2014 EX V6 Oil Change Interval and Blackstone results - Kia Forum

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post #1 of 13 (permalink) Old 05-10-2019, 09:27 AM Thread Starter
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Red face 2014 EX V6 Oil Change Interval and Blackstone results

Just thought I'd share my Blackstone oil analysis results that I've accumulated after 2 reports since I purchased the car 2 years ago at 45,000 miles and am now at ~65,000 miles.

When I bought the car I was doing oil changes every 3,000 miles. I submitted a test sample to Blackstone and it was concluded that I could try stretching my OCI to 5,000 miles.

After doing a 5,000 OCI (about 5 months of driving for me), I sent in another sample and I've been okay to go to a 7,000 OCI based on the test results.

For me, this equates to maybe doing one oil change per year

I primarily do around town driving with 3-4 longer highway trips per month.

I bought a dozen filters at a bulk cost and the oil costs me about $30 at Wal-Mart depending on the sale.

As a result of doing this testing, I cut the amount of time, cost and waste down. Granted, the tests were about the cost of a full oil change, but with the results, I can be confident of my engine and oil condition. I probably won't need to check this again for another 2 years or so barring any other issues.

Theoretically, if I switched to Amsoil products that do have a higher TBN, I might be able to get an even longer OCI. However, Amsoil is considerably more expensive than the Pennzoil Platinum Synthetic. I haven't done a theoretical cost analysis, but at this rate, it might not be worth the trouble.

Anyhow, I think the Blackstone testing is worthwhile so as to check the condition of your engine, trans, and other lubricated assemblies. This also allows you to confidently asses and maximize the value of the lubricants.

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File Type: pdf 14 SORENTO EX-190414.pdf (184.3 KB, 23 views)

- Dan G. -
2014 Sorento EX V6
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post #2 of 13 (permalink) Old 05-10-2019, 09:54 AM
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Thanks for the info! Were the initial tests with conventional or Synth? My current OCI is 4000 miles with conventional.
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post #3 of 13 (permalink) Old 05-10-2019, 09:58 AM Thread Starter
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I've been using the Pennzoil Platinum Synthetic in the car since I bought it and is what was tested in both instances.

This oil was highly recommended on the Bobistheoilguy forum due to its low cost and good additive package.

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post #4 of 13 (permalink) Old 05-10-2019, 10:01 AM
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The oil brand and grade does make a difference as you noted. Be clarify what oil was tested.

I notice that Pennzoil has a new Platinum Synthetic on the shelves. I currently using the Ultra Platinum formulation which they deem as their best. There maybe a new version of that to follow as well. The dash OCI for the change is 6000km much less than you're doing. I may extend it later but as the interval must be adhered to for warranty it can wait.

Edit
If I am reading it correctly the right column is the earlier test which is quite different to this especially as you say you've used the same oil. Maybe some of it is a result of what was used before and flushing out....but interesting.

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Last edited by Tripplec; 05-10-2019 at 10:07 AM. Reason: Added a paragraph
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post #5 of 13 (permalink) Old 05-10-2019, 10:03 AM Thread Starter
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I personally wouldn't recommend extending your OCI without establishing a baseline with an initial analysis.

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post #6 of 13 (permalink) Old 05-10-2019, 10:36 AM
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You can definitely get a longer OCI with Amsoil or Mobil 1, but unless you really hate doing a yearly oil change, might as well stick with Penzoil. That's definitely the least expensive quality synthetic I've seen on the regular. Sometimes different places will have sales on other brands like Castrol (which is what I was using when I sent my sample to Blackstone), and the TBN numbers were pretty much the same as shown on your report.. maybe a little higher. I think I posted mine on the forum here a while back, but I don't have a link right now.
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post #7 of 13 (permalink) Old 05-10-2019, 02:27 PM
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I wouldn't get too carried away with pushing the OCI. Oil changes are the cheapest maintenance you can do and not doing it results conversely in the biggest expense repairing an engine. It maybe ok with Synthetic going more the 6 months but most owners manuals do say xxx miles/Km or 6 months which ever comes first. Additives degrade and if yours is also GDI as I mention in my Signature. There is more heat etc going on and over tightening a bolt to where its strips, turning it back a half turn or so doesn't fix the fault.
I am guy who did oil changes on a variety of vehicle for over a decade or two changing oil at 3000 or 4000km Max (depended on the vehicle, I had at least 2 in the driveway plus my son's)
I went through a truck load of oil and filters. (4-5 oil changes every year on each one). I never lost an engine and sold every vehicle still running A ok with 200k or more on them.

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post #8 of 13 (permalink) Old 05-10-2019, 02:52 PM Thread Starter
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Red face

No one here is saying or implying to NOT do oil changes.

Adjusting the OCI based on oil analysis is the most confident method to assure you're utilizing the oil to its best effect and monitoring the actual metallurgical condition of the engine or other mechanical assemblies (transmission, differential, gearbox, etc.).

My oil analysis includes assessing the condition of the additives (TBN) package.

My warranty is long since over. Yes, my Sorento is a V6 GDI.

I'd just rather not spend more of my precious time or money than I have to wrench on my car when it's empirically not necessary as frequently as some believe. And, in my case not having to recycle an additional 36 quarts of seemingly used-up oil per year is an environmental bonus too.

I've been changing car oil/lubes for over 20 years both personally and as a pro-mechanic and knowing what I know now, I definitely threw away a lot of perfectly fine "used" oil.

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post #9 of 13 (permalink) Old 05-10-2019, 04:15 PM
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Ahhh and your engine was happy with the early changes!! As are mine.

All individual preferences either way. OEM specify the interval base on their engineers calculations. However its done.

So the way I look at the engineers recommendation is how severe was my driving environment and when did they say I should change it. I pick a number I can sleep with and then drive day after day etc.

PS A year of time hear forces extreme cold to very hot ambient temperature over those miles/km. Neither is good for the engine or oil. There are limits and paying for lab tests adds to the OCI cost.

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post #10 of 13 (permalink) Old 05-11-2019, 10:19 PM
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I normally go around 10k miles before I change my oil. I only use Royal Purple 5w-30. Sometimes I do hit 12k but that's because it's winter time and it's too cold to change it until I hit 12k. I wouldn't recommend going past 12k unless you are constantly checking your oil.
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