Reformulated QSUD 5w30

[silverbullet]

Regarding QSUD 5w30 VOA, I've always refer to the PQIA March 2013 test results. However, I noticed that PQIA had tested a newer QSUD (date purchased 12/28/2015).

Compared with PQIA's last test of QSUD (date purchased 1/25/2013) the main differences seems to more moly in the newer formulation (252ppm vs. 58ppm), slightly less calcium (2268ppm vs. 2411ppm) and slightly more phosphorus (751ppm vs. 687ppm). All other results seem similar to each other.

Thoughts?

 

[69GTX]

Previous QSUD thread with UOA at 10K miles

That's a recent thread above. A 2015 UOA shows fairly depleted Calcium, Phos, Zinc. I'm not sure what to think of the variation in the VOA's and the UOA's.

 

[ChrisD46]

I'm not sure what to think of current QSUD either ? Since I have a GDI engine I won't run past a 5K OCI so current QSUD would probably be ok - but for $3.00 more a jug I can get PPPP !

 

[SatinSilver]

I would think Castrol Magnatec 5w30 would be up to the task for 5k miles. The UOAs have been excellent. A jug runs $19.84 or so at WM.

 

[CT8]

Dexos 1 gen 2 reformulation?

 

[wemay]

Originally Posted By: ChrisD46
I'm not sure what to think of current QSUD either ? Since I have a GDI engine I won't run past a 5K OCI so current QSUD would probably be ok - but for $3.00 more a jug I can get PPPP !


Hyundai has an agreement, not just emblems under the hood, which stipulates it's dealerships will be supplied with QState as dealership fill in the U.S. and Shell Hellix in other countries. As we all know, Hyundai is also a major player in the T-GDi and GDi world so LSPI, Calcium, Moly and formulations in general are of some interest here.
High Moly oils, in everything I've read thus far, counteract or nullify the ill effects of Calcium with respect to LSPI. I can see (speculate) this reformulation being a result of those tests. Virtus_Probi has also shared a lot of information on this topic.

 

[JustinH]

Interesting how Hyundai has always recommended quaker state in their literature, but now the formulations are falling in line with LSPI counteraction. I'll buy it for my 3750 runs, I just hate dumping synthetic motor oil at 3750 miles, but I am still encountering a fuel dillusion issue. Perhaps a UOA is in order to confirm my suspicions.

 

[Virtus_Probi]

Originally Posted By: wemay

Hyundai has an agreement, not just emblems under the hood, which stipulates it's dealerships will be supplied with QState as dealership fill in the U.S. and Shell Hellix in other countries. As we all know, Hyundai is also a major player in the T-GDi and GDi world so LSPI, Calcium, Moly and formulations in general are of some interest here.
High Moly oils, in everything I've read thus far, counteract or nullify the ill effects of Calcium with respect to LSPI. I can see (speculate) this reformulation being a result of those tests. Virtus_Probi has also shared a lot of information on this topic.


Yet another good wemay post...strangely enough, Infineum didn't mention the moly link to taming LSPI in a very helpful recent webpage, but Oronite has discussed it and there is some detail in an older paper from Fuels & Lubes Internaional that I found a while ago.

http://fuelsandlubes.com/digital/fli/2013-Q3/files/assets/basic-html/page43.html

Note that the above refers to MoDTC, I have no idea if MoS2 acts to deter LSPI at all.
It's also worth noting that this paper mentions ZDDP (which is also called ZnDTP) as an LSPI quencher, which correlates to Infineum's findings. Of course, ZDDP concentrations were reduced in the last generation of mass market oils, so it will be interesting to see if those levels start rising again in dexos1 Gen 2 and GF6 oils due to LSPI.

 

[wemay]

Originally Posted By: Virtus_Probi
Originally Posted By: wemay

Hyundai has an agreement, not just emblems under the hood, which stipulates it's dealerships will be supplied with QState as dealership fill in the U.S. and Shell Hellix in other countries. As we all know, Hyundai is also a major player in the T-GDi and GDi world so LSPI, Calcium, Moly and formulations in general are of some interest here.
High Moly oils, in everything I've read thus far, counteract or nullify the ill effects of Calcium with respect to LSPI. I can see (speculate) this reformulation being a result of those tests. Virtus_Probi has also shared a lot of information on this topic.


Yet another good wemay post...strangely enough, Infineum didn't mention the moly link to taming LSPI in a very helpful recent webpage, but Oronite has discussed it and there is some detail in an older paper from Fuels & Lubes Internaional that I found a while ago.

http://fuelsandlubes.com/digital/fli/2013-Q3/files/assets/basic-html/page43.html

Note that the above refers to MoDTC, I have no idea if MoS2 acts to deter LSPI at all.
It's also worth noting that this paper mentions ZDDP (which is also called ZnDTP) as an LSPI quencher, which correlates to Infineum's findings. Of course, ZDDP concentrations were reduced in the last generation of mass market oils, so it will be interesting to see if those levels start rising again in dexos1 Gen 2 and GF6 oils due to LSPI.


+1
This will be my main interest when GF-6 guidlines are released and the oils meeting it come to mkt.

 

[ChrisD46]

Since Quaker State is the official US oil choice of Hyundai - hopefully there is some oil research going on between the two companies.

 

[TXCarGeek]

I can't contribute much from a technical standpoint, but my local WM has QSUD priced at $20 for the 5 quart jug. Seriously cheap.

 

[69GTX]

Originally Posted By: TXCarGeek
I can't contribute much from a technical standpoint, but my local WM has QSUD priced at $20 for the 5 quart jug. Seriously cheap.


And seriously cheaper after applying the $7 mfg rebate that runs all year.

 

[TXCarGeek]

Had no idea there was a rebate...Thank you!

 

[Drivefree]

QSUD is high quality, high performance full synthetic oil. Can easily go 8k miles between oil changes. Mobil 1 and Warren/Supertech/Kirkland turned black much sooner. Mobil 1 was dark after 1k miles. I believe QS and Pennzoil share the same formulation and are made by Shell. High TBN and moly numbers.

 

[Gene K]

My guess is they switched to the new "Super Moly" used by M1 and PP.

IE it's three or four times as effective so you don't use nearly as much.

 

[Gene K]

QSUD is high quality, high performance full synthetic oil. Can easily go 8k miles between oil changes. Mobil 1 and Warren/Supertech/Kirkland turned black much sooner. Mobil 1 was dark after 1k miles. I believe QS and Pennzoil share the same formulation and are made by Shell. High TBN and moly numbers.

I've always wondered about this. People will say they think it gets dirty quicker (not sure that's the actual reason but I'll go with it). If that's the case why would an oil that suspends dirt be inferior to an oil that allowed it to precipitate out onto the engine surfaces retaining it's sparkling clarity?

 

[OVERKILL]

QSUD is high quality, high performance full synthetic oil. Can easily go 8k miles between oil changes. Mobil 1 and Warren/Supertech/Kirkland turned black much sooner. Mobil 1 was dark after 1k miles. I believe QS and Pennzoil share the same formulation and are made by Shell. High TBN and moly numbers.

The colour means absolutely nothing.

 

[ChrisD46]

Interesting how Hyundai has always recommended quaker state in their literature, but now the formulations are falling in line with LSPI counteraction. I'll buy it for my 3750 runs, I just hate dumping synthetic motor oil at 3750 miles, but I am still encountering a fuel dillusion issue. Perhaps a UOA is in order to confirm my suspicions.

*I have a UOA here for my 2017 Sonata 2.4L non - turbo GDI engine : I ran it for 3,900 miles of easy suburban driving and the QSUD 5W20 oil was almost spent - and that was with almost 1 qrt. of same QSUD 5W20 make up oil ! This OCI I switched to 5W30 synthetic PUP and am not experiencing the oil consumption as I was with QSUD 5W20 ... I feel if I had used QSUD 5W30 the results would be similar : A better weight oil for the Hyundai 2.4L DI engines ... Still I would only run it to about 4,000 mile OCI's unless I got a UOA to check fuel dilution and if oil additives were spent ?

 

[odie]

Quaker State is mentioned in the HYUNDAI owners manual . Likely implies conventional , blend ( high mileage ) or synthetic .

 

[Gene K]

When the Alabama Hyundai Plant first opened the factory fill was QS Blend.

I'm not sure what was in the Korean cars.