I use SAE 5W-30 Signature Series 100% Synthetic Motor Oil with a M1-212 or K&N HP-211 with 6qts every 5000.
http://www.amsoil.com/shop/by-product/motor-oil/gasoline/sae-5w-30-signature-series-100-percent-synthetic-motor-oil/?code=ASLQT-EA&zo=1667299.jpg[/url]
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The Steelership service dept oil failed it sheard its self out of grade.
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That's pretty common with GDI engines.
It isn't advisable to extend intervals, unless miles are mostly highway cruising.
Right now, running Motul 5W 30 in the SHO, with a Mobil1 filter. Will be performing LOF in the coming weeks, and shipping off the Motul, with about 5K miles on it, for UOA, along with a bout an 8K miles sample of Castol Edge 0 weight from my GDI CX-5.
Will be refilling with Motul again, but with an Amsoil filter this time.
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