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SVT Shelby GT500
Official UOA thread with oil poll
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<blockquote data-quote="UnleashedBeast" data-source="post: 15379677" data-attributes="member: 112023"><p>Experts would say it's more biased on HT/HS than on Kinematic Viscosity. I'd say 3.5 cP is more than ideal for a street driven car with a stock thermostat. For a HPDE car, you'd want greater than 4 cP.</p><p></p><p>I've seen Motorcraft shear down to 10.x cSt before, virgin it was 19.x cSt or greater. </p><p></p><p>Appears Amsoil 0W-40 is shearing to a heavy 30 grade lubricant, as I expected from a lubricant with a wide multi-viscosity. No concerns, as I was running a mid 30 grade viscosity in my GT500 for thousands of miles with excellent results. Wear metals from the sample above are beautiful, I'd be smiling if that was my engine. Keep using <strong><a href="http://www.amsoil.com/shop/by-product/motor-oil/gasoline/sae-0w-40-signature-series-100-percent-synthetic-motor-oil/?code=AZFQT-EA&zo=1859448" target="_blank">Amsoil AZF 0W-40</a></strong> for street use only. For HPDE, please use <strong><a href="http://www.amsoil.com/shop/by-product/motor-oil/gasoline/sae-5w-50-signature-series-100-percent-synthetic-motor-oil/?code=AMRQT-EA&zo=1859448" target="_blank">Amsoil AMR 5W-50</a></strong>.</p></blockquote><p></p>
[QUOTE="UnleashedBeast, post: 15379677, member: 112023"] Experts would say it's more biased on HT/HS than on Kinematic Viscosity. I'd say 3.5 cP is more than ideal for a street driven car with a stock thermostat. For a HPDE car, you'd want greater than 4 cP. I've seen Motorcraft shear down to 10.x cSt before, virgin it was 19.x cSt or greater. Appears Amsoil 0W-40 is shearing to a heavy 30 grade lubricant, as I expected from a lubricant with a wide multi-viscosity. No concerns, as I was running a mid 30 grade viscosity in my GT500 for thousands of miles with excellent results. Wear metals from the sample above are beautiful, I'd be smiling if that was my engine. Keep using [B][URL="http://www.amsoil.com/shop/by-product/motor-oil/gasoline/sae-0w-40-signature-series-100-percent-synthetic-motor-oil/?code=AZFQT-EA&zo=1859448"]Amsoil AZF 0W-40[/URL][/B] for street use only. For HPDE, please use [B][URL="http://www.amsoil.com/shop/by-product/motor-oil/gasoline/sae-5w-50-signature-series-100-percent-synthetic-motor-oil/?code=AMRQT-EA&zo=1859448"]Amsoil AMR 5W-50[/URL][/B]. [/QUOTE]
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Official UOA thread with oil poll
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