u/unitedpassenger1

Do I have to use Kia's Total Quartz or Mobil SP oil?

I've been using mobil1 Extended performance/extended life the gold/silver label 5w30.

Is there much of a difference.

I know our engines are know for carbon build up, rings, valves, etc.

Total Quartz oil is like $70. Mobil1 is like $40. I've used amsoil before too. How's liquimoly in these motors?

Are the OE filters much different than the mobil1, fram, etc?

I have put 37.5k miles on the car my self, changes every 3k miles.

Previous owner did about 18k, so about 55k miles on car. There's was no service records from previous owner on carfax.

Anyways, what oil do I go with to keep it fairly healthy till it needs a tear down and clean up, rebuild?

I bought my car used at 17,909 miles. Since then I've been doing my own oil changes every 3k miles. I've done around 12 oil changes now, I'm currently at 55,157 miles. Using Mobil1 filters and 5w-30 oil.

Last oil change was around 3,000 miles. I noticed I was a quart under from fill line before changing.

After that change, around 700 miles in, I decided to check and was 1/4 above the low line, so 3/4 of a quart low. 100 miles later which was today I checked and was 1/4 qt. under full fill line.

I smell oil when I get on it.

I dont see a puddle under the car. Later today, I am going to pull the under tray off and check if there is a puddle and check the turbo for leaks.

Has anybody experienced oil consumption around 55,000 miles? I always let it warm up and cool down before driving off or turning off.

Is my warranty voided? Am I screwed?..