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SVT Shelby GT500
Official UOA thread with oil poll
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<blockquote data-quote="UnleashedBeast" data-source="post: 11006089" data-attributes="member: 112023"><p>Overall, you have a first UOA that is common to all Shelby engines from the factory fill. I'm adding your information to the Excel spreadsheet list. Thanks again for the TBN information. I now know the estimated mileage limits of MC 5W-50 (~7,500 miles - Ford got that part right).</p><p></p><p>Silicon was in red (critical) because of the sealers used in assembly. This will reduce each oil change and will remain around ~20 ppm. </p><p></p><p>Oxidation was in red (critical)....I don't understand why. It was less than 60..odd.</p><p></p><p>Viscosity was orange (abnormal) because the lubricant has sheared down to a light 40 grade. No worries there, Ford wants it to shear. 50 grade lubricants are too viscous for use in this engine. </p><p></p><p></p><p></p><p><strong>Fe (iron) - 27 ppm</strong> </p><ul> <li data-xf-list-type="ul">Wear metal - common range for first MC oil change interval</li> </ul><p></p><p><strong>Al (aluminum) - 10 ppm</strong></p><ul> <li data-xf-list-type="ul">Wear metal - common range for first MC oil change interval</li> </ul><p></p><p><strong>Cu (copper) - 34 ppm </strong></p><ul> <li data-xf-list-type="ul">Wear metal - common range for first MC oil change interval</li> </ul><p></p><p><strong>Pb (lead) - 17 ppm </strong></p><ul> <li data-xf-list-type="ul">Wear metal - common range for first MC oil change interval</li> </ul><p></p><p><strong>Sn (Tin) - 0 ppm</strong></p><ul> <li data-xf-list-type="ul">Wear metal - common range for first MC oil change interval</li> </ul><p></p><p><strong>Si (silicon) - 315</strong></p><ul> <li data-xf-list-type="ul">Dirt from leak in air filter or <em><strong>assembly process</strong></em>, possible anti-foaming additive in engine lubricants, or <strong><em>from sealers used in the engine during assembly</em></strong>. This will decrease every oil change and drop to normal by the 4th oil change.</li> </ul> <ul> <li data-xf-list-type="ul">Number is high due to the assembly process and sealants used. Common to every Shelby on the first oil change.</li> </ul><p></p><p><strong>Ca (calcium) - 2016 ppm</strong></p><ul> <li data-xf-list-type="ul">Detergent additive</li> </ul><p></p><p><strong>Moly (molybdenum) - 41 ppm</strong></p><ul> <li data-xf-list-type="ul">Anti-wear additive - primary substitute for decreased levels of ZDDP (Zn and P)</li> </ul><p></p><p><strong>B (boron) - 189 ppm</strong></p><ul> <li data-xf-list-type="ul">Anti-wear additive - primary substitute for decreased levels of ZDDP (Zn and P)</li> </ul><p></p><p><strong>Zn (zinc) - 779 ppm</strong></p><ul> <li data-xf-list-type="ul">Primary anti-wear additive</li> </ul><p></p><p><strong>P (phosphorous) - 686 ppm</strong></p><ul> <li data-xf-list-type="ul">Primary anti-wear additive</li> </ul><p></p><p><strong>TBN (total base number) - 2.53</strong></p><ul> <li data-xf-list-type="ul">Factored number of remaining detergent additives. This keeps engine oils from turning acidic to prevent eating the metals within an engine. Less than 1.0 is considered critical. Oil could have been used an estimated 2,500-3,500 more miles. This is my FIRST UOA with TBN on Motorcraft. Thanks again!</li> </ul><p></p><p><strong>Viscosity @100 13.5 (19.9 virgin)</strong></p><ul> <li data-xf-list-type="ul">Normal for MC 5W-50. It sheared to a very light 40 grade lubricant, and I'm surprised it didn't shear any more than this after 5,000 miles.</li> </ul><p></p><p><strong>Oxidation 46</strong></p><ul> <li data-xf-list-type="ul">Base stock "rusting" - still in normal usable range.</li> </ul><p></p><p><strong>Nitration 18</strong></p><ul> <li data-xf-list-type="ul">Not important to know this under most circumstances for engine lubricants.</li> </ul><p></p><p><strong>Fuel dilution <1</strong></p><ul> <li data-xf-list-type="ul">Fuel discovered in the oil was less than 1%. I'm not surprised, the Shelby engine properly tuned never dilutes engine oil.</li> </ul><p></p><p><strong>Soot/Water <.1</strong></p><ul> <li data-xf-list-type="ul">Soot matter and water less than 1% - this means no coolant leaks and good filtration.</li> </ul></blockquote><p></p>
[QUOTE="UnleashedBeast, post: 11006089, member: 112023"] Overall, you have a first UOA that is common to all Shelby engines from the factory fill. I'm adding your information to the Excel spreadsheet list. Thanks again for the TBN information. I now know the estimated mileage limits of MC 5W-50 (~7,500 miles - Ford got that part right). Silicon was in red (critical) because of the sealers used in assembly. This will reduce each oil change and will remain around ~20 ppm. Oxidation was in red (critical)....I don't understand why. It was less than 60..odd. Viscosity was orange (abnormal) because the lubricant has sheared down to a light 40 grade. No worries there, Ford wants it to shear. 50 grade lubricants are too viscous for use in this engine. [B]Fe (iron) - 27 ppm[/B] [LIST]Wear metal - common range for first MC oil change interval[/LIST] [B]Al (aluminum) - 10 ppm[/B] [LIST]Wear metal - common range for first MC oil change interval[/LIST] [B]Cu (copper) - 34 ppm [/B] [LIST]Wear metal - common range for first MC oil change interval[/LIST] [B]Pb (lead) - 17 ppm [/B] [LIST]Wear metal - common range for first MC oil change interval[/LIST] [B]Sn (Tin) - 0 ppm[/B] [LIST]Wear metal - common range for first MC oil change interval[/LIST] [B]Si (silicon) - 315[/B] [LIST]Dirt from leak in air filter or [I][B]assembly process[/B][/I], possible anti-foaming additive in engine lubricants, or [B][I]from sealers used in the engine during assembly[/I][/B]. This will decrease every oil change and drop to normal by the 4th oil change.[/LIST] [LIST]Number is high due to the assembly process and sealants used. Common to every Shelby on the first oil change.[/LIST] [B]Ca (calcium) - 2016 ppm[/B] [LIST]Detergent additive[/LIST] [B]Moly (molybdenum) - 41 ppm[/B] [LIST]Anti-wear additive - primary substitute for decreased levels of ZDDP (Zn and P)[/LIST] [B]B (boron) - 189 ppm[/B] [LIST]Anti-wear additive - primary substitute for decreased levels of ZDDP (Zn and P)[/LIST] [B]Zn (zinc) - 779 ppm[/B] [LIST]Primary anti-wear additive[/LIST] [B]P (phosphorous) - 686 ppm[/B] [LIST]Primary anti-wear additive[/LIST] [B]TBN (total base number) - 2.53[/B] [LIST]Factored number of remaining detergent additives. This keeps engine oils from turning acidic to prevent eating the metals within an engine. Less than 1.0 is considered critical. Oil could have been used an estimated 2,500-3,500 more miles. This is my FIRST UOA with TBN on Motorcraft. Thanks again![/LIST] [B]Viscosity @100 13.5 (19.9 virgin)[/B] [LIST]Normal for MC 5W-50. It sheared to a very light 40 grade lubricant, and I'm surprised it didn't shear any more than this after 5,000 miles.[/LIST] [B]Oxidation 46[/B] [LIST]Base stock "rusting" - still in normal usable range.[/LIST] [B]Nitration 18[/B] [LIST]Not important to know this under most circumstances for engine lubricants.[/LIST] [B]Fuel dilution <1[/B] [LIST]Fuel discovered in the oil was less than 1%. I'm not surprised, the Shelby engine properly tuned never dilutes engine oil.[/LIST] [B]Soot/Water <.1[/B] [LIST]Soot matter and water less than 1% - this means no coolant leaks and good filtration.[/LIST] [/QUOTE]
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