4G (2011+) Optima
I have a 2011 kia optima sx that I have 220K miles on that the engine ran fine. My oil pressure light has never come on previously. I took my car to Valvoline - provided Mobil 1 oil and filter for the change. My son took the car afterwards around 2-1/2 hours away then a return trip of 2-1/2/...