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Re: Cheat sheet for newbies reading UOA's [Re: TucsonDon] #1811156 03/10/10 06:55 AM
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widman Offline
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Boron is basically an anti-oxidant Has some anti-wear in different cases. You won't see a decent group I oil without it, but it can often be left out of group II, group III, or traditional synthetics.

Here is one of the most complete wear metals charts I've seen in a while
Wear Metals guide in PDF

Re: Cheat sheet for newbies reading UOA's [Re: widman] #1852888 04/11/10 06:42 AM
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CourierDriver Offline
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I like the report, Im gonna get a degree in chemistry someday. Im glad someone out there knows how to make all those elements stay together for 500k miles. Me, I just want it to run right, bottom line. amen


For the price of 2 oil changes, you could have bought a bicycle used....and be free... 73 and
holding..
Re: Cheat sheet for newbies reading UOA's [Re: CourierDriver] #1853472 04/11/10 04:38 PM
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Re: Cheat sheet for newbies reading UOA's [Re: Steve S] #1897854 05/20/10 05:07 PM
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widman Offline
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One more thing. A lot more engines are being assembled these days with Moly rings. Ring wear will show up as or with the moly that might be used as an antiwear/antioxidant.

Condemnation limits vary per engine and engine construction. Those that are published (CAT, Cummins, Detroit, etc.) are extremely high and not close to what is obtainable.

Re: Cheat sheet for newbies reading UOA's [Re: Bambam] #2333676 07/31/11 09:06 PM
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sm00thpapa Offline
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This is not bad but what about what the numbers mean? I mean is a high number or low number better for each category?


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Re: Cheat sheet for newbies reading UOA's [Re: TucsonDon] #2389160 09/27/11 06:42 AM
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Originally Posted By: TucsonDon
I think Boron is becoming part of the additive pack of some oils ... Rotella CJ-4 comes to mind as having increased the Boron.


+1 After looking at some VOA results on different oils, PCMO and Diesel, BORON is becoming more of an additive in Synthetic and Dino oils.


I get by with a little help from my friends....listen with your eyes....it's the ONLY way to believe what you hear...
Re: Cheat sheet for newbies reading UOA's [Re: Bambam] #2658196 06/18/12 11:34 PM
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ARHND Offline
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How about the different tolerances of each equipment. All factories have their own, so, to be sure of each UOA you should also know the different allowances or minimuns.

Re: Cheat sheet for newbies reading UOA's [Re: RWEST] #2757895 09/29/12 07:48 AM
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skyship Offline
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Originally Posted By: RWEST
So, to help out an oil-dork, what should the numbers be for a multi-vis, say, RTS 5-40? confused


Blackstones will give averages for most engine types for you to compare results to. For a 1.9 TD I would not be too concerned until the Iron was over 50 ppm, Aluminium over 10, Chrome or Lead over 5 and Silicon from the air filter over 20.

The 5W/40 figures for a UOA are as follows:
SUS Vis at 210F: 66 - 78
cSt Vis at 100C: 11.9 - 15.3
Flash in F: > 410
Fuel % < 2
Antifreeze: 0
Water% < 0.1
Insolubles: < 0.8
TBN: > 1 (Normal) >3 (Severe service)

The trend is as important as the actual figures for wear metals, as every engine is subject to different use and to complicate matters you might have a temporary particle streak occur and rebuilt or new engines produce different figures.

The car should be driven at normal speeds for half an hour plus before draining the oil and the sample taken mid stream into a clean container.


Last edited by skyship; 09/29/12 07:58 AM.
Re: Cheat sheet for newbies reading UOA's [Re: widman] #4490527 08/16/17 07:21 PM
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link is gone.

Re: Cheat sheet for newbies reading UOA's [Re: Steve S] #4490528 08/16/17 07:21 PM
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Link NA

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