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#4520197 - 09/19/17 11:09 AM Why no love for Castrol GTX Diesel 15w-40???
CastroPenzoHavoMobil1 Offline


Registered: 04/05/05
Posts: 17
Loc: Fort Worth
I found some of this stuff on clearance at my local wally world for $5 a gallon.
However, once I got home to check out the reputation of the product, I noticed there wasn't much said about it here at BITOG.
Why no love for Castrol GTX Diesel 15w-40?


Edited by CastroPenzoHavoMobil1 (09/19/17 11:11 AM)

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#4520198 - 09/19/17 11:14 AM Re: Why no love for Castrol GTX Diesel 15w-40??? [Re: CastroPenzoHavoMobil1]
aquariuscsm Offline


Registered: 12/30/06
Posts: 18178
Loc: Dallas,Tx USA
There was a really good uoa of it here years back on a tracked and raced 3000GT.
_________________________
1996 Nissan 300ZX 5-speed,Arctic Pearl(#175 of 300)
Quaker State Ultimate Durability 10W30
2012 Honda Accord Coupe EX-L 2.4,auto,San Marino Red
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#4520217 - 09/19/17 11:34 AM Re: Why no love for Castrol GTX Diesel 15w-40??? [Re: CastroPenzoHavoMobil1]
Samrsnow Offline


Registered: 02/22/17
Posts: 45
Loc: Lafayette, Louisiana
I impulse bought a jug at Walmart when it was 10 bucks a piece several months ago. Never found a UOA or VOA so I'm leery about using it in my BMW. Currently using some Delo instead. I would really like to use the castrol next oci.
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1987 BMW e28 535is - mystery mileage (300,000+) Valvoline VR1 20W50 and Mann filter.

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#4520228 - 09/19/17 11:45 AM Re: Why no love for Castrol GTX Diesel 15w-40??? [Re: CastroPenzoHavoMobil1]
ArcticDriver Offline


Registered: 01/27/17
Posts: 1139
Loc: USA
I have never seen it on sale.

Is it VAG TDI rated?
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Multiple Diesel and Gasoline vehicles

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#4520243 - 09/19/17 12:02 PM Re: Why no love for Castrol GTX Diesel 15w-40??? [Re: ArcticDriver]
CastroPenzoHavoMobil1 Offline


Registered: 04/05/05
Posts: 17
Loc: Fort Worth
Originally Posted By: ArcticDriver
Is it VAG TDI rated?


I'm not sure, what bottle marking should I be looking for ArcticDriver?
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#4520265 - 09/19/17 12:42 PM Re: Why no love for Castrol GTX Diesel 15w-40??? [Re: CastroPenzoHavoMobil1]
dogememe Offline


Registered: 04/15/17
Posts: 613
Loc: SF BAY AREA, CA
I don't know why O'Reilly sells that stuff CHEAPER than O'Reilly brand 15w-40 sometimes but I wouldn't use it.


Edited by dogememe (09/19/17 12:44 PM)
_________________________
2007 Ford Crown Vic P71 4.6 ~124K Miles, SynPower 5W-30, Royal Purple Filter. *Daily Driver*
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#4520270 - 09/19/17 12:45 PM Re: Why no love for Castrol GTX Diesel 15w-40??? [Re: ArcticDriver]
JohnnyJohnson Offline


Registered: 10/22/09
Posts: 2767
Loc: Wet side WA
Originally Posted By: ArcticDriver
I have never seen it on sale.

Is it VAG TDI rated?


Regular price at my Walmart for Castrol GTX MAGNATEC 5W-30 Full Synthetic Motor Oil, 5 QT $19.88.
I'd use it in a heart beat!
_________________________
2004 Toyota Corolla 121790
Out: QSUD 5W-30 Purolator One 5030
In: Valvoline ML 5w-30 TG4967 117530 2-8-18
2006 Duramax 74047
Out: T6 5W-40 M1-303
In: T6 5W-40 XG9100 73752 4-22-18

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#4520272 - 09/19/17 12:46 PM Re: Why no love for Castrol GTX Diesel 15w-40??? [Re: CastroPenzoHavoMobil1]
28oz Offline


Registered: 04/20/17
Posts: 344
Loc: Utah, USA
I saw these at two local Walmarts for a couple months for $9.97 a jug. Then, they disappeared completely and haven't shown back up. I'm curious about it as well, although, I would think it's as good as any other diesel rated oil.
_________________________
-----------------
1990 Nissan 300zx - Castrol Edge Euro 0W-40
2004 Nissan Quest - Pennzoil Platinum Euro 0W-40
2003 Ford Excursion 7.3 PSD - Mobil 1 TDT 5w-40

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#4520369 - 09/19/17 02:31 PM Re: Why no love for Castrol GTX Diesel 15w-40??? [Re: CastroPenzoHavoMobil1]
BrocLuno Offline


Registered: 09/06/15
Posts: 5526
Loc: Kalifornia Kollective
If it's CAT and Cummin's rated, it is fine oil smile
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Formerly in marine engineering. In an earlier life I owned my own petroleum tank truck, and hauled for the majors and independent's.

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#4520420 - 09/19/17 03:56 PM Re: Why no love for Castrol GTX Diesel 15w-40??? [Re: CastroPenzoHavoMobil1]
Bgallagher Offline


Registered: 04/17/12
Posts: 3159
Loc: Boston, MA
$5 a gallon I would stock up. I feel it was never the most popular because it was more expensive than options which are just as good.
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2017 Chevy Traverse - 28k - Delco Dexos 1 and PF63
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#4520455 - 09/19/17 04:25 PM Re: Why no love for Castrol GTX Diesel 15w-40??? [Re: CastroPenzoHavoMobil1]
ArcticDriver Offline


Registered: 01/27/17
Posts: 1139
Loc: USA
Product Data Sheet:

https://msdspds.castrol.com/bpglis/FusionPDS.nsf/Files/06974BB666CA91ED80257C320042918B/$File/GTX_Diesel_PDS_2012.pdf

Castrol GTX Diesel engine oil exceeds Cummins CES 20081 specification (but does not have Stamp of Approval).

I would use it in my old VW 1.6 NA diesel rabbit.
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Multiple Diesel and Gasoline vehicles

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#4520855 - 09/20/17 01:34 AM Re: Why no love for Castrol GTX Diesel 15w-40??? [Re: CastroPenzoHavoMobil1]
Garak Offline


Registered: 12/05/09
Posts: 24620
Loc: Regina, Saskatchewan, Canada
We see it up here, but Castrol also tends to have about 3 other 15w-40 HDEO varieties on the same shelf, and the GTX often just gets lost in the shuffle with the PCMOs, whereas Vection and Elixion are shelved separately.
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Plain, simple Garak.

2008 Infiniti G37 - Shell ROTELLA T6 Multi-Vehicle 5w-30, NAPA Gold 7356
1984 F-150 4.9L - Quaker State GB 10w-30, Wix 51515

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#4521790 - 09/21/17 12:05 AM Re: Why no love for Castrol GTX Diesel 15w-40??? [Re: CastroPenzoHavoMobil1]
leroyd92 Offline


Registered: 01/21/14
Posts: 494
Loc: AZ
I was wondering the same thing. I bought 4 gallons the other day. Its going in gas motors though...
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#4521924 - 09/21/17 07:34 AM Re: Why no love for Castrol GTX Diesel 15w-40??? [Re: CastroPenzoHavoMobil1]
SR5 Offline


Registered: 07/07/15
Posts: 4471
Loc: Down Under
Here in the truck section will have Castrol RX next to the Mobil Delvac, Shell Rimula, Delo etc

In the car section you will the GTX 15W40 Diesel, but also stuff like Castrol Edge 0W40 C3 for the light duty Euro diesel cars.

The GTX Diesel is a good oil I'm sure, but it's a bit of a marketing fence sitter, neither here nor there.
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Penrite Vantage 10W40 SN & A3/B4 + Wesfil-Cooper Z154

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#4521936 - 09/21/17 07:42 AM Re: Why no love for Castrol GTX Diesel 15w-40??? [Re: leroyd92]
SR5 Offline


Registered: 07/07/15
Posts: 4471
Loc: Down Under
Originally Posted By: leroyd92
I was wondering the same thing. I bought 4 gallons the other day. Its going in gas motors though...

A great application IMO, especially for old school flat tappet engines.

It's API CJ-4 / SN, KV 100 = 15.5 cSt, TBN = 8.5 and SA = 0.95 %

It's a thick strong oil, with good TBN, full SAPS and probably high zinc.
_________________________
Penrite Vantage 10W40 SN & A3/B4 + Wesfil-Cooper Z154

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