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2012-2013 Boss 302 Mustang
Something to consider when the oil change topic happens here
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<blockquote data-quote="UnleashedBeast" data-source="post: 14230349" data-attributes="member: 112023"><p>You believe that a base oil with a 30 grade viscosity @ 100*C will maintain a high HT/HS like found in a 50 grade viscosity? In other words, you are saying that a lubricant which shears from a 50 grade down to a 30 grade will still have a HT/HS of a 50 grade lubricant, not a 30 grade?</p><p></p><p>The high lead and iron you see were from track cars. Let's see a sample of Motorcraft 5W-50 after two weekends of track sessions and some street highway miles/street racing. You'd come to respect the difference. I'd ask Darren to give us a sample beyond the 4 hours he intends to provide, but I'm assuming he would decline. </p><p></p><p>Again, today I lean towards Amsoil's newer XLO formulation for the reasons mentioned prior. AMO is dated, ready to retire.</p></blockquote><p></p>
[QUOTE="UnleashedBeast, post: 14230349, member: 112023"] You believe that a base oil with a 30 grade viscosity @ 100*C will maintain a high HT/HS like found in a 50 grade viscosity? In other words, you are saying that a lubricant which shears from a 50 grade down to a 30 grade will still have a HT/HS of a 50 grade lubricant, not a 30 grade? The high lead and iron you see were from track cars. Let's see a sample of Motorcraft 5W-50 after two weekends of track sessions and some street highway miles/street racing. You'd come to respect the difference. I'd ask Darren to give us a sample beyond the 4 hours he intends to provide, but I'm assuming he would decline. Again, today I lean towards Amsoil's newer XLO formulation for the reasons mentioned prior. AMO is dated, ready to retire. [/QUOTE]
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2012-2013 Boss 302 Mustang
Something to consider when the oil change topic happens here
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