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SVT Shelby GT500
API SM/SN certified engine oils, and why NOT to use them.
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<blockquote data-quote="UnleashedBeast" data-source="post: 10243336" data-attributes="member: 112023"><p>the API codes, SM...SL...SJ...</p><p></p><p>is the current standard they are currently honoring as accepted. Different codes have different standards that must be met in order to qualify. SM has ZDDP capped at 800 PPM. Older SL...SJ formulations were in the 1300's IIRC. </p><p></p><p>Less ZDDP in most formulations led to more wear. </p><p></p><p>5W-20 in a supercharged engine, yeah right! You would want a "heavy" 30 weight oil as a minimum, almost a 40 weight.</p></blockquote><p></p>
[QUOTE="UnleashedBeast, post: 10243336, member: 112023"] the API codes, SM...SL...SJ... is the current standard they are currently honoring as accepted. Different codes have different standards that must be met in order to qualify. SM has ZDDP capped at 800 PPM. Older SL...SJ formulations were in the 1300's IIRC. Less ZDDP in most formulations led to more wear. 5W-20 in a supercharged engine, yeah right! You would want a "heavy" 30 weight oil as a minimum, almost a 40 weight. [/QUOTE]
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API SM/SN certified engine oils, and why NOT to use them.
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