Originally Posted by ediamiam
I have a 2012 kia sorento with that 2.4 engine, 135k miles. I wouldn't worry about it. Just make sure it gets regular oil changes and watch the level.
Use SN Plus Dexos1 Gen2 oils in 5w30. All city driving change 3.5K ..... mix driving change 5K.
If the oil turns black in 1K, shorten OCIs until it corrects itself to turn black in 2K. That M.O. kept all my engines clean. I even drove vehicles to junkyards 18 years later on a clear dipstick, when rust took over horribly and dangerously.
I never purchase oils that turn black quickly - or don't turn black until ridiculously long in the OCI. Just recently I purchased two jugs of Mobil-1 EP on rebate. It's the same brand name that I've dealt with before, in both Vanilla and Super Synthetic), that turns black quickly. I'm hoping the EP doesn't.
The oil is rated super-duper. If it weren't for that and my GDI recently purchased, I never would have purchased it.
Same with Valvoline synthetic on the opposite spectrum. My experience with that oil shows a very lengthy amount of time it stays clear on the dipstick. I don't like that. If it weren't for me testing the new Advanced Formula next on my GDI, I never would have bought it.
The two brands that change colors in relatively normal fashion are Castrol and Pennzoil. I haven't tried Quaker State in a while. Last time I did (2004) my magnetic oil pan bolt was loaded with silver shavings when drained. That really ticked me-off. I don't buy house/store brands either. No Supertech and no NAPA.. I stick with the leaders and wish I could stomach paying big-bucks for Amsoil , Red Line, Schaeffers.......etc.
