Thank you guys for info.
Originally Posted by WhizkidTN
IMHO: I'd run Castrol Edge 0W-40 oil, Top Tier 93 octane gas and install some quality OCCs in the PCV loops. Keep your OCI at under 5K miles. Do the "Italian Tune-up" on occasion (safely of course). I'd also recommend the Fram Ultra over the OEM oil filters. Enjoy the car!
FWIW: From talking to some local Kia techs, just putting on some better flowing cat-backs (with HFC to stay somewhat legal) nets a very nice bump in power.
I am really not sure about 0w-40 oil viscosity (not recommended by manual, was actually thinking about 10w30 vs 5w30). I am planning to run 93 octane only. Debating if I should go for catch can in PCV loop vs PCV + CCV. I was planning 6k miles but now think that 5k will be better. I usually accelerate in high RPM, so not sure how often Italian tune will be needed. Currently thinking about going OEM for first oil change. I feel exhaust loud enough for me, right now, not planning to trade silence over performance.
Originally Posted by Brigadier
Hyundai/KIA use a two stage injection cycle to keep the intake valves clean. Run top tier 92 gas.
It is visible in this video.
Run a d1G2 or d2 oil and don't extend the OCI. OEM filters are great filters and cheap on Amazon.
My Santa Fe has 36k miles, avg speed is 27 mph, and no indication of valve deposits. I think KIA/Hyundai have it handled.
Thanks, I assume the blue fume was the mix of gas and air going over intake valves.