SX Oil consumption - Kia Forum

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post #1 of 56 (permalink) Old 02-09-2019, 09:23 AM Thread Starter
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SX Oil consumption

My 2017 has a little over 35,000 miles on it, and I'm about due for another oil change.
I've gone just over 6,000 on the current oil.
Maybe its nothing, but I have had to add about 1/2 a quart of oil twice during this 6000 mile run.
I don't know if the winter cold season has anything to do with it.
Can't say I never added a little oil between changes before, but never this much.

Do you think I should be concerned ? Do any of you find you have to add some oil between changes ?


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post #2 of 56 (permalink) Old 02-09-2019, 10:17 AM
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mine uses no oil between changes at the same interval as you. Before panicking , what exact brand and weight of oil have you been using? regular or synthetic?
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post #3 of 56 (permalink) Old 02-09-2019, 02:23 PM
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IMHO, you should be using 0w-30, 5w-30 or 0w-40 oil in that engine and change it every 4K miles at the most.
Oil consumption is not normal, also check PCV.
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post #4 of 56 (permalink) Old 02-09-2019, 04:56 PM
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Using synthetic now but at first on whatever oil the dealer was using and up to the current time, no oil consumption that can be measured on the stick. 23,000 mi. I change at 4000 to 5000 depending on how it looks. Its a little dark this time so I'll go 4000 which will probably be in March or April. Always have used 5W-30.
I don't think there's been a time I left the driveway in the car that I didn't stomp it at some point in the trip (after full operating temp) so I really don't baby it.
I use Mid-Grade gas (89/90) with Startron stabilizer/cleaner with every fill.
1 quart of oil in 6000 miles will not raise a red flag with the dealer. In the old days they wouldn't do anything under warranty unless it was using more than 1 qt/1000 mi. With me, it would be a big deal. I have not owned a vehicle since the '70s that used oil and had to have some added between changes. This corresponds with the moment I realized that my insistence on using 20W-50 racing oil in a regular car was destroying my engines. After that I have never wavered from the recommended viscosity/type.

If you have been using a heavier oil it might not be too late to go back to 5W-30.

Otherwise, there is the possibility of a leak. Do you have any oiliness anywhere around the engine? Any oil spots where it sits? I have heard of the oil lines to the turbo coming loose and leaking. Check out the oil filter area and see if its been leaking. Look at the drain plug area.

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post #5 of 56 (permalink) Old 02-09-2019, 06:19 PM
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Quote:
Originally Posted by 1saxman View Post
This corresponds with the moment I realized that my insistence on using 20W-50 racing oil in a regular car was destroying my engines. After that I have never wavered from the recommended viscosity/type.

If you have been using a heavier oil it might not be too late to go back to 5W-30.
I would add one caveat to what you said here. There is usually a chart of allowable oil weights based on what the engine needs, and what temperature range you will be operating it in.

5W-30 is not the end all oil weight. If you never run the car in freezing temperatures, one could make the case that 10W-30 will be just fine in this application. 10W-30 has a proven track record of not shearing it's viscosity grade down as much as 5W-30 during the 5,000 or 6,000 mile drain interval. This usually applies to the folks using regular conventional oil, synthetics will have different profiles.
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post #6 of 56 (permalink) Old 02-09-2019, 06:48 PM
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That's true enough as far as it goes, but you don't play with the upper number which is where the trouble lies. As for me, I stick with the recommendation. It has worked perfectly for me in a number of vehicles since I wised up. The more you learn about the smaller, more powerful, dual overhead cam, multi-valve engines the more you encounter the advice to not exceed the maximum viscosity recommendation. I was reading an article in the Ford magazine twenty years ago about failures in these tight-tolerance engines from owners using a heavier oil than specified. I guess people just cannot shake the idea that a heavier oil has to be better.

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post #7 of 56 (permalink) Old 02-09-2019, 07:10 PM Thread Starter
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Originally Posted by pcguy View Post
mine uses no oil between changes at the same interval as you. Before panicking , what exact brand and weight of oil have you been using? regular or synthetic?
Using synthetic Pennzoil 5w-30 Platinum

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post #8 of 56 (permalink) Old 02-09-2019, 07:16 PM Thread Starter
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Otherwise, there is the possibility of a leak. Do you have any oiliness anywhere around the engine? Any oil spots where it sits? I have heard of the oil lines to the turbo coming loose and leaking. Check out the oil filter area and see if its been leaking. Look at the drain plug area.[/QUOTE]

I saw no leaks anywhere, all around under the hood from the top, saw no leak underneath by the engine pan cover or when looking through the oil filter cover and oil drain cover openings.

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post #9 of 56 (permalink) Old 02-09-2019, 08:18 PM
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I would keep an eye on the consumption, adding as needed to keep it topped off. Unfortunately, the amount of usage you are observing is not deemed abnormal, but does warrant keeping a close eye on the levels. Also, watch for situations where you may observe any smoke emitting from the tailpipe. That can clue you in on what the problem may be. ie: smoke at startup is a classic valve stem seal issue.
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post #10 of 56 (permalink) Old 02-10-2019, 10:25 AM Thread Starter
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Originally Posted by dubber09 View Post
IMHO, you should be using 0w-30, 5w-30 or 0w-40 oil in that engine and change it every 4K miles at the most.
Oil consumption is not normal, also check PCV.
Is the PCV valve easy to see, find, access ?

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