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Mixing Pennzoil Platinum and Castrol Magnatec. #4441184
06/25/17 02:41 PM
06/25/17 02:41 PM
Joined: Nov 2016
Posts: 190
Missouri
GRWOil Offline OP
GRWOil  Offline OP
Joined: Nov 2016
Posts: 190
Missouri
I went to change the oil yesterday in my sister's 2016 Hyundai Accent. It's a 1.6L naturally asperated GDI engine, with a 3.7 quart sump. When I changed it last winter, I filled it from a 5 qt. jug of PP 5w-20 and put a fram Ultra on it. 7500 miles later, I had about 1.5 quarts of PP left from the first oil change and some bottles of Magnatec 5w-20 in the garage.

Long story short, it's got about half PP and half Magnatec, both 5w-20. I didn't think much of it at the time, but now I'm having second thoughts. Are these two oils incompatible? Could there be issues with long-term performance (7,500 miles/6 months) with a mix from two different brands?

Re: Mixing Pennzoil Platinum and Castrol Magnatec. [Re: GRWOil] #4441186
06/25/17 02:47 PM
06/25/17 02:47 PM
Joined: Oct 2014
Posts: 11,854
Idaho
CT8 Offline
CT8  Offline
Joined: Oct 2014
Posts: 11,854
Idaho
The oils will be fine.


2015 Ford F150 2.7
2018 Ford F350 6.2
Re: Mixing Pennzoil Platinum and Castrol Magnatec. [Re: GRWOil] #4441214
06/25/17 03:12 PM
06/25/17 03:12 PM
Joined: Mar 2016
Posts: 1,351
toronto
PeterPolyol Offline
PeterPolyol  Offline
Joined: Mar 2016
Posts: 1,351
toronto
popcorn2

Re: Mixing Pennzoil Platinum and Castrol Magnatec. [Re: GRWOil] #4441245
06/25/17 03:58 PM
06/25/17 03:58 PM
Joined: Aug 2004
Posts: 4,637
Katy, Republic of Texas
blupupher Offline
blupupher  Offline
Joined: Aug 2004
Posts: 4,637
Katy, Republic of Texas
Many say mix away, many give dire warnings that there could be problems.

No you will not have an exact known quality of oil, but you are mixing 2 good oils. No different that the millions upon millions of vehicles that have whatever oil added as top off oil during an oil change.

I am of the mix away camp, and have mixed different brand (and weights) of oils with no issues (which proves nothing). If the need arises, I will continue to do so. I know that I have a few qts of misc oil that will eventually be mixed for an oil change in my truck.
These include 2 qts PU 5w-20, 1 qt M1 EP 0w-20, 2 qt Auto Zone Syn 0w-20, 1 qt Havoline HM 5w-20.


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: Mixing Pennzoil Platinum and Castrol Magnatec. [Re: GRWOil] #4441255
06/25/17 04:12 PM
06/25/17 04:12 PM
Joined: Mar 2016
Posts: 985
MT
jongies3 Offline
jongies3  Offline
Joined: Mar 2016
Posts: 985
MT
Ever since SL, oil companies have been required by the government to make it so all their additives are compatible with all other oil additives. Used to be a bad idea to do this back in the day, but things are different now so don't worry about it.


2004 Toyota Tacoma 3.4 V6: Mobil 1 AFE 0W-30, FRAM TG-3600 filter
1969 Mustang Mach 1 5.8 V8: PYB 10W-30 Napa Gold 1515 filter
1997 Ford F-250 HD 7.3 Powerstroke V8: T6 5W-40 FRAM PH-3786 filter
Re: Mixing Pennzoil Platinum and Castrol Magnatec. [Re: GRWOil] #4441261
06/25/17 04:19 PM
06/25/17 04:19 PM
Joined: May 2017
Posts: 127
South Texas Rancho
TexasVaquero Offline
TexasVaquero  Offline
Joined: May 2017
Posts: 127
South Texas Rancho
I don't think anything bad is gonna happen. One thing I have been told by Mobil 1 is that if you mix different oils, you reduce both oils' benefits, but that does not make them any worse.


2014 NISSAN VERSA 5spd M/T- M1 EP 5w30 and M1 EP Filter. 5k OCI.
2011 CHEVY IMPALA 3.5ltrs - M1 HM 5w30 and M1 EP Filter. 3k OCI.
Re: Mixing Pennzoil Platinum and Castrol Magnatec. [Re: jongies3] #4441304
06/25/17 05:23 PM
06/25/17 05:23 PM
Joined: Dec 2002
Posts: 40,890
'Stralia
Shannow Offline
Shannow  Offline
Joined: Dec 2002
Posts: 40,890
'Stralia
Originally Posted By: jongies3
Ever since SL, oil companies have been required by the government to make it so all their additives are compatible with all other oil additives. Used to be a bad idea to do this back in the day, but things are different now so don't worry about it.


Really ? show me where that's a fact ...

Re: Mixing Pennzoil Platinum and Castrol Magnatec. [Re: GRWOil] #4441308
06/25/17 05:26 PM
06/25/17 05:26 PM
Joined: Jun 2011
Posts: 1,755
Crawfordville FL
SilverFusion2010 Offline
SilverFusion2010  Offline
Joined: Jun 2011
Posts: 1,755
Crawfordville FL
When possible do not mix. The oil isn't going to turn into tar or anything but you're guessing at additive packages and don't really know what you end up with. It's likely that the mix would be less effective than either oil by itself depending on the additives in the two oils.

The folks who mix are trying to build a better mousetrap. It's not needed.


2010 Ford Fusion SE 3.0L V6, 178k miles M1 HM 10w-30
Re: Mixing Pennzoil Platinum and Castrol Magnatec. [Re: GRWOil] #4441314
06/25/17 05:33 PM
06/25/17 05:33 PM
Joined: Sep 2015
Posts: 3,861
Connecticut
69GTX Offline
69GTX  Offline
Joined: Sep 2015
Posts: 3,861
Connecticut
If you're going to mix oil brands/grades, those 2 are fairly close in additive packages. High calcium, no magnesium, no sodium oils.


----------------

2001 Lincoln Cont 4.6L DOHC/ 39K mi / QS HM 5w30 / FUG XG2
1999 Camaro SS M6 /19K /Mobil 1 0w40 /Fram UG /GM MTL-ATF
1969 Ply GTX/RRs
Re: Mixing Pennzoil Platinum and Castrol Magnatec. [Re: GRWOil] #4441373
06/25/17 06:31 PM
06/25/17 06:31 PM
Joined: Jul 2015
Posts: 4,624
Down Under
SR5 Offline
SR5  Offline
Joined: Jul 2015
Posts: 4,624
Down Under
I would not worry about it, for 6 months in a Hyundai with two name brand synthetics. I worry more about people who don't check the oil level and let it get too low.


Penrite Vantage 10W40 SN & A3/B4 + Wesfil-Cooper Z154
Re: Mixing Pennzoil Platinum and Castrol Magnatec. [Re: GRWOil] #4441387
06/25/17 06:49 PM
06/25/17 06:49 PM
Joined: Nov 2010
Posts: 2,814
California
Errtt Offline
Errtt  Offline
Joined: Nov 2010
Posts: 2,814
California
Once knew someone who mixed like 4 different HM oils. I think it was a quart each for about a 4 quart sump. He had some weird name of his mix. Your Pentrol Plattec should be fine.

Re: Mixing Pennzoil Platinum and Castrol Magnatec. [Re: GRWOil] #4441403
06/25/17 07:01 PM
06/25/17 07:01 PM
Joined: Jul 2015
Posts: 4,624
Down Under
SR5 Offline
SR5  Offline
Joined: Jul 2015
Posts: 4,624
Down Under
Magna-Platinum


Penrite Vantage 10W40 SN & A3/B4 + Wesfil-Cooper Z154
Re: Mixing Pennzoil Platinum and Castrol Magnatec. [Re: GRWOil] #4441419
06/25/17 07:23 PM
06/25/17 07:23 PM
Joined: Oct 2015
Posts: 475
MN
WillsYoda Offline
WillsYoda  Offline
Joined: Oct 2015
Posts: 475
MN
Mix away camp here. Similar add packs. Will work fine. I do it, since I hate waste.

Re: Mixing Pennzoil Platinum and Castrol Magnatec. [Re: Errtt] #4441533
06/25/17 09:46 PM
06/25/17 09:46 PM
Joined: Feb 2007
Posts: 8,177
Grand Rapids, MI
ThirdeYe Offline
ThirdeYe  Offline
Joined: Feb 2007
Posts: 8,177
Grand Rapids, MI
Originally Posted By: Errtt
Once knew someone who mixed like 4 different HM oils. I think it was a quart each for about a 4 quart sump. He had some weird name of his mix. Your Pentrol Plattec should be fine.


I had 3 different oils in my crankcase on my last oil change. I started with Pennzoil Platinum High Mileage, but topped off with Havoline High Mileage and 2 quarts of Formula Shell along the way (all in 5W-20). Still ran just fine. In fact, for some reason it seemed to consume less after it became more of a hodgepodge of oils. grin


07 Honda Accord - 606k - Havoline High Mileage 5W-20/Purolator Synthetic PSL14610
98 Camaro Z28 - 120k - QS Defy 5w30/AC Delco PF46
Re: Mixing Pennzoil Platinum and Castrol Magnatec. [Re: jongies3] #4441540
06/25/17 09:59 PM
06/25/17 09:59 PM
Joined: Sep 2014
Posts: 2,097
US-WA
Dyusik Offline
Dyusik  Offline
Joined: Sep 2014
Posts: 2,097
US-WA
Originally Posted By: jongies3
Ever since SL, oil companies have been required by the government to make it so all their additives are compatible with all other oil additives. Used to be a bad idea to do this back in the day, but things are different now so don't worry about it.

That is your answer, including atf etc.


95 Cherokee 190K DELO 10W30, XG8
07 IS250 100K Napa 10w30, FULL
04 YZF-R1 19K DELO 15w40, XG7317
99 HD XL1200S 20K VR1 20w50, NG1515
14 RX450h 33k PP MIX, NG7047
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