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My UOA result..


Gjrforce
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Neutral Newbie
(edited)

Sample Date 8/12/2006

Unit Age 98229km

Time on Fluid 7500km

Time on Filter 7500km

Fluid Maint. Not Changd

Filter Maint. Abn | Sev Not Changd

Fluid Typical | Base Royal purple 10W40

Iron (Fe) 150 | 400 15

Chromium (Cr) 20 | 40 0.9

Nickel (Ni) 5 | 10 0.7

Titanium (Ti) --- | --- 0

Silver (Ag) 2 | 5 0

Aluminum (Al) 40 | 90 8.3

Lead (Pb) 50 | 150 0

Copper (Cu) 155 | 250 12

Tin (Sn) 10 | 25 0

Silicon (Si) 30 | 75 11

Sodium (Na) 9 8.1

Potassium (K) 18 0

Boron (B) 1 13

Barium (Ba) 2 0.3

Molybdenum (Mo) 112 | 120 180

Magnesium (Mg) 11 433

Calcium (Ca) 2818 | 3200 2854

Phosphorus (P) 982 | 1050 1045

Zinc (Zn) 1123 | 1200 1184

Sulfur (S) 12046 15000

Cadmium (Cd) 0.3

Manganese (Mn) 1

Vanadium (V) 0

H2O(%) 0.129

Soot(%) 1 0

Oxidation(PA) 118 36

Nitratrion(PA) 56 16

Sulfation(PA) 75 28

ZDDP 0 20

TAN 3.31

Kv@100

Edited by Gjrforce
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Neutral Newbie

Proton waja 1.6, 4G18P

80% city , 20% highway.

 

gentle driving style, most speed between 70-100km/H with 1.5k-2.5k RPM.

 

the site is close due to backup..

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Neutral Newbie

i bought the test kit, actually is a bottle from mxxxxxxxxs.com

and send it to USA via singpost...SGD9 with registed mail..the kit is about SGD38

 

u will get the result within 2 weeks..

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Neutral Newbie
(edited)

seems like elevated wear.

see what ken4 replies in sgoil or wait for genie to advise here [;)]

 

why r u using 10w40 for a less than 160k km car?

Edited by Cyberet
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Neutral Newbie

I went with Blackstone Labs simply because they provide an easy to read report with a basic interpretation of the results. Wearcheck also show extremely elevated numbers for sulphur which is odd.

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Another term of this is SOAP sampling, commonly used in aviation industries.

Please note that it is not the figures that matter. What ppls looking for is the CHANGES in those figures. You need to collect another oil sample for anaylsis again (say 3 months later) and to make comparison to these figures to see which areas of the "metals" are deteriorating or giving you alarm.

 

Right now,this set of readings is meaningless.

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It is not meaningless, these figure can be use as a baseline. The figure can also be use to compare with other analysis with similar engine.

 

Overall wear rate is pretty normal, except the shearing down from 13.8cSt to 12.8cSt, Oxidation 36, Nitration 16 & Sulfation 28 is very very low which show's the oil is not overheat or even stress(good cooling system).

 

Si at 11 is very low which also indicate his air filter is tight and working fine.

Pb at 0 also show's very good bearing protection(very mild driving).

Sulfur at 15000 are a form of additives, nothing meaningfull about these figure though.

Zn of 1184 does shows that is oil is pretty robust in anti-wear additives.

 

TAN 3.31 look pretty high though for 7.5k usage as normally the oil acid fighting additives are depleted when TAN exceed 1/2 of the oil virgin TBN number(RP 10w40 virgin TBN are 10.4)

 

So overall, pretty normal result. Can try something thinner next oil change, maybe a 30wt.

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Neutral Newbie

i edited my post for better reading..

 

 

 

Sample Date 8/12/2006

Unit Age 98229km

Time on Fluid 7500km

Time on Filter 7500km

Fluid Maint. Not Changd

Filter Maint. Abn | Sev Not Changd

Fluid~~~~~~~~~~~~Typical | Base~~~~~~Royal purple 10W40

Iron (Fe)~~~~~~~~~~~150 | 400~~~~~~~~~~15

Chromium (Cr)~~~~~~~~20 | 40~~~~~~~~~~~0.9

Nickel (Ni)~~~~~~~~~~~~5 | 10~~~~~~~~~~~0.7

Titanium (Ti)~~~~~~~~~~--- | ---~~~~~~~~~~~0

Silver (Ag)~~~~~~~~~~~~2 | 5~~~~~~~~~~~~0

Aluminum (Al)~~~~~~~~~40 | 90~~~~~~~~~~~8.3

Lead (Pb)~~~~~~~~~~~50 | 150~~~~~~~~~~~0

Copper (Cu)~~~~~~~~~155 | 250~~~~~~~~~~12

Tin (Sn)~~~~~~~~~~~~~10 | 25~~~~~~~~~~~0

Silicon (Si)~~~~~~~~~~~30 | 75~~~~~~~~~~~11

Sodium (Na)~~~~~~~~~~~~~9~~~~~~~~~~~8.1

Potassium (K)~~~~~~~~~~~~18~~~~~~~~~~~0

Boron (B)~~~~~~~~~~~~~~~1~~~~~~~~~~~13

Barium (Ba)~~~~~~~~~~~~~~2~~~~~~~~~~~0.3

Molybdenum (Mo)~~~~~~112 | 120~~~~~~~~~180

Magnesium (Mg)~~~~~~~~~~~11~~~~~~~~~433

Calcium (Ca)~~~~~~~~2818 | 3200~~~~~~~~2854

Phosphorus (P)~~~~~~~982 | 1050~~~~~~~~1045

Zinc (Zn)~~~~~~~~~~~1123 | 1200~~~~~~~~1184

Sulfur (S)~~~~~~~~~~~~~~~12046~~~~~~~15000

Cadmium (Cd)~~~~~~~~~~~~~~~~~~~~~~~0.3

Manganese (Mn)~~~~~~~~~~~~~~~~~~~~~~1

Vanadium (V)~~~~~~~~~~~~~~~~~~~~~~~~0

H2O(%)~~~~~~~~~~~~~~~~~~~~~~~~~~~0.129

Soot(%)~~~~~~~~~~~~~~~~1~~~~~~~~~~0

Oxidation(PA)~~~~~~~~~~~~118~~~~~~~~~36

Nitratrion(PA)~~~~~~~~~~~~56~~~~~~~~~~16

Sulfation(PA)~~~~~~~~~~~~75~~~~~~~~~~~28

ZDDP~~~~~~~~~~~~~~~~~0~~~~~~~~~~~20

TAN~~~~~~~~~~~~~~~~~~~~~~~~~~~~~3.31

Kv@100©~~~~~~~~~~14.1 | 14.5~~~~~~~~12.8

White Metal~~~~~~~~~~~~~~~~~~~~~~~~NONE

Babbitt~~~~~~~~~~~~~~~~~~~~~~~~~~~NONE

Precipitate~~~~~~~~~~~~~~~~~~~~~~~~~NONE

Silt~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~NONE

Debris~~~~~~~~~~~~~~~~~~~~~~~~~~~~NONE

Dirt~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~NONE

Appearance~~~~~~~~~~~~~~~~~~~~~~~~NORML

Odor~~~~~~~~~~~~~~~~~~~~~~~~~~~~~NORML

H2O(Emul)~~~~~~~~~~~~~~~~~~~~~~~~~NEG

H2O(Free)~~~~~~~~~~~~~~~~~~~~~~~~~NEG

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Now that I can say I can read it easier, looks OK. Nothing to be alarmed about. Your driving style must be really gentle.

 

Go thinner.

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TAN 3.31 look pretty high though for 7.5k usage as normally the oil acid fighting additives are depleted when TAN exceed 1/2 of the oil virgin TBN number(RP 10w40 virgin TBN are 10.4)

 

IMHO, 30wt should be approached with a little caution as most 30wt would have lower TBN values.

 

E.g. for Schaeffer 5w30 with TBN of 7.5, using the comparison above, TAN is 0.5x TBN = 3.75

 

If trying out 30wt, would suggest the oil change and UOA be done at 5k instead.

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True, the benefit of TAN test when compare to TBN is it's acid number (growth rate) is pretty consistent (provided same driving pattern & condition) among different brand oil.

Unlike TBN which can shows wide disparity (TBN depletion rate) with different oil.

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