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#4559496 - 10/30/17 06:27 PM Why is Castrol GTX now labelled semi synthetic?
wolf_06 Offline


Registered: 06/11/12
Posts: 491
Loc: Atlantic, Canada
Were they forced to add "semi synthetic" on the bottle or its always been a semi synthetic without knowing it?
_________________________
2011 Chevy Cruze 1.8L 6AT
Castrol Magnatec syn blend 5w30, NAPA filter.

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#4559504 - 10/30/17 06:32 PM Re: Why is Castrol GTX now labelled semi synthetic? [Re: wolf_06]
Merkava_4 Offline


Registered: 01/30/07
Posts: 17501
Loc: Clovis, CA
Show me where it says "semi synthetic" !

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#4559506 - 10/30/17 06:33 PM Re: Why is Castrol GTX now labelled semi synthetic? [Re: Merkava_4]
wolf_06 Offline


Registered: 06/11/12
Posts: 491
Loc: Atlantic, Canada
Well a blend!!
_________________________
2011 Chevy Cruze 1.8L 6AT
Castrol Magnatec syn blend 5w30, NAPA filter.

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#4559507 - 10/30/17 06:33 PM Re: Why is Castrol GTX now labelled semi synthetic? [Re: wolf_06]
slacktide_bitog Offline


Registered: 03/20/08
Posts: 6141
Loc: USA
SN "dino" has at least some synthetic in it due to the stringent standards.

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#4559510 - 10/30/17 06:33 PM Re: Why is Castrol GTX now labelled semi synthetic? [Re: wolf_06]
StevieC Offline


Registered: 08/21/08
Posts: 17116
Loc: Ontario, Canada
I figure it's probably because the standards on conventional oil are getting really tough to meet that most are adding synthetic components to their oil to meet specifications and why not advertise it.

Also probably to justify the price because Castrol GTX is much more than PYB for example, at least here anyway.
_________________________
'15 Dodge Journey - 90,000 KM's - SSO 5w20
'06 Hyundai Santa Fe - 535,000km - SSO 0w30 (R.I.P)

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#4559514 - 10/30/17 06:35 PM Re: Why is Castrol GTX now labelled semi synthetic? [Re: wolf_06]
JohnnyJohnson Online   content


Registered: 10/22/09
Posts: 2731
Loc: Wet side WA
Some GTX has always been blend its never been a secret its always been right on the Jug. While others have been marked Full Synthetic!

https://www.walmart.com/ip/Castrol-GTX-MAGNATEC-5W-20-Full-Synthetic-Motor-Oil-5-QT/44580673

https://www.walmart.com/ip/Castrol-GTX-High-Mileage-5W-30-Synthetic-Blend-Motor-Oil-5-QT/34039137


Edited by JohnnyJohnson (10/30/17 06:38 PM)
_________________________
2004 Toyota Corolla 121598
Out: QSUD 5W-30 Purolator One 5030
In: Valvoline ML 5w-30 TG4967 117530 2-8-18
2006 Duramax 74016
Out: T6 5W-40 M1-303
In: T6 5W-40 XG9100 73752 4-22-18

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#4559515 - 10/30/17 06:35 PM Re: Why is Castrol GTX now labelled semi synthetic? [Re: wolf_06]
d00df00d Offline


Registered: 10/20/05
Posts: 11204
Loc: PA
There's no GTX any more. You're thinking of GTX Ultraclean. Similar name, but different product.
_________________________
2011 Mazda RX-8 R3
Mobil Super 5w-20

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#4559518 - 10/30/17 06:35 PM Re: Why is Castrol GTX now labelled semi synthetic? [Re: slacktide_bitog]
bbhero Offline


Registered: 03/20/15
Posts: 4611
Loc: Virginia
Slacktide is exactly right about this in my opinion.
_________________________
Nissan Altima 3.5 Coupe Valvoline Advanced Full Synthetic 5w30 Federated Auto 4612ex
"Treat your family like your friends and treat your friends like your family."

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#4559529 - 10/30/17 06:40 PM Re: Why is Castrol GTX now labelled semi synthetic? [Re: d00df00d]
JohnnyJohnson Online   content


Registered: 10/22/09
Posts: 2731
Loc: Wet side WA
Originally Posted By: d00df00d
There's no GTX any more. You're thinking of GTX Ultraclean. Similar name, but different product.


Better tell Walmart that their still selling it look at their online site.

A Walmart current online listing

https://www.walmart.com/ip/Castrol-GTX-M...=10&veh=aff



Edited by JohnnyJohnson (10/30/17 06:46 PM)
_________________________
2004 Toyota Corolla 121598
Out: QSUD 5W-30 Purolator One 5030
In: Valvoline ML 5w-30 TG4967 117530 2-8-18
2006 Duramax 74016
Out: T6 5W-40 M1-303
In: T6 5W-40 XG9100 73752 4-22-18

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#4559534 - 10/30/17 06:46 PM Re: Why is Castrol GTX now labelled semi synthetic? [Re: Merkava_4]
researcher Offline


Registered: 04/12/12
Posts: 248
Loc: Michigan
Originally Posted By: Merkava_4
Show me where it says "semi synthetic" !


It says "Synthetic blend" for the GTX Ultraclean, which is only available in 5w20 and 5w30.

Here's the pdf's from Castrol, read in the paragraph under "description"

5w20
https://msdspds.castrol.com/bpglis/FusionPDS.nsf/Files/3C78E248DD0A721780258035006BCAC8/$File/BPXE-A8DJRH.pdf

5w30
https://msdspds.castrol.com/bpglis/FusionPDS.nsf/Files/5DEAD6CF2F00966880258034005B0DB0/$File/BPXE-AAXEC9.pdf


Now about the GTX, while the GTX Ultraclean is now what the 5w20 and 5w30 is called.. The rest of the oil 10w30, 10w40 and 20w50 is conventional and still called GTX.

https://www.castrol.com/en_us/united-states/motor-oil/conventional-motor-oil/gtx-motor-oil.html

I ran into this when I was looking to use Castrol GTX and found the GTX Ultraclean popping up in place of the GTX. The only difference (after I sent off samples to the lab) is it's now a synthetic blend. The additive package is basically the same thing. Which is a good thing!

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#4559536 - 10/30/17 06:48 PM Re: Why is Castrol GTX now labelled semi synthetic? [Re: wolf_06]
benjy Offline


Registered: 08/23/10
Posts: 865
Loc: pa
with the advent of cheap group III "synthetics" that are mostly used today it takes a very small amount to be advertised as semi-synthetic!!! all of todays oils are a blend of various base oils + additives used to meet the spec they are showing on the container!

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#4559547 - 10/30/17 06:53 PM Re: Why is Castrol GTX now labelled semi synthetic? [Re: researcher]
Merkava_4 Offline


Registered: 01/30/07
Posts: 17501
Loc: Clovis, CA
Originally Posted By: researcher
Now about the GTX, while the GTX Ultraclean is now what the 5w20 and 5w30 is called.. The rest of the oil 10w30, 10w40 and 20w50 is conventional and still called GTX.


Typical. 10W-30 is always getting shortchanged.

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#4559572 - 10/30/17 07:14 PM Re: Why is Castrol GTX now labelled semi synthetic? [Re: wolf_06]
SilverFusion2010 Offline


Registered: 06/29/11
Posts: 1657
Loc: Crawfordville FL
10w-30 doesn't need the fancy base stocks to meet spec. That's less VI for ya
_________________________
2010 Ford Fusion SE 3.0L V6, 178k miles M1 HM 10w-30

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#4559575 - 10/30/17 07:15 PM Re: Why is Castrol GTX now labelled semi synthetic? [Re: wolf_06]
researcher Offline


Registered: 04/12/12
Posts: 248
Loc: Michigan
hey Merkava_4, I didn't make the marketing decision. hide

but I hear ya.. I really don't think it's much of a change at all, I did the VOA's and it's not like it's missing much of anything if you use GTX or the GTX Ultraclean, just a bit more detergents, not much to upset me, personally.

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#4559578 - 10/30/17 07:18 PM Re: Why is Castrol GTX now labelled semi synthetic? [Re: wolf_06]
zuluplus30 Offline


Registered: 11/23/13
Posts: 358
Loc: Fly-over country
Valvoline conventional says the same thing. "Premium quality synthetic blend base stocks" The lines between conventional/synthetic blend/synthetic got REALLY blurry with SN/GF-5.


https://sharena21.springcm.com/Public/Do...12-ac162d889bd1

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