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#4478465 - 08/03/17 06:53 PM 300ZX oil change question
aquariuscsm Offline


Registered: 12/30/06
Posts: 18465
Loc: 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
Quaker State Ultimate Durability 5W30


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#4478474 - 08/03/17 07:04 PM Re: 300ZX oil change question [Re: aquariuscsm]
SilverFusion2010 Offline


Registered: 06/29/11
Posts: 1692
Loc: 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, 178k miles M1 HM 10w-30

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#4478482 - 08/03/17 07:19 PM Re: 300ZX oil change question [Re: SilverFusion2010]
aquariuscsm Offline


Registered: 12/30/06
Posts: 18465
Loc: 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
Quaker State Ultimate Durability 5W30


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#4478487 - 08/03/17 07:23 PM Re: 300ZX oil change question [Re: aquariuscsm]
Linctex Offline


Registered: 12/31/16
Posts: 6189
Loc: 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."

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#4478511 - 08/03/17 07:47 PM Re: 300ZX oil change question [Re: Linctex]
NormanBuntz Offline


Registered: 07/27/13
Posts: 2201
Loc: 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, 15K
2013 Honda Accord LX, 58K
2007 Honda Ridgeline RTS, 87K
2007 Infiniti M35, 106K

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#4478518 - 08/03/17 07:51 PM Re: 300ZX oil change question [Re: aquariuscsm]
SilverFusion2010 Offline


Registered: 06/29/11
Posts: 1692
Loc: 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, 178k miles M1 HM 10w-30

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#4478538 - 08/03/17 08:10 PM Re: 300ZX oil change question [Re: aquariuscsm]
merconvvv Offline


Registered: 07/10/16
Posts: 682
Loc: 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

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#4478549 - 08/03/17 08:27 PM Re: 300ZX oil change question [Re: aquariuscsm]
69GTX Offline


Registered: 09/23/15
Posts: 3829
Loc: 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

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#4478566 - 08/03/17 08:52 PM Re: 300ZX oil change question [Re: aquariuscsm]
asleepz Offline


Registered: 11/25/11
Posts: 85
Loc: 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

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#4478584 - 08/03/17 09:17 PM Re: 300ZX oil change question [Re: aquariuscsm]
FermeLaPorte Offline


Registered: 07/25/17
Posts: 536
Loc: 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.

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#4478847 - 08/04/17 08:45 AM Re: 300ZX oil change question [Re: aquariuscsm]
ARCOgraphite Offline


Registered: 05/17/09
Posts: 12127
Loc: 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.
_________________________
2014 Nissan Rogue S CVT, OC#9 41392mi-QSUD10W30 + M110A CHAMP Filter; 2017 Subaru Crosstrek CVT OC#2 ?? mi-SOA/Idemitsu 0w20 + SOA Filter

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#4478965 - 08/04/17 11:35 AM Re: 300ZX oil change question [Re: merconvvv]
Nick1994 Offline


Registered: 02/19/13
Posts: 10469
Loc: 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 82k Mobil 1 AFE 0w30 & OEM
2000 Toyota Camry 2.2L 229k Valvoline 5w30 & Fram Ultra
1996 Jeep Cherokee 4.0L 146k Mobil 1 HM 10w40 & Fram Ultra

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