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Castrol GTX MAGNATEC 5W-30 Full Synthetic Motor ? #4624549
01/05/18 07:58 AM
01/05/18 07:58 AM
Joined: Aug 2014
Posts: 326
Florida
lawnguy Offline OP
lawnguy  Offline OP
Joined: Aug 2014
Posts: 326
Florida
I would love to get as much feedback as possible regarding this oil. Thanks in advance!

Re: Castrol GTX MAGNATEC 5W-30 Full Synthetic Motor ? [Re: lawnguy] #4624606
01/05/18 09:09 AM
01/05/18 09:09 AM
Joined: Oct 2009
Posts: 3,206
Wet side WA
JohnnyJohnson Offline
JohnnyJohnson  Offline
Joined: Oct 2009
Posts: 3,206
Wet side WA
I screwed up big time when I didn't add five Jugs of this to my stash when it was on Rollback at Walmart for $15.88 6 weeks ago.

Last edited by JohnnyJohnson; 01/05/18 09:10 AM.

2004 Corolla 124642
Out: VML 5w-30 TG4967 OCI 5007 Miles
In: EDGE EP 5W-30 Bosch 3311 122537 7-18-18
2006 Duramax 74277
Out: T6 5W-40 M1-303
In: T6 5W-40 XG9100 74705 4-22-18
Re: Castrol GTX MAGNATEC 5W-30 Full Synthetic Motor ? [Re: JohnnyJohnson] #4624659
01/05/18 10:02 AM
01/05/18 10:02 AM
Joined: Oct 2014
Posts: 11,816
Idaho
CT8 Offline
CT8  Offline
Joined: Oct 2014
Posts: 11,816
Idaho
That must be why there in none on the shelves,,drat. Using Magnetec 5W-20 full syn my daughter did a 9400 mile oil change interval on her 2010 Ford Focus with the level barely moving on the dipstick. This oil change I used Valvoline Syn with Maxlife Technology in again 5W20 .The last 3 changes on my Ford F150 have been with Magnetech semi and full syn 5w-30.It is probably as good as any other oil. I like it because it is blended onthe higher side of its viscosity.


"Don't let your preconceived notions get in the way of facts."
Geoff Metcalf
Re: Castrol GTX MAGNATEC 5W-30 Full Synthetic Motor ? [Re: lawnguy] #4624680
01/05/18 10:18 AM
01/05/18 10:18 AM
Joined: Dec 2013
Posts: 2,087
socal
barkingspider Offline
barkingspider  Offline
Joined: Dec 2013
Posts: 2,087
socal
I have magnatec 5w30 syn blend in my escalade right now and itís all good. Bought the oil at AZ clearance 2 years ago $10 / jug. I would use the full syn at $17 if I didnít have a stash


06 Cadillac Escalade Ext
17 Cadillac ATS (wife)
05 Toyota Camry (daughter)
11 GMC Canyon off-road (daily)
Re: Castrol GTX MAGNATEC 5W-30 Full Synthetic Motor ? [Re: barkingspider] #4624704
01/05/18 10:43 AM
01/05/18 10:43 AM
Joined: Oct 2014
Posts: 11,816
Idaho
CT8 Offline
CT8  Offline
Joined: Oct 2014
Posts: 11,816
Idaho
I can't tell any difference between the Semi and Full Syn on the butt dyno.


"Don't let your preconceived notions get in the way of facts."
Geoff Metcalf
Re: Castrol GTX MAGNATEC 5W-30 Full Synthetic Motor ? [Re: lawnguy] #4624737
01/05/18 11:09 AM
01/05/18 11:09 AM
Joined: Mar 2012
Posts: 804
BerksCounty/Pa.
thorromig Offline
thorromig  Offline
Joined: Mar 2012
Posts: 804
BerksCounty/Pa.
As of now Castrol Magnatec 5W20 & 5W30 are both full synthetic. The 5w30 was semi synthetic at one time in the past. From what I read on here it shows good UOA numbers from those who had it tested. Never tried it but have the itch to do so. Priced under 20 dollars at Wally World in my parts.


00 Dodge Ram 5.2L 4x4 Edge 10W30 FU (91K)
08 Acura TL Type S 3.5L PUPP 5W20 FU (101K)
17 Jetta TSI SE 1.4L Turbo - Edge 0W40 FU (Hers) (4K)
Re: Castrol GTX MAGNATEC 5W-30 Full Synthetic Motor ? [Re: lawnguy] #4624753
01/05/18 11:24 AM
01/05/18 11:24 AM
Joined: Aug 2004
Posts: 4,628
Katy, Republic of Texas
blupupher Offline
blupupher  Offline
Joined: Aug 2004
Posts: 4,628
Katy, Republic of Texas
Almost everyone that has used it has said their engines are quieter. Not a lot of UOA on it since it used to be a blend, but was changed to a full syn (for whatever that means) about a year or so ago.

I have a bunch of it in my stash, have not gotten around to using it yet.
For ~$18 at Walmart it is a good deal.


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: Castrol GTX MAGNATEC 5W-30 Full Synthetic Motor ? [Re: lawnguy] #4624788
01/05/18 11:41 AM
01/05/18 11:41 AM
Joined: Oct 2013
Posts: 1,742
North Carolina
FutureDoc Offline
FutureDoc  Offline
Joined: Oct 2013
Posts: 1,742
North Carolina
Good oil, but I personally boycott it since it is a BP product and their oil spill response. Just my stance. smirk


'15 Hyundai Genesis Coupe 3.8 - Havoline 5w-30 & OEM
'14 Subaru Outback 2.5 - NAPA 0w-20 & Wix
'01 Toyota MR2 Spyder - Havoline 5w-30 & Wix
'82 Chevy C10
Re: Castrol GTX MAGNATEC 5W-30 Full Synthetic Motor ? [Re: lawnguy] #4624805
01/05/18 12:00 PM
01/05/18 12:00 PM
Joined: Nov 2010
Posts: 2,814
California
Errtt Offline
Errtt  Offline
Joined: Nov 2010
Posts: 2,814
California
Although my DD fill cap has 5w-20, I been using PYB 5w-30 since before 50k and it has over 140k on the clock now.
Have a jug of Magnatec 5w-20 sitting in the garage. Might try it sometime since I really have no other use for it.
Son had picked it up on sale because I had mentioned it.

Re: Castrol GTX MAGNATEC 5W-30 Full Synthetic Motor ? [Re: lawnguy] #4624982
01/05/18 02:58 PM
01/05/18 02:58 PM
Joined: Aug 2014
Posts: 326
Florida
lawnguy Offline OP
lawnguy  Offline OP
Joined: Aug 2014
Posts: 326
Florida
I have been using Mobil 1 ,and I have thought about switching to the 5w30 full synthetic.

Re: Castrol GTX MAGNATEC 5W-30 Full Synthetic Motor ? [Re: lawnguy] #4625066
01/05/18 04:03 PM
01/05/18 04:03 PM
Joined: Jun 2004
Posts: 305
Valencia, CA
Richie Offline
Richie  Offline
Joined: Jun 2004
Posts: 305
Valencia, CA
Might have to try this oil Been using either Mobil 1 or Valvoline Synthetic in my vehicles.

Re: Castrol GTX MAGNATEC 5W-30 Full Synthetic Motor ? [Re: thorromig] #4625135
01/05/18 05:19 PM
01/05/18 05:19 PM
Joined: Jan 2018
Posts: 534
San Antonio, TX
das_peikko Offline
das_peikko  Offline
Joined: Jan 2018
Posts: 534
San Antonio, TX
Originally Posted By: thorromig
As of now Castrol Magnatec 5W20 & 5W30 are both full synthetic.


What about 10W-30 ?

Re: Castrol GTX MAGNATEC 5W-30 Full Synthetic Motor ? [Re: das_peikko] #4625152
01/05/18 05:32 PM
01/05/18 05:32 PM
Joined: Apr 2012
Posts: 9,354
Kendall, FL
wemay Offline
wemay  Offline
Joined: Apr 2012
Posts: 9,354
Kendall, FL
Originally Posted By: das_peikko
Originally Posted By: thorromig
As of now Castrol Magnatec 5W20 & 5W30 are both full synthetic.


What about 10W-30 ?


10w30 is a blend.


'18 KIA Sportage 2.4L LX AWD: GTX Magnatec 5w20
'13 Hyundai Santa Fe Sport 2.0T: EDGE 5w30
Re: Castrol GTX MAGNATEC 5W-30 Full Synthetic Motor ? [Re: wemay] #4625180
01/05/18 05:50 PM
01/05/18 05:50 PM
Joined: Jul 2015
Posts: 4,624
Down Under
SR5 Offline
SR5  Offline
Joined: Jul 2015
Posts: 4,624
Down Under
Originally Posted By: wemay
Originally Posted By: das_peikko
Originally Posted By: thorromig
As of now Castrol Magnatec 5W20 & 5W30 are both full synthetic.


What about 10W-30 ?


10w30 is a blend.


Yes the Magnatec 10W30 is a blend in both North America (NA) and Australia (OZ).

In NA it's SN & GF-5
In OZ it's SN & A3/B4

I have used the Magnatec 10W30 semi-synthetic in Australia and found it to be a very smooth oil via my butt dino.


Penrite Vantage 10W40 SN & A3/B4 + Wesfil-Cooper Z154
Re: Castrol GTX MAGNATEC 5W-30 Full Synthetic Motor ? [Re: lawnguy] #4625661
01/06/18 10:06 AM
01/06/18 10:06 AM
Joined: Mar 2012
Posts: 366
Washington, USA
Onug Offline
Onug  Offline
Joined: Mar 2012
Posts: 366
Washington, USA
Itís a favorite for Ecoboost owners around here. Lots of good UOAs on it showing it holds up well to the harsh environment inside those motors. Iíve got 30 qts in my garage that Iíll get to soon.

You can still get it cheap on Amazon as well.


2016 F-150 3.5L Ecoboost
Current Oil: Castrol Magnatec 5W-30 and Fram Ultra filter
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