Engine recall and oil consumption link? - Kia Forum

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post #1 of 11 (permalink) Old 10-06-2018, 09:18 AM Thread Starter
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Engine recall and oil consumption link?

I took my 2012 Sorento, 4cyl, bought new, in for the SC147 recall early this year. It passed. But ever since then it's been using oil very rapidly. I started smelling fumes in the cabin from time to time, and had to top off the oil in between scheduled oil changes. It wasn't a leak, as there were never any oil puddles under the vehicle. Nor did I see oily smoke coming out the exhaust. The dealership has me on a monitoring schedule now, in which I bring in the car every 1,000 miles to have the oil consumption checked. I've always changed the oil on schedule, and never had this problem before they did the recall inspection. Has anyone had anything similar occur? TIA.

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post #2 of 11 (permalink) Old 10-06-2018, 09:28 AM
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Perhaps you could disclose type(conventional or synthetic) and brand oil you use and mileage on your ride now and what mileage "schedule" you're going by???
To smell oil in the cabin, there would have to be some kind of seepage in a "hot" area of the engine compartment/engine.
Have you looked to see if there is a clean external motor or seepage from things like the valve cover or end seals?
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post #3 of 11 (permalink) Old 10-06-2018, 09:35 AM Thread Starter
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Thanks. I have ~128.5K on it now; was ~10K less than that when I had the recall done. I don't change my own oil & do not know how to check those points.
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post #4 of 11 (permalink) Old 10-06-2018, 09:46 AM
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Engine oil "seeping" from such areas will tend to also collect dust and dirt along with looking wet on the motor if you open the hood and just look at it. That's why I asked if the motor looked "clean". At 128 k miles I would seriously consider going to a "high mileage" formulated brand of motor oil. Our Spectra at similar mileage was consuming oil also, but has all but stopped by switching to a high mileage blend synthetic oil. Wherever you go for your oil changes ASK about it.
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post #5 of 11 (permalink) Old 10-06-2018, 01:55 PM
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That recall has nothing to do with or cause anything to do with oil consumption except for the fact that the oil level was raised by the new dip stick that is part of that recall. The old dip stick had a yellow handle on it, while the new dip stick after the recall has a orange handle for the US recall. My Sorento now holds a little over 5 quarts of oil. Raising the oil level may or may not add to oil consumption.

If you smell oil in the cabin then it has to be burnt oil that is leaking into something very hot under the hood of the car. Any oil that is burnt by the engine internally is going out the exhaust pipe which is out the back of the car and will not get into the cabin. About the only thing that gets hot enough to burn the oil is the exhaust manifold which is on the back of the engine. You need to get under the Sorento and on top of it to check for oil leaks on the back of the engine with the engine top plastic top cover removed.

Next, what is considered to much oil consumption? All engine use oil. They always have and always will. They have too or parts would go bad very quickly due to lack of lubrication. To get more gas mileage from a car drag is reduced. The drag on a car is not just from the air on the outside of the car but also from drag or resistance inside the car. The drag from the piston rings has been reduced to help make more power but the new rings are thinner and have less tension, there for they do not seal up as good as rings used 30 years ago. This adds to oil consumption but you also have to remember that old back in the 1970 1980 cars also needed to be overhauled around 100,000 miles. Here is a copy of a letter from RockAuto Parts about this topic:

Modern Engine Design & Oil Consumption
Tom's Story
The owners manual for the 2011 Mercedes E-Class says, "Depending on the driving style, the vehicle consumes up to 0.9 US qt (0.8 l) of oil over a distance of 600 miles (1000 km)." The 2011 Audi A3 owners manual states, "Depending on the way the vehicle is driven and the operating conditions, oil consumption can be up to 1/2 quart per 600 miles (0.5 liter per 2000 km)." With no further explanation in the owners manuals, I might assume that neither Mercedes nor Audi has yet achieved the tight tolerances built into the cast iron V8 that powers my 1971 Ford LTD. Its old 351 does not burn a 1/2 quart of oil every 600 miles, at least with my gentle "driving style."
"Burning oil" has long been associated with heavily worn engines that blow clouds of blue exhaust smoke and need expensive engine rebuilds. It is no surprise that car manufacturers carefully avoid the words "burning oil," but it is odd that they make no effort to explain why some engines now come from the factory designed to "consume" oil. With a little clarification, a car manufacturer could avoid having an owner believe the engine in his/her new car was not as well built as the engine in the car he/she traded in.
Various oils of different viscosities
A description of modern engine/oil technology could also emphasize the increased importance of regularly checking/adding engine oil. The owners manual for the 2011 Honda Civic says, "Engine oil level - Check every time you fill the fuel tank." Is that a relic left over from 1950s era owners manuals, or do Honda owners really need to check their oil "every time" they stop at a gas station?
Modern engine designs have been achieving better fuel economy by reducing the amount of energy needed to keep the internal pieces moving. This might mean making engine parts out of lighter weight metal alloys. It could also mean allowing pistons to move more freely in the cylinders, which unfortunately also lets more oil slip by the piston rings and be subsequently burned. The move to lower viscosity oils (ex. 0W-20 instead of 10W-30) and higher revving engines further encourages increased oil consumption.
But wait, I thought engines that burned oil wrecked catalytic converters. Zinc and phosphorous in engine oil are good for reducing valve train friction but bad for catalytic converters. Zinc and phosphorous levels in motor oil were quietly reduced as part of the new ILSAC GF-5 motor oil standard in 2010. The new oil standard meant new engine designs could send more oil residue out the exhaust without damaging catalytic converters.
Hopefully, the money spent on buying more engine oil is offset by less money spent on gasoline. Increased oil consumption is just one more reason owners of new cars need to be extra careful to use the correct oil for their engine. That old bottle of 10W-30 sitting on a garage shelf may not only clog various solenoids and orifices, but it could also damage the catalytic converters. Look under "Engine" in the RockAuto.com catalog to find the right "Motor Oil" for your specific car or truck.
One of these newer oil-consuming motors may still have problems (gasket leaks, etc.) if oil consumption increases over time. For example, it consumed 1.5 quarts between previous oil changes but now it is consuming 3 quarts.
I would follow those Honda owners manual instructions that say to check the engine oil level every time you stop for gas. Just ignore the dashing 1971 Ford owner using the neighboring gas pump. He may not bother to open his car's hood, but remember he has to stop at gas stations much more frequently than you do.
Tom Taylor,
RockAuto.com
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post #6 of 11 (permalink) Old 10-11-2018, 10:29 AM
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Maybe your PCV valve is not working right? It is made to burn off the oil vapors in the Crankcase. "Positive Crankcase Ventilation" it possibly is broken and sending excess oil vapors into the intake manifold? Check the out!

Some previous Hyundai/Kia vehicles: 2002 Santa Fe LX V6 AWD, 2005 Tucson LX V6 AWD, 2010 Tucson GLS 2.4L AWD, 2011 Sportage EX 2.4L AWD, 2015 Sorento Ex V6 AWD
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post #7 of 11 (permalink) Old 06-12-2019, 07:25 PM
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Same issue. Ready to get rid of it, but we love the vehicle...
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post #8 of 11 (permalink) Old 06-12-2019, 07:40 PM
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I have a 2012 that was used when we bought it. It had around 80,000 miles on it. We were told they used synthetic blend oil, so I used Valvoline 5W20 high mileage as recommended since we got it. (It is recommended after 75,000 miles.) I change the oil myself using Fram extra guard PH9688. This vehicle NEVER used more than a cup between 5000 mile oil changes. I took it to the dealer just after I changed the oil for the recall, SC147. They said they had to change the oil again, at no cost to me. After that, I checked the oil a few weeks later and NOTHING showing on the dipstick. Nearly 3 quarts to fill it back up. From then until now, it uses about a quart every 800 miles. There are NO LEAKS on it. I do not have the burnt oil smell. I have replaced the PCV valve twice... first with a high grade aftermarket and then with a Kia PCV. I had to add a quart again yesterday. This ALL started with the recall. Before that, there was minimal consumption. The vehicle has nearly 120,000 now. We love the vehicle, but this has to stop or I will have to get something else. @ over $4.50 a quart this is way too expensive.
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post #9 of 11 (permalink) Old 06-13-2019, 09:30 AM
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Quote:
Originally Posted by Pops296 View Post
I have a 2012 that was used when we bought it. It had around 80,000 miles on it. We were told they used synthetic blend oil, so I used Valvoline 5W20 high mileage as recommended since we got it. (It is recommended after 75,000 miles.) I change the oil myself using Fram extra guard PH9688. This vehicle NEVER used more than a cup between 5000 mile oil changes. I took it to the dealer just after I changed the oil for the recall, SC147. They said they had to change the oil again, at no cost to me. After that, I checked the oil a few weeks later and NOTHING showing on the dipstick. Nearly 3 quarts to fill it back up. From then until now, it uses about a quart every 800 miles. There are NO LEAKS on it. I do not have the burnt oil smell. I have replaced the PCV valve twice... first with a high grade aftermarket and then with a Kia PCV. I had to add a quart again yesterday. This ALL started with the recall. Before that, there was minimal consumption. The vehicle has nearly 120,000 now. We love the vehicle, but this has to stop or I will have to get something else. @ over $4.50 a quart this is way too expensive.
You're not alone. Here's the long running thread on this.
https://www.kia-forums.com/2011-2013...ive-oil-4.html
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post #10 of 11 (permalink) Old 06-14-2019, 04:12 PM
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Similar. I have a 2012 Sorento 4cyl GDI. Last December had an oil change done at the dealer. They used a bulk 5w-20 semi-syn. Previously it pretty much read at the full line on the dip, very infrequently had to top off. Noticed within a thousand miles, the dip read towards the lower mark. Topped it off. Another thousand, i had to repeat the top off. Previously I had used Penz Platinum full syn. After about 5k miles, I dumped the oil and used Penn Platinum syn in high-mileage. This seemed to reduce the consumption, but it still consumes. I'm not in love with the vehicle and it's paid off, and convenient because of the hatch. At some point this year, it'll become a secondary vehicle and I'll replace it with a sedan. Overall aside from the engine recall(s), it's been near flawless but doubt that I'll get another Kia/Hyundai product. I was keen on the Stinger but that view through the rear mirror really didn't do it for me.

I'm going to replace the PCV valve and see if it alters the consumption. I'll have to check back in a month or so.

Last edited by ediamiam; 06-14-2019 at 04:14 PM. Reason: add comment
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