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300ZX oil change question #4478465
08/03/17 05:53 PM
08/03/17 05:53 PM
Joined: Dec 2006
Posts: 19,253
Dallas,Tx USA
aquariuscsm Offline OP
aquariuscsm  Offline OP
Joined: Dec 2006
Posts: 19,253
Dallas,Tx USA
I need to change the oil this weekend. It holds 4.5 quarts. I have 4 quarts of Pennzoil Platinum 10W30 left. I have some leftovers laying around......half quart of Pennzoil Platinum 5W20, about a quart of Pennzoil High Mileage (conventional) 10W40,and a half quart of PYB 10W40. Which oil would you use for that "half quart"?

These cars are not supposed to use anything "thinner" than 10W30 per Nissan fsm. Would a half quart of 5W20 be the least bit harmful?


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
Pennzoil Platinum 10W30

Re: 300ZX oil change question [Re: aquariuscsm] #4478474
08/03/17 06:04 PM
08/03/17 06:04 PM
Joined: Jun 2011
Posts: 1,805
Crawfordville FL
SilverFusion2010 Offline
SilverFusion2010  Offline
Joined: Jun 2011
Posts: 1,805
Crawfordville FL
Add either of the half quarts. I'd use the 5w20 now and keep the 10w40 for top off


2010 Ford Fusion SE 3.0L V6, 181 miles M1 HM 10w-30
Re: 300ZX oil change question [Re: SilverFusion2010] #4478482
08/03/17 06:19 PM
08/03/17 06:19 PM
Joined: Dec 2006
Posts: 19,253
Dallas,Tx USA
aquariuscsm Offline OP
aquariuscsm  Offline OP
Joined: Dec 2006
Posts: 19,253
Dallas,Tx USA
Originally Posted By: SilverFusion2010
Add either of the half quarts. I'd use the 5w20 now and keep the 10w40 for top off


That's what I'm thinking too,to keep it all Pennzoil Platinum in the engine.


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
Pennzoil Platinum 10W30

Re: 300ZX oil change question [Re: aquariuscsm] #4478487
08/03/17 06:23 PM
08/03/17 06:23 PM
Joined: Dec 2016
Posts: 7,502
Waco, TX
Linctex Offline
Linctex  Offline
Joined: Dec 2016
Posts: 7,502
Waco, TX
I'll echo that - use that last bit of Pennz Plat 5W-20


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: 300ZX oil change question [Re: Linctex] #4478511
08/03/17 06:47 PM
08/03/17 06:47 PM
Joined: Jul 2013
Posts: 2,337
Outer Banks, NC
NormanBuntz Offline
NormanBuntz  Offline
Joined: Jul 2013
Posts: 2,337
Outer Banks, NC
Originally Posted By: Linctex
I'll echo that - use that last bit of Pennz Plat 5W-20


I disagree. That V-6 motor likes a diet of 5w-30. I would not use the 20. BTW I had a 1990 300ZX.


2017 Honda Odyssey SE, 17K
2013 Honda Accord LX, 58K
2007 Honda Ridgeline RTS, 89K
2007 Infiniti M35, 107K
Re: 300ZX oil change question [Re: aquariuscsm] #4478518
08/03/17 06:51 PM
08/03/17 06:51 PM
Joined: Jun 2011
Posts: 1,805
Crawfordville FL
SilverFusion2010 Offline
SilverFusion2010  Offline
Joined: Jun 2011
Posts: 1,805
Crawfordville FL
I don't think a half quart of 5w20 is going to change the viscosity much


2010 Ford Fusion SE 3.0L V6, 181 miles M1 HM 10w-30
Re: 300ZX oil change question [Re: aquariuscsm] #4478538
08/03/17 07:10 PM
08/03/17 07:10 PM
Joined: Jul 2016
Posts: 682
il usa
merconvvv Offline
merconvvv  Offline
Joined: Jul 2016
Posts: 682
il usa
Save pp 5w20 to top off honda.
Use pyb 10w40 for zx.
Or just flip coins.


1988 Mazda RX7 na PP 10w30 Noack 4.7
1994 Chrysler Concorde 3.3
1999 Ford Expedition 4.6 QSUD 10W30 NOACK 5.0
Re: 300ZX oil change question [Re: aquariuscsm] #4478549
08/03/17 07:27 PM
08/03/17 07:27 PM
Joined: Sep 2015
Posts: 4,020
Connecticut
69GTX Offline
69GTX  Offline
Joined: Sep 2015
Posts: 4,020
Connecticut
Hot summer in Texas? I'd go up a notch to the 10w-40's for the extra 1/2 quart. I'd save the 5w-20 for a "winter" oil change.


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

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: 300ZX oil change question [Re: aquariuscsm] #4478566
08/03/17 07:52 PM
08/03/17 07:52 PM
Joined: Nov 2011
Posts: 85
Luling, LA
asleepz Offline
asleepz  Offline
Joined: Nov 2011
Posts: 85
Luling, LA
Had an 87 Turbo, it ate a diet of Mobil1 5-30. Bulletproof motors if taken care of. All of the VG30XXXX’s


14F350 6.7L 86K MC15w-40/Donaldson
09Pilot 3.5L 83K PP5w-30/OEM
07Elite 80 2675mi HGMO10w-40/ScreenDoor
92Accord 2.2L 132K PP5w-30/OEM
Re: 300ZX oil change question [Re: aquariuscsm] #4478584
08/03/17 08:17 PM
08/03/17 08:17 PM
Joined: Jul 2017
Posts: 542
Texas (south)
FermeLaPorte Offline
FermeLaPorte  Offline
Joined: Jul 2017
Posts: 542
Texas (south)
I would use it. I reckon it won't make much of a difference unless you have a lot of what folks here call "fuel dilution"


Always Mobil 1
2014 1.6L Nissan Versa Sedan, 5 spd, 5k OCI.
2011 3.5L Chevrolet Impala, Automatic, 5k OCI.
Re: 300ZX oil change question [Re: aquariuscsm] #4478847
08/04/17 07:45 AM
08/04/17 07:45 AM
Joined: May 2009
Posts: 12,318
N.H, U.S.A.
ARCOgraphite Offline
ARCOgraphite  Offline
Joined: May 2009
Posts: 12,318
N.H, U.S.A.
More than not, the Motor will like the 20 grade "additive" in there.
I think my Nissan Rogue might have a higher specific output than your Z - but I havent the calculus at hand ....
It runs MORE happily 4.5 qt 5w30 and 1/2 qt 5w20. engine loves it and you will still be a 30 grade.


2019 VW Jetta S,6M OCI#0 62mi-Castrol Edge Prof VW508+OE Filter; '17 Subaru Crosstrek CVT OC#5 37K mi-SOA/Idemitsu 0w20 + SOA Filter
Re: 300ZX oil change question [Re: merconvvv] #4478965
08/04/17 10:35 AM
08/04/17 10:35 AM
Joined: Feb 2013
Posts: 11,198
Phoenix, AZ
Nick1994 Offline
Nick1994  Offline
Joined: Feb 2013
Posts: 11,198
Phoenix, AZ
Originally Posted By: merconvvv
Save pp 5w20 to top off honda.
Use pyb 10w40 for zx.
Or just flip coins.
+1


2015 Hyundai Sonata 2.4L 90k Motorcraft Synthetic Blend 5w30 & OEM
2000 Toyota Camry 2.2L 232k Valvoline 5w30 & Fram Ultra
1996 Jeep Cherokee 4.0L 148k Mobil 1 HM 10w40 & Fram Ultra

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