24MPH Average : Normal Or Severe Duty OCI ?

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Just curious : If during a oil change interval I average 24 MPH in suburban driving outside a large city (ATL) in my 2017 Sonata 2.4L GDI non - turbo - then would this be considered a normal OR severe OCI (for Hyundai is 3,750 (severe) and 7,500 (normal) ?
 
Originally Posted by ChrisD46
Just curious : If during a oil change interval I average 24 MPH in suburban driving outside a large city (ATL) in my 2017 Sonata 2.4L GDI non - turbo - then would this be considered a normal OR severe OCI (for Hyundai is 3,750 (severe) and 7,500 (normal) ?


Amsoil will only warrant their 25,000 mile oils if it's all done in under 700 hours...35.7MPH average.
THey define "Severe" as 15,000 miles, or 700h...21.4MPH

At an average of 40+mph, my Colorado will extend the nominal 15,000km to 16,000 (10k miles), but short trip like the dealer did before I bought it would have been 6,000km (4k miles).


So, I'm thinking that your use is probably "severe(ish)"...
 
Originally Posted by ChrisD46
Just curious : If during a oil change interval I average 24 MPH in suburban driving outside a large city (ATL) in my 2017 Sonata 2.4L GDI non - turbo - then would this be considered a normal OR severe OCI (for Hyundai is 3,750 (severe) and 7,500 (normal) ?


What oil and Filter are you using? How many miles do you put on the car daily? I think you are probably ok for somewhere around 5000 miles, unless you aren't using quality Oil and filter.

No opportunity to get it up to 55-65 MPH once a week? I probably wouldn't run the oil for 7500 Miles without a used oil analysis.

I do a lot of in town driving but at least once a week or at least every second week I get out on the Highway for a good run. I usually change my oil around 6000-7000 Miles and was using full synthetic with a Fram Ultra.
 
low mph is not a good thing IMO. I blindly interpret that as short trips, stop and go, not running long and hard enough to burn off combustion byproducts. That being said I'd just do 5000 miles with a good proper spec synthetic and call it a day. For modern oils 3750 seems premature under any street conditions.
 
it's not the average speed....it's how long you run it each cold start. Think about New York city taxis....very low speed on average, but once they start, they would run all day. I have heard they go 400k easily. I am not sure where the notion came that idling is bad for a motor.......it's not.
 
People use the term "severe" too casually.

Driving along surface streets consistently at 25-55 mph might yield 24 mph average. Ive noticed it doesn't take a lot of stopped/idling for the average to start tanking.

Driving 65+ mph then sitting in traffic is another beast and could also yield the same mph average.

Driving highway is good because of sustained loading. It doesn't take a lot of power to propel down the highway (60hp at 60mph is a rule of thumb I remember). So it's not high loading, but sustained.

Severe can be achieved because of higher temperatures, because of lower temperatures (cold starts more often), higher sustained loads, etc.

"Severe" likes to get through out there, and the marketing people eat it up and use it to the max because they can sell you more product and service. For whatever reason it makes people feel good to classify their use as severe.

But since there are many ways to skin a cat, we do need to be cognizant of the pathways to get to a single number of average speed.
 
I would consider it severe. I would do a baseline UOA, drop to a 5k oil change and check it again and go from there. This is all with a high quality synthetic obviously.
 
It does not matter what I think, but Hyundai. They provide the warranty. I am severe service by their definition so OCI's are 3,750 miles on my 2017 Elantra. It is listed in the owner's manual.
 
Originally Posted by JHZR2
People use the term "severe" too casually.

Driving along surface streets consistently at 25-55 mph might yield 24 mph average. Ive noticed it doesn't take a lot of stopped/idling for the average to start tanking.

Driving 65+ mph then sitting in traffic is another beast and could also yield the same mph average.

Driving highway is good because of sustained loading. It doesn't take a lot of power to propel down the highway (60hp at 60mph is a rule of thumb I remember). So it's not high loading, but sustained.

Severe can be achieved because of higher temperatures, because of lower temperatures (cold starts more often), higher sustained loads, etc.

"Severe" likes to get through out there, and the marketing people eat it up and use it to the max because they can sell you more product and service. For whatever reason it makes people feel good to classify their use as severe.

But since there are many ways to skin a cat, we do need to be cognizant of the pathways to get to a single number of average speed.





This is spot on advice.
 
Originally Posted by JohnnyJohnson
24 MPH average isn't enough info. For how far and the time of your drive each day matters also.


This is correct.

Nearly constant 24MPH would be very light usage.

Constant 0 to 58 to 0 (repeat) would be severe usage.
 
Given Hyundai's recent history with GDI engines, I would change at 3750 with genuine Hyundai/Kia filters, likely with a quality synthetic that does well in GDI applications (like 5W30 Castrol Magnatec), and regular applications of holy water, blessings, witch doctor dances, and rabbit's feet hanging from the rear view mirror...
 
Originally Posted by ChrisD46
Just curious : If during a oil change interval I average 24 MPH in suburban driving outside a large city (ATL) in my 2017 Sonata 2.4L GDI non - turbo - then would this be considered a normal OR severe OCI (for Hyundai is 3,750 (severe) and 7,500 (normal) ?

Change your Direct Inject engine oil ever 5K and basic synthetic like Supertech, NAPA..... etc.... is plenty-good-enough for that short of an OCI.
I'll be using 5W30 in my 2019 Santa Fe with the 2.4.

My 2019 doesn't have a turbo and you mentioned non-turbo in your 2017 model. I wonder what year Hyundai removed the turbo from the 2.4?
 
I ran 6000 oci on Maxlife and will drop the Valvoline conventional at 5k. Will run a 6500 group 3 change cycle then settle on 5k when odometer evens out at a 5k increment. Think any sn+ can do 5k. I do well over 20k a year. Think 7500 is a bit much unless you're running a real premium oil and 3750 a bit short. If it had a turbo I would run 5k and group III minimum.

If I could change my own oil I'd be buying ST or other cheap syn and changing my non turbo at 6k.
 
Last edited:
Originally Posted by dave1251
A 5K max OCI is what I advise it is likely over kill but you will be able to sleep well at night.

+1
 
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