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5w30 GTX conventional is now a blend #4469496
07/24/17 11:02 PM
07/24/17 11:02 PM
Joined: Feb 2004
Posts: 10
Pecan Gap,Tx
cadjak Offline OP
cadjak  Offline OP
Joined: Feb 2004
Posts: 10
Pecan Gap,Tx
For years I did't have to think about oil choices. I stuck with Castrol GTX conventional motor oil. I got my 5.8L, 1994 Ford van up to 260K and I figured I was good. I didn't have to think about oil at the BITOG level. Just buy it and change every 3k, using a Napa Gold filter. Now, according to Castrol, the 5W30 GTX is called GTX Ultraclean, and it's a blend. I don't know if want to "clean away the old sludge" from my engine. It could be holding stuff together. So, stick with dino, like Chevron Supreme, or make the switch to some high mileage juice. Conventional has got me this far, so do I stick with it? I might be living in the distant past. Oil tech might have come a long way and I should just try some sort of blend or full synthetic. The couple of bucks price difference is no big deal.

Re: 5w30 GTX conventional is now a blend [Re: cadjak] #4469504
07/24/17 11:12 PM
07/24/17 11:12 PM
Joined: Sep 2015
Posts: 5,839
Kalifornia Kollective
BrocLuno Offline
BrocLuno  Offline
Joined: Sep 2015
Posts: 5,839
Kalifornia Kollective
Sludge has little strength. It ain't holding nothing together laugh

Oils evolve. We must move with them smile


Formerly in marine engineering. In an earlier life I owned my own petroleum tank truck, and hauled for the majors and independent's.
Re: 5w30 GTX conventional is now a blend [Re: cadjak] #4469510
07/24/17 11:24 PM
07/24/17 11:24 PM
Joined: Aug 2004
Posts: 1,947
5600 feet elevation, Arizona
double vanos Offline
double vanos  Offline
Joined: Aug 2004
Posts: 1,947
5600 feet elevation, Arizona
With ever tightening performance parameters, may dino oils are mixing in high quality base oils to meet specs. As such, many dino oils are really blends whether the manufacturer wants to reveal this or not.
Stay with the GTX, it's served you well , why change?


Sabine Schmitz is the Queen of the 'Ring; Svetlana Kapanina is the Queen of the SKIES...
Re: 5w30 GTX conventional is now a blend [Re: cadjak] #4469511
07/24/17 11:27 PM
07/24/17 11:27 PM
Joined: Apr 2014
Posts: 1,854
Spring,Texas
Bud_One Offline
Bud_One  Offline
Joined: Apr 2014
Posts: 1,854
Spring,Texas
Chevron Supreme conventional 5W30 is a synthetic blend as well.
Keep using the Castrol GTX if you like, it's gotten you this far and probably has been a syn blend since it changed to the SN API designation.
I say its marketing fluff now,with its new name.


16 Civic-QSUD 0W-20, XG7317
14 Civic-Idemitsu Zepro 0W-20, XG7317
05 Chevy 2500HD-QSUD 10W-30, XG3675
97 Accord Wagon-Havoline HM 10W-30, PH3593A
Re: 5w30 GTX conventional is now a blend [Re: cadjak] #4469513
07/24/17 11:28 PM
07/24/17 11:28 PM
Joined: Jun 2012
Posts: 1,699
USA
oldhp Offline
oldhp  Offline
Joined: Jun 2012
Posts: 1,699
USA
With you changing oil/oil filter every 3K I doubt you have to worry about sludge.



Re: 5w30 GTX conventional is now a blend [Re: cadjak] #4469518
07/24/17 11:35 PM
07/24/17 11:35 PM
Joined: Mar 2015
Posts: 5,018
Virginia
bbhero Offline
bbhero  Offline
Joined: Mar 2015
Posts: 5,018
Virginia
Well, if the GTX has gotten ya this far then why not continue on with it? Plus like oldhp said if you are changing the oil every 3 thousand miles then you probably don't have any real sludge problem. If you are doing a lot of highway driving you really could go 6k miles and likely more on a run.

Last edited by bbhero; 07/24/17 11:36 PM.

Nissan Altima 3.5 Coupe
Quaker State High Mileage 5w30 Purolator Boss 14610
"Treat your family like your friends and treat your friends like your family."
Re: 5w30 GTX conventional is now a blend [Re: cadjak] #4469528
07/25/17 12:18 AM
07/25/17 12:18 AM
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Merkava_4 Offline
Merkava_4  Offline
Joined: Jan 2007
Posts: 17,501
Clovis, CA
The cleanest oil I've ever seen is Chevron Supreme. It's a real light blond color like Corona beer.

Re: 5w30 GTX conventional is now a blend [Re: cadjak] #4469529
07/25/17 12:43 AM
07/25/17 12:43 AM
Joined: Jul 2017
Posts: 4
Sussex County, New Jersey, USA
jaytb8842 Offline
jaytb8842  Offline
Joined: Jul 2017
Posts: 4
Sussex County, New Jersey, USA
According to the Castrol website, they still make the GTX and GTX Ultraclean which are under the conventional catagory, not the synthetic blend.

Re: 5w30 GTX conventional is now a blend [Re: cadjak] #4469603
07/25/17 04:59 AM
07/25/17 04:59 AM
Joined: May 2005
Posts: 10,268
ROCHESTER, NY
Char Baby Offline
Char Baby  Offline
Joined: May 2005
Posts: 10,268
ROCHESTER, NY
I don't know this for a fact however, after speaking to the Tech Dept of oil companies, I understand that most conventional oils in the 5W20 & 5W30 are syn blend(NOT 10W30 & 10W40 however) although at a lower rate of syn oil than oils actually labeled "SYN Blend". It has been this way/moving in this direction for over a decade and since joining BITOG in '05

Last edited by Char Baby; 07/25/17 05:06 AM.

"Retired"
-----------------------------------

'80 Firebird FORMULA V8/4bbl-purchased "NEW"
'15 Nissan Altima 2.5 SV
'15 Honda Civic LX(17K)
Re: 5w30 GTX conventional is now a blend [Re: cadjak] #4469819
07/25/17 09:19 AM
07/25/17 09:19 AM
Joined: Aug 2004
Posts: 4,629
Katy, Republic of Texas
blupupher Offline
blupupher  Offline
Joined: Aug 2004
Posts: 4,629
Katy, Republic of Texas
There have been many oil formulation changes since you started using Castrol.
The '94 is probably spec'ed for SG or SH oil, so you have gone through SJ, SL, SM, and now SN, all have had improved formulas, and as mentioned, since SN (2011) has probably been a blend of some sort.
It is a marketing change that they decided to jump on the bandwagon and start calling it a blend.


1994 Honda VT1100: Peak 15w-40/PSL/2500 mile OCI
2002 Ford F150: GTX HM 5w-20/EcoGard Syn/1yr OCI
2012 Scion xB: QSUD 0w-20/CQ Blue/5k OCI

Re: 5w30 GTX conventional is now a blend [Re: Char Baby] #4469895
07/25/17 10:23 AM
07/25/17 10:23 AM
Joined: Dec 2002
Posts: 4,147
The Garden State
Whimsey Offline
Whimsey  Offline
Joined: Dec 2002
Posts: 4,147
The Garden State
Originally Posted By: Char Baby
I don't know this for a fact however, after speaking to the Tech Dept of oil companies, I understand that most conventional oils in the 5W20 & 5W30 are syn blend(NOT 10W30 & 10W40 however) although at a lower rate of syn oil than oils actually labeled "SYN Blend". It has been this way/moving in this direction for over a decade and since joining BITOG in '05


That's a logical explanation of the differences between "conventional" and "synthetic blend" oils now a days thumbsup.

Whimsey

Re: 5w30 GTX conventional is now a blend [Re: cadjak] #4469902
07/25/17 10:27 AM
07/25/17 10:27 AM
Joined: Mar 2017
Posts: 88
OK, USA
bradtech Offline
bradtech  Offline
Joined: Mar 2017
Posts: 88
OK, USA
GTX UltraClean is a different oil than regular GTX. I didn't think either were a blend with synthetic. I have an older vehicle like you. 1993 S10 with 2.8L. I switched over recently from regular dino to green bottle GTX High Mileage 10w30 High Mileage blend. It has just started to help on consumption and engine runs smooth. I would run regular GTX or GTX Ultraclean with confidence. I bet the Ultraclean just has more cleaning detergents than regular GTX.


Last edited by bradtech; 07/25/17 10:29 AM.

17 Chevrolet Malibu 3k 5w30 AC Delco Full Syn
08 Hyundai Santa Fe 78k 5w20 GTX HM OEM Filter
93 Chevy S10 203k 10w30 GTX HM ACDELCO PF52E Filter
Re: 5w30 GTX conventional is now a blend [Re: cadjak] #4469912
07/25/17 10:39 AM
07/25/17 10:39 AM
Joined: Jun 2006
Posts: 4,972
Great White North.. eh
webfors Offline
webfors  Offline
Joined: Jun 2006
Posts: 4,972
Great White North.. eh
VWB states a syn blend in their spec sheets now.


17 Cadillac ATS 2.0T, Edge D1G2 5w30, XG10575
17 Dodge GC, VWB 5w20, Fram DL11665
15 DL650, Rotella T6 5w40, KN-138
Small engines; RT5 10w30
Re: 5w30 GTX conventional is now a blend [Re: Char Baby] #4469931
07/25/17 11:11 AM
07/25/17 11:11 AM
Joined: Jan 2016
Posts: 597
Nebraska
Duffyjr Offline
Duffyjr  Offline
Joined: Jan 2016
Posts: 597
Nebraska
Originally Posted By: Char Baby
I don't know this for a fact however, after speaking to the Tech Dept of oil companies, I understand that most conventional oils in the 5W20 & 5W30 are syn blend(NOT 10W30 & 10W40 however) although at a lower rate of syn oil than oils actually labeled "SYN Blend". It has been this way/moving in this direction for over a decade and since joining BITOG in '05


I seen this on the Napa site the last time they had it on sale. I bought some 5w30 for the wife's car and when I got it home I seen on the bottle it said it was syn blend but on my 10w30 bottles it didn't say that so I went to the site to verify and it's the same there.


89 GMC Sierra T5 10w30/Wix
08 Lucerne CX NAPA Blend 5w30/Napa Gold
18 Toro Super Recycler T5 10w30
Re: 5w30 GTX conventional is now a blend [Re: Whimsey] #4470062
07/25/17 02:11 PM
07/25/17 02:11 PM
Joined: Dec 2009
Posts: 25,355
Regina, Saskatchewan, Canada
Garak Offline
Garak  Offline
Joined: Dec 2009
Posts: 25,355
Regina, Saskatchewan, Canada
Originally Posted By: Whimsey
That's a logical explanation of the differences between "conventional" and "synthetic blend" oils now a days thumbsup.

The difference is a few bucks a jug, I guess. wink Oddly, synthetics have been coming down a little up here (even at regular price). Synthetic blends (such as HM oils) have barely budged, and see few sales lately. The conventionals have steadily been creeping higher, with few exceptions.

It's to the point now that to buy a conventional at any decent price, you have to run to the distributor or hit NAPA, which is often matching Walmart, and beating Canadian Tire by a significant margin.


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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