PQIA is a fantastic resource and I appreciate all their efforts. Does anyone know if blends have ever been compared side by side? Curious
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2014 Sonata GLS 2.4
PZL HM 5w20, OEM, 5k mi
http://www.pennzoil.com/motor-oil/pennzoil-high-mileage

2013 Santa Fe Sp 2.0T
PP 5w30, OEM, 5k mi