Oil guzzler OCI conundrum

[PhilloBeddow]

Check the production date on the door plaque
May 21, 2018 to February 28, 2019
Does his fall into that range?

Kia's web VIN check isn't as thorough as Hyundai's, you might be better served by dropping into your local Kia service department and having someone run the VIN on the spot for PI1805

https://static.nhtsa.gov/odi/tsbs/2020/MC-10173259-0001.pdf

I'd start thinking about piston soaks/idle flushes and 5w40 oil
It's made some leeway on a '17 Optima and '11 Sonata I look after
The Optima was burning 1qt every ~200 miles, and fouling out a spark plug every ~10 days
1 piston soak and idle flush + Delo 5w40 took that up to ~1,000 miles per qt
Hopefully rinsing and repeating will improve the situation

I checked the VIN at https://kiaengineclasssettlement.com/ and it says the settlement doesn’t apply to this vehicle.

Thanks for mentioning that though - I’ll have to take a trip to a Kia dealer if they’ve got a more accurate lookup tool.

And yes, a piston soak is already being thought about.

 

[Chris142]

I wonder if the original owner went the full distance on the oci instead of every 5k or so.

 

[michaelluscher]

I wonder if the original owner went the full distance on the oci instead of every 5k or so.

The consensus seems that the (Normal Service Interval) 1 year/7,500 OCIs on GDI Hyundai/Kia engines are a disaster waiting to happen
Even more of an L if it's on cheap bulk 5w20

Severe service is every 3 months, 3,750 miles which I'm not sure if anyone is doing

Newer models step up severe service to 6m/5k

 

[Donald]

New guy on the engine assembly line who lined up all the ring gaps?

 

[PhilloBeddow]

New guy on the engine assembly line who lined up all the ring gaps?

We’ve got to find this guy and talk to his supervisor!

Do we have him set them at 120 degrees or 0, 180, 0 from now on ?



(Good one!)

 

[bugeye]

The consensus seems that the (Normal Service Interval) 1 year/7,500 OCIs on GDI Hyundai/Kia engines are a disaster waiting to happen
Even more of an L if it's on cheap bulk 5w20

Severe service is every 3 months, 3,750 miles which I'm not sure if anyone is doing

Newer models step up severe service to 6m/5k

Daughters 2013 Sonata purchased at 5900 miles had one dealer oil change. I have been doing the oil/filter changes with PP or PUP at less than 3700 miles and less than 6 months. I keep detailed records with pictures to document if any questions. She has a short commute of ~ 6 miles. Some weekend highway trips 30 miles or more. She parks in garage at home and at work. She is gentle on a car, cold starts with low rpms. She does some car maintenance, air filters, wiper blades, checking fluid levels. Engine is starting to use some oil at ~ 70,000 miles. Car has been trouble free for the last 10 years.

 

[johnmyster]

Assuming linear degredation of oil, the average mileage of the oil in the sump is defined by this equation, solved for your situation, you could replace the oil indefinitely at 1 quart per 1,000 miles and the highest average miles on the oil in the sump would get to 5,000 miles and no more.

Not that I'm suggesting to never change the oil - linear degredation isn't completely realistic. But this illustrates how effective such an aggressive oil consumption is at keeping the average fill in the sump quite young, mileage-wise.View attachment 255200

this assumes contaminants are consumed at the same rate as the good oil

else it's a distillery

 

[PhilloBeddow]

this assumes contaminants are consumed at the same rate as the good oil

else it's a distillery

I think that's a fair assumption. Particles >20 micron are trapped in the oil filter and larger (millimeter) chunks will settle to the bottom of the sump. All others will stay in suspension before exiting via the tailpipe.

And I'm in bourbon country - what's wrong with distilleries ?

 

[Cruisin'n5thgear]

this assumes contaminants are consumed at the same rate as the good oil

else it's a distillery

True.