I've seen lots of videos showing the Valvoline restore and protect oil helping to clean engines. If you go that route I'd recommend replacing the oil filter after 500 miles then again at 2500 miles to keep the filters new for any gunk that gets freed up.
I would recommend the engine flush made by Liqui Moly which you put in and run for 15 minutes, then dump out. it works quite well, and you might need to do a number of flushes to get most of it out.
I had some on a Kia Soul. They were fine. Lasted 45,000 miles. If I was on a tight budget I would look at them.
I bought a 2023 kia soul specifically for uber and just hit 100000 miles. Only problems ive had are nails in my tires and recently changed my rear brake pads.
I have a Kia optima and Kias are notorious oil guzzlers. The engine system clean is for waiting too long I guess. Engine air filter and cabin air filter are easy to replace yourself.
I replaced the OEM plugs with NGK, they lasted about 15,000 miles. Burger Tuning told me that 15k is about all you'll get out of NGKs in these cars.
The only issue I’ve had with this car is the battery, they usually die in about 3years, but they are AGM batteries and they usually die within that Timeframe in Phoenix,AZ Anyway because of the Heat.
Unfortunately it’s proprietary Hyundai/Kia part. It’s now a common problem that if the alternator goes, so does the transmission because the low voltage fries the shift control solenoid. Lots of people complaining about this and yes, it happened to me.
The only issue i have with seltos are the headlights performance, its pretty bad on highways.
Today (September 2025) I heard a something rattling from the rear, then a clunk and then the noise stopped. When we got home I got under to have a look I found that one of two bolts holding the top shock absorber mount was missing & that the other one was loose too.
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