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Mustang Forums
2011-2014 Mustangs
Engine/Tuning
Official GT 5.0/Boss 302 UOA thread
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<blockquote data-quote="UnleashedBeast" data-source="post: 12531174" data-attributes="member: 112023"><p>You could get away with a 30 grade lubricant if only driving the car on the street or drag racing. Ford really confused a lot of people with this 5W-50 specification. The reason for the spec was "worst case scenario" driving situation (i.e. extended road course racing sessions). Most buyers will never drive their car in this manner.</p><p></p><p>There is a guy with a Ferrari, 10W-60 is recommended for road racing, 5W-40 for everything else. He is using 5W-20 because it's nothing more than a grocery getter and all that's required for proper oil pressure for gentle street driving. It's how you drive the car and the climate you are in.</p></blockquote><p></p>
[QUOTE="UnleashedBeast, post: 12531174, member: 112023"] You could get away with a 30 grade lubricant if only driving the car on the street or drag racing. Ford really confused a lot of people with this 5W-50 specification. The reason for the spec was "worst case scenario" driving situation (i.e. extended road course racing sessions). Most buyers will never drive their car in this manner. There is a guy with a Ferrari, 10W-60 is recommended for road racing, 5W-40 for everything else. He is using 5W-20 because it's nothing more than a grocery getter and all that's required for proper oil pressure for gentle street driving. It's how you drive the car and the climate you are in. [/QUOTE]
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Official GT 5.0/Boss 302 UOA thread
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