QSUD 5w20, 7051 miles, '11 Accent

[tarbasd]

Oil was used for 10 months, normal driving conditions (typically 30 mile round trip daily, mostly urban interstate, light traffic). Leftover of about 1/2 qt of QSGB was used. Oil filter was OEM.

Code:


OIL QSUD5w20Universal

Averages

MI on Oil 7051

MI on Unit 21053

Sample Date 2/16/2013

Make Up Oil Added



ALUMINUM 6 6

CHROMIUM 2 0

IRON 34 14

COPPER 98 19

LEAD 1 2

TIN 2 1

MOLYBDENUM 79 105

NICKEL 1 0

MANGANESE 17 2

SILVER 0 0

TITANIUM 0 0

POTASSIUM 2 2

BORON 15 44

SILICON 40 21

SODIUM 10 133

CALCIUM 2378 1880

MAGNESIUM 20 112

PHOSPHORUS 751 667

ZINC 930 759

BARIUM 0 1

Values

Should Be

SUS Viscosity @ 210 F 55.2 46-59

cSt Viscosity @ 100 C 8.83 6.0-10.2

Flashpoint in F 385 >355

Fuel %
Antifreeze % 0 0

Water % 0
Insolubles % 0.3
TBN 1.4 >1.0

TAN

ISO Code


Blackstone comments:

We're thinking this is probably just the third oil change for your Accent, in which case the extra iron, copper, and silicon are of little concern. They're probably residual from the wear-in period, which tends to leave metal and silicon (from wear-in sealers) in the oil. If that is, indeed, the case, improvements should abound next time. Averages are based on 3,000 miles on the oil, so considering your longer runs, you may never get average wear, but numbers should eventually level out. The TBN is still okay at 1.4 (1.0 is too low). Check back for improvements.

My thoughts:

It is actually my 5th oil change, because first I followed severe interval (my driving pattern changed). So I think it is less likely that these are wear-in metals. However, considering the fact that my OCI was more than double of that of the universal averages, Iron and Silicon is not that bad. Assuming that these should be proportional to OCI. But Copper is still way too high. Also, TBN 1.4 shows that the oil was done. I will keep using QSUD, but I may start doing slightly shorter OCIs, especially if oil age reaches 9-10 months. Required maintenance for normal driving is 7,500 miles or 1 year. I have some doubts that conventional oil can do that.

 

[dave1251]

Originally Posted By: tarbasd
Oil was used for 10 months, normal driving conditions (typically 30 mile round trip daily, mostly urban interstate, light traffic). Leftover of about 1/2 qt of QSGB was used. Oil filter was OEM.

Code:


OIL QSUD5w20Universal

Averages

MI on Oil 7051

MI on Unit 21053

Sample Date 2/16/2013

Make Up Oil Added



ALUMINUM 6 6

CHROMIUM 2 0

IRON 34 14

COPPER 98 19

LEAD 1 2

TIN 2 1

MOLYBDENUM 79 105

NICKEL 1 0

MANGANESE 17 2

SILVER 0 0

TITANIUM 0 0

POTASSIUM 2 2

BORON 15 44

SILICON 40 21

SODIUM 10 133

CALCIUM 2378 1880

MAGNESIUM 20 112

PHOSPHORUS 751 667

ZINC 930 759

BARIUM 0 1

Values

Should Be

SUS Viscosity @ 210 F 55.2 46-59

cSt Viscosity @ 100 C 8.83 6.0-10.2

Flashpoint in F 385 >355

Fuel %
Antifreeze % 0 0

Water % 0
Insolubles % 0.3
TBN 1.4 >1.0

TAN

ISO Code


Blackstone comments:

We're thinking this is probably just the third oil change for your Accent, in which case the extra iron, copper, and silicon are of little concern. They're probably residual from the wear-in period, which tends to leave metal and silicon (from wear-in sealers) in the oil. If that is, indeed, the case, improvements should abound next time. Averages are based on 3,000 miles on the oil, so considering your longer runs, you may never get average wear, but numbers should eventually level out. The TBN is still okay at 1.4 (1.0 is too low). Check back for improvements.

My thoughts:

It is actually my 5th oil change, because first I followed severe interval (my driving pattern changed). So I think it is less likely that these are wear-in metals. However, considering the fact that my OCI was more than double of that of the universal averages, Iron and Silicon is not that bad. Assuming that these should be proportional to OCI. But Copper is still way too high. Also, TBN 1.4 shows that the oil was done. I will keep using QSUD, but I may start doing slightly shorter OCIs, especially if oil age reaches 9-10 months. Required maintenance for normal driving is 7,500 miles or 1 year. I have some doubts that conventional oil can do that.


My thoughts are you should check your air filtration system TBN of 1.4 is not done but there is enough debris to warrant a oil change.

 

[Bill in Utah]

I think the requirements are 7500 miles or 6 months for NORMAL service. 3750 or 4 months for severe service.

Since you have a major warranty I would make sure you are following everything to the letter.

Is this engine DI'd?

I would not be happy with this UOA. I agree it is not break in leftover. Just me.

Bill

 

[tarbasd]

Originally Posted By: Bill in Utah
I think the requirements are 7500 miles or 6 months for NORMAL service. 3750 or 4 months for severe service.


I'm holding the Owner's Manual in my hands: 7,500 miles or 12 months for normal service, 3,750 miles or 6 months for severe service.

Quote:

Is this engine DI'd?


No, it's still MFI. The last year of its generation.

I'm almost positive that air filtration is fine. I have changed the air filter on schedule with OEM Hyundai filter, and I'm very careful. Strangely, I had high Silicon in my other car, too. Somebody is probably pouring sand into my engines.

 

[chubbs1]

This is a pretty "severe" level of wear metals esp. Cu for an engine like this. I would cut back to a severe schedule regimen as stated in your manual and keep good records. It is not the oil that is a worry IMO but if you want to make a switch to PU or M1 for kicks it won't hurt anything.

 

[Billy_D]

you might need to follow the severe service, and keep a record in case you need to take the car to the dealership. I wouldn't be happy with your UOA.

 

[MinamiKotaro]

Copper is 13.8/1000mi, much too high. Does this car have an oil cooler? Iron is 4.8/1000mi, pretty high, too. Like others have already said, keep track of everything. I would try oil from a different manufacturer altogether next time just to see what happens.

Silicon seems high, as well. Try a different brand of air filter when it's time to change it, too.

 

[tarbasd]

Thanks all. Yeah, I'm keeping record anyway. Though I still think it's unlikely that the car will die from lubrication related problem.

I don't think I will change either brand of oil of air filter. QS is actually recommended by Hyundai (I know it doesn't mean much, but at least I think they wouldn't recommend an oil that's a bad match for the engine). Air filter is also OEM, and I don't think I need anything better/more special.

I'm quite convinced that all that happened is that the oil was used too long. TBN is only a guessing game without TAN, and some labs, like Polaris would mark this critically low. Oxidation also explains high copper due to corrosion. Maybe I drove the car a bit too hard, maybe the fact that I almost always start it up twice in the morning (park it outside the garage, wait for the kids to get ready, start it again), so yeah, I probably should do severe OCIs or close to that. I'll see how my driving pattern goes for the next interval. I plan a longer road trip this time, so maybe 7000 will be fine.