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SVT Shelby GT500
Schaeffer 5W50 Oil
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<blockquote data-quote="UnleashedBeast" data-source="post: 10543677" data-attributes="member: 112023"><p>I would like to add that I am noticing another advantage of using a true synthetic lubricant with less viscosity spread. Say a 10W-40/20W-50 versus a 5W-50.</p><p></p><p>NOACK Volatility:</p><p></p><p>Amsoil 10W-40 = 6.7%</p><p>Amsoil 20W-50 = 6.5%</p><p>Red Line & Schaeffer 5W-50 = 8.5-8.9%</p><p>MC, Castrol, Pennzoil, and Mobil 1 5W-50 = 10-12% *Thanks to a group III base stock*</p><p></p><p>The lower the % of NOACK Volatility, the less % of mass of the engine lubricant that is lost due to evaporation and burn off. If you have less evaporation, this means less of the engine lubricant is lost in vapor form, less will be sucked out of the crankcase via the PCV system, and less will be injected back into your supercharger. </p><p></p><p>For those with catch cans, this means longer intervals before you have to dump what is caught. </p><p></p><p>For those without, this means decreased contamination to the supercharger rotors and intercooler. </p><p></p><p>Just food for thought.</p></blockquote><p></p>
[QUOTE="UnleashedBeast, post: 10543677, member: 112023"] I would like to add that I am noticing another advantage of using a true synthetic lubricant with less viscosity spread. Say a 10W-40/20W-50 versus a 5W-50. NOACK Volatility: Amsoil 10W-40 = 6.7% Amsoil 20W-50 = 6.5% Red Line & Schaeffer 5W-50 = 8.5-8.9% MC, Castrol, Pennzoil, and Mobil 1 5W-50 = 10-12% *Thanks to a group III base stock* The lower the % of NOACK Volatility, the less % of mass of the engine lubricant that is lost due to evaporation and burn off. If you have less evaporation, this means less of the engine lubricant is lost in vapor form, less will be sucked out of the crankcase via the PCV system, and less will be injected back into your supercharger. For those with catch cans, this means longer intervals before you have to dump what is caught. For those without, this means decreased contamination to the supercharger rotors and intercooler. Just food for thought. [/QUOTE]
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