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Castrol GTX Ultraclean 5w-30 - 5,000 miles - 2016 GS F #4998194
02/01/19 10:28 AM
02/01/19 10:28 AM
Joined: Oct 2016
Posts: 37
Florida
Tiir Offline OP
Tiir  Offline OP

Joined: Oct 2016
Posts: 37
Florida
Got rid of my other 2 cars, and picked up a CPO 2016 Lexus GS F., of course I had to do a oil sample on it.

The cars had Castrol GTX/Ultraclean 5w-30 it's whole life (don't recall when they switched the formula/packaging from regular GTX to the Ultraclean moniker) along with the OEM oil filter. It now has PUP 5w-30 in it now; will most likely do a UOA on that too.

This sample saw 6-7 runs at the dragstrip; in addition to seeing the upper RPM range on a daily basis.

GSF.jpg

2017 WRX STI - Sold
2017 ES300h - Sold

2016 Lexus GS F
Re: Castrol GTX Ultraclean 5w-30 - 5,000 miles - 2016 GS F [Re: Tiir] #4998202
02/01/19 10:34 AM
02/01/19 10:34 AM
Joined: Sep 2005
Posts: 14,412
Canada
addyguy Offline
addyguy  Offline

Joined: Sep 2005
Posts: 14,412
Canada
Looks great, Castrol does a good job!

Surprised at how much TBN is left....looks like it could go 10k if someone wanted.


2010 Kia Soul 2U - 2.0L I-4, auto; 139k miles.
M1 EP 10W-30; OEM Kia filter.
Re: Castrol GTX Ultraclean 5w-30 - 5,000 miles - 2016 GS F [Re: Tiir] #4998205
02/01/19 10:36 AM
02/01/19 10:36 AM
Joined: Apr 2012
Posts: 317
Michigan
researcher Offline
researcher  Offline

Joined: Apr 2012
Posts: 317
Michigan
Interesting.. if you look at the viscosity, it did the same thing my 5w30 Magnatec did.. thin out to about 9.1, the lower end of the range Blackstone shows. But flashpoint didn't decrease like it did on mine.. I probably have my answer (short trips) just made me think.. hmmm...

Other than that, looks like a really good report! It's like as long as you do regular maintenance on a Toyota/Lexus/Scion they give great UOA's! Doesn't seem to matter what oil, as long as it's maintained..

Re: Castrol GTX Ultraclean 5w-30 - 5,000 miles - 2016 GS F [Re: Tiir] #4998207
02/01/19 10:37 AM
02/01/19 10:37 AM
Joined: Dec 2004
Posts: 10,046
1/2 hr N.E. of Detroit
Triple_Se7en Offline
Triple_Se7en  Offline

Joined: Dec 2004
Posts: 10,046
1/2 hr N.E. of Detroit
After 5K miles, it still had 6.6 TBN?
Something's amiss here!


2019 Hyundai SantaFe 2.4 factory fill / QS 5w20 conv. / Mahle OEM oil filter
04 Chev Colorado 3.5 QS / Valv syn 5w30 blend K&N filter
03 Chev Malibu 3.1 QS / Valv Syn 5w30 blend Fram EG filter
Re: Castrol GTX Ultraclean 5w-30 - 5,000 miles - 2016 GS F [Re: Tiir] #4998374
02/01/19 12:46 PM
02/01/19 12:46 PM
Joined: May 2012
Posts: 2,278
The land of USA-made Subies!
SubieRubyRoo Offline
SubieRubyRoo  Offline

Joined: May 2012
Posts: 2,278
The land of USA-made Subies!
Nice report.

Triple, I tested the PP Euro 0W40 in my Odyssey last summer. At 7,650 miles, the oil still had a TBN of 6.0. If there is not a lot of fuel dilution or oil contamination, there is less to cause the TBN to be depleted. Odysseys are known to be hard on oil with the iVTEC, so we know PP Euro 0W40 is pretty dang stout!

[Linked Image]

Re: Castrol GTX Ultraclean 5w-30 - 5,000 miles - 2016 GS F [Re: Tiir] #4998389
02/01/19 12:54 PM
02/01/19 12:54 PM
Joined: Apr 2012
Posts: 10,255
Kendall, FL
wemay Offline
wemay  Offline

Joined: Apr 2012
Posts: 10,255
Kendall, FL
This looks like the SN Plus formulation. Also now labelled a Synthetic Blend on their website. Thanks for sharing, great report.


18 KIA Sportage 2.4 AWD
Now: VAL Syn 5w20 / OEM 26300-35504
Next: NAPA Semi-Syn 5w20 / same

13 Hyundai Santa Fe Sport 2.0T
Now: PP 5w30 / WIX 51334
Next: QSUD 5w30 / Same
Re: Castrol GTX Ultraclean 5w-30 - 5,000 miles - 2016 GS F [Re: Tiir] #4998564
02/01/19 02:42 PM
02/01/19 02:42 PM
Joined: Oct 2016
Posts: 37
Florida
Tiir Offline OP
Tiir  Offline OP

Joined: Oct 2016
Posts: 37
Florida
I have to say, I am pretty happy with the results ; although I know you can't compare these vehicles at any level - it was nice to see comparing to my WRX STI UOA's that just hammered the oil put in it.

When I saw the TBN @ 6.6, I too was surprised, but not impossible from what I've been able to gather though; some bits of information I did forgot to mention that might explain why:

It's driven 60 miles round trip of which 90% is highway.

It has a 9.3 qt oil sump capacity - that's allot of additive capacity to deplete.



Also for those of you who don't know - this is a port / direct injected engine.


2017 WRX STI - Sold
2017 ES300h - Sold

2016 Lexus GS F
Re: Castrol GTX Ultraclean 5w-30 - 5,000 miles - 2016 GS F [Re: Tiir] #4998686
02/01/19 04:54 PM
02/01/19 04:54 PM
Joined: Dec 2017
Posts: 495
Suomi
Bjornviken Offline
Bjornviken  Offline

Joined: Dec 2017
Posts: 495
Suomi
Looks really good!๐Ÿ‘๐Ÿ‘

Re: Castrol GTX Ultraclean 5w-30 - 5,000 miles - 2016 GS F [Re: Tiir] #4998782
02/01/19 06:12 PM
02/01/19 06:12 PM
Joined: Mar 2017
Posts: 7,563
...
PimTac Offline
PimTac  Offline

Joined: Mar 2017
Posts: 7,563
...
I would stick with the Castrol. That engine does well with it.


Cannot see signatures any longer so it doesnโ€™t matter.
Re: Castrol GTX Ultraclean 5w-30 - 5,000 miles - 2016 GS F [Re: Tiir] #4998789
02/01/19 06:20 PM
02/01/19 06:20 PM
Joined: Jan 2018
Posts: 176
Central Texas
Brian553 Offline
Brian553  Offline

Joined: Jan 2018
Posts: 176
Central Texas
Originally Posted by Tiir
I have to say, I am pretty happy with the results ; although I know you can't compare these vehicles at any level - it was nice to see comparing to my WRX STI UOA's that just hammered the oil put in it.

When I saw the TBN @ 6.6, I too was surprised, but not impossible from what I've been able to gather though; some bits of information I did forgot to mention that might explain why:

It's driven 60 miles round trip of which 90% is highway.

It has a 9.3 qt oil sump capacity - that's allot of additive capacity to deplete.



Also for those of you who don't know - this is a port / direct injected engine.




This makes a little more sense now.

Re: Castrol GTX Ultraclean 5w-30 - 5,000 miles - 2016 GS F [Re: Triple_Se7en] #4998987
02/01/19 10:29 PM
02/01/19 10:29 PM
Joined: Jul 2005
Posts: 10,528
Maricopa, Arizona
dave1251 Offline
dave1251  Offline

Joined: Jul 2005
Posts: 10,528
Maricopa, Arizona
Originally Posted by Triple_Se7en
After 5K miles, it still had 6.6 TBN?
Something's amiss here!



No.


make the inside of your engine oil cap white.
don't use.
Re: Castrol GTX Ultraclean 5w-30 - 5,000 miles - 2016 GS F [Re: Tiir] #4999053
02/02/19 12:39 AM
02/02/19 12:39 AM
Joined: Mar 2017
Posts: 143
Bellevue, WA
SlavaB Offline
SlavaB  Offline

Joined: Mar 2017
Posts: 143
Bellevue, WA
Thx for the report!

Last edited by SlavaB; 02/02/19 12:40 AM.

17 Kia Sportage EX 2.4L FWD / Mobil1 EP 5w30 + M1-104A
15 MB GLA250 4Matic / Motul 8100 X-Cess 5w40 + Hengst E818H D238
Re: Castrol GTX Ultraclean 5w-30 - 5,000 miles - 2016 GS F [Re: Tiir] #4999959
02/02/19 11:58 PM
02/02/19 11:58 PM
Joined: Jul 2005
Posts: 10,528
Maricopa, Arizona
dave1251 Offline
dave1251  Offline

Joined: Jul 2005
Posts: 10,528
Maricopa, Arizona
Follow the max OCI interval the GTX can handle it at ease in this application. Someone posted on here Castrol can not formulate an motor oil properly.


make the inside of your engine oil cap white.
don't use.
Re: Castrol GTX Ultraclean 5w-30 - 5,000 miles - 2016 GS F [Re: dave1251] #5000035
02/03/19 06:48 AM
02/03/19 06:48 AM
Joined: Dec 2005
Posts: 10,712
Upper Midwest
kschachn Offline
kschachn  Offline

Joined: Dec 2005
Posts: 10,712
Upper Midwest
Originally Posted by dave1251
Follow the max OCI interval the GTX can handle it at ease in this application. Someone posted on here Castrol can not formulate an motor oil properly.

Yes it was someone who has a history of posting other idiotic comments as well.


1994 BMW 530i, 241K
1996 Honda Accord, 267K
1999 Toyota Sienna, 409K
2000 Toyota ECHO, 280K
Re: Castrol GTX Ultraclean 5w-30 - 5,000 miles - 2016 GS F [Re: kschachn] #5003557
02/06/19 10:20 PM
02/06/19 10:20 PM
Joined: Mar 2015
Posts: 5,779
Virginia
bbhero Online sick
bbhero  Online Sick

Joined: Mar 2015
Posts: 5,779
Virginia
LOL


Well stated..


Nissan Altima 3.5 Coupe
Mobil Super 5w30 Wix 57356
"Treat your family like your friends and treat your friends like your family."
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