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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: 10821491" data-attributes="member: 112023"><p>anything from 1,000 to 1,500 miles is fine. Your piston rings have already seated, and it's OK to change to a full synthetic.</p><p></p><p></p><p></p><p>If this is a factor, using a thinner lubricant would yield excessive noise in the valve train. I noticed no such noise, even with Motorcraft 5W-50 in my engine for 2,000 miles (was a heavy 30 grade). </p><p></p><p>Motorcraft 5W-50 shears to a light 40 grade lubricant in 1,000 miles. By the time it achieves 2,000 miles...it's already a heavy 30 grade. This is why I have adopted the use of <strong><a href="https://www.amsoil.com/catalog.aspx?GroupID=172&zo=1859448" target="_blank">Amsoil 10W-40 AMO</a></strong> in my Shelby. It retains the viscosity unlike Motorcraft 5W-50. My UOAs with Amsoil are far superior to every UOA from GT500s using Motorcraft 5W-50 with similar miles, driving condition, and mods.</p><p></p><p>After oil pressure testing, I may find that <strong><a href="http://www.amsoil.com/catalog.aspx?GroupID=176&zo=1859448" target="_blank">Amsoil 10W-30 ATM</a></strong> is an even better choice for both the Boss and the Shelby. Testing coming soon.</p></blockquote><p></p>
[QUOTE="UnleashedBeast, post: 10821491, member: 112023"] anything from 1,000 to 1,500 miles is fine. Your piston rings have already seated, and it's OK to change to a full synthetic. If this is a factor, using a thinner lubricant would yield excessive noise in the valve train. I noticed no such noise, even with Motorcraft 5W-50 in my engine for 2,000 miles (was a heavy 30 grade). Motorcraft 5W-50 shears to a light 40 grade lubricant in 1,000 miles. By the time it achieves 2,000 miles...it's already a heavy 30 grade. This is why I have adopted the use of [B][URL="https://www.amsoil.com/catalog.aspx?GroupID=172&zo=1859448"]Amsoil 10W-40 AMO[/URL][/B] in my Shelby. It retains the viscosity unlike Motorcraft 5W-50. My UOAs with Amsoil are far superior to every UOA from GT500s using Motorcraft 5W-50 with similar miles, driving condition, and mods. After oil pressure testing, I may find that [B][URL="http://www.amsoil.com/catalog.aspx?GroupID=176&zo=1859448"]Amsoil 10W-30 ATM[/URL][/B] is an even better choice for both the Boss and the Shelby. Testing coming soon. [/QUOTE]
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2012-2013 Boss 302 Mustang
Something to consider when the oil change topic happens here
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