that show %Oxidation and TBN.

I say its cheap oil.


Yes, loss at the overflow.

I was only looking for confirmation of contamination... but ended up being shocked on how badly the test results looked. Wasn't going to pay extra for a TBN for an oil that I don't intend to use in the long term.
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#4711362 - 03/30/18 10:08 AM Re: A UOA with more questions than answers... [Re: mrsilv04]
bullwinkle Offline


Registered: 10/09/04
Posts: 7486
Loc: Cincinnati, OH, USA
That looks like a 20, I think a VOA would be a good move before using it again.
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#4711373 - 03/30/18 10:17 AM Re: A UOA with more questions than answers... [Re: mrsilv04]
PimTac Offline


Registered: 03/04/17
Posts: 3527
Loc: Soviet State of Washington
Just some quick searching led me to think that RILCO is just a distributor. This is substandard oil compared to most brands right off of any shelf.


http://www.rilcoinc.com
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#4711389 - 03/30/18 10:27 AM Re: A UOA with more questions than answers... [Re: mrsilv04]
Snagglefoot Offline


Registered: 12/31/17
Posts: 1339
Loc: Alberta
All the concentrations are woefully low. Maybe itís olive oil?

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#4711430 - 03/30/18 11:15 AM Re: A UOA with more questions than answers... [Re: mrsilv04]
dogememe Offline


Registered: 04/15/17
Posts: 453
Loc: SF BAY AREA, CA
methinks you should send in a sample of new oil.
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#4711435 - 03/30/18 11:18 AM Re: A UOA with more questions than answers... [Re: mrsilv04]
SirTanon Offline


Registered: 06/23/14
Posts: 1992
Loc: Phoenix, Arizona - USA
I wouldn't be surprised if they started with some kind of decent oil, and 'blended' it (read "thinned it out") with something even cheaper to arrive at the product they delivered to your mechanic.
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#4711450 - 03/30/18 11:32 AM Re: A UOA with more questions than answers... [Re: mrsilv04]
deven Offline


Registered: 06/28/05
Posts: 3264
Loc: Massachusetts
Find a new mechanic or bring your own oil. I am always leery of shops that use name brands that I have never heard of. A reputable shop usually uses known brand oil even if it is in a 55 gallon drum.
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#4711454 - 03/30/18 11:34 AM Re: A UOA with more questions than answers... [Re: mrsilv04]
MolaKule Offline


Registered: 06/05/02
Posts: 18968
Loc: Iowegia - USA
Quote:
That looks like a 20 [Grade], I think a VOA would be a good move before using it again.


For sure and nothing to write Momma about.

Most likely Total Bulk oil.
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#4711497 - 03/30/18 12:23 PM Re: A UOA with more questions than answers... [Re: mrsilv04]
ZZman Offline


Registered: 03/17/08
Posts: 5506
Loc: Michigan
That oil looks horrible and cheap.
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#4711522 - 03/30/18 12:41 PM Re: A UOA with more questions than answers... [Re: mrsilv04]
4WD Offline


Registered: 09/21/10
Posts: 6053
Loc: Texas/International
Put some motor oil in that poor engine already Ö
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#4711535 - 03/30/18 01:03 PM Re: A UOA with more questions than answers... [Re: deven]
69GTX Offline


Registered: 09/23/15
Posts: 3742
Loc: Connecticut
Originally Posted By: deven
Find a new mechanic or bring your own oil. I am always leery of shops that use name brands that I have never heard of. A reputable shop usually uses known brand oil even if it is in a 55 gallon drum.


This.

I'd just find a new mechanic as this one seems oblivious to oil quality and current standards. What else do they scrimp on?
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2002 Lincoln Cont 4.6L DOHC/ 81K mi /PPlat 5w30/FUG XG2
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