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2011-2014 Mustangs
Engine/Tuning
Synthetic Oils
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<blockquote data-quote="Jimmysidecarr" data-source="post: 10783448" data-attributes="member: 11681"><p>We(Royal Purple) recommend 1,000 miles to insure complete ring seating before changing to our synthetic oils. Because of the factory fill being 5W-20 synthetic blend, I drained it out at 500 miles in my 04 and filled back up with 5W-30 Motorcraft conventional and ran that till 2500, just to be sure.</p><p></p><p>IMHO 500 miles is too soon unless you have been at WOT for 1/2 the time the car has been running.</p><p></p><p>Nothing bad will happen, you are just giving up on the possibility of better sealed cylinders.</p><p></p><p>If everyone was running Amsoil, Redline or <strong><span style="color: DarkOrchid">Royal Purple</span></strong>, running 5W-20 would become a non-issue.:-D:beer:</p></blockquote><p></p>
[QUOTE="Jimmysidecarr, post: 10783448, member: 11681"] We(Royal Purple) recommend 1,000 miles to insure complete ring seating before changing to our synthetic oils. Because of the factory fill being 5W-20 synthetic blend, I drained it out at 500 miles in my 04 and filled back up with 5W-30 Motorcraft conventional and ran that till 2500, just to be sure. IMHO 500 miles is too soon unless you have been at WOT for 1/2 the time the car has been running. Nothing bad will happen, you are just giving up on the possibility of better sealed cylinders. If everyone was running Amsoil, Redline or [B][COLOR="DarkOrchid"]Royal Purple[/COLOR][/B], running 5W-20 would become a non-issue.:-D:beer: [/QUOTE]
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