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Shelf life of motor oils??? #4595208
12/05/17 03:52 PM
12/05/17 03:52 PM
Joined: Dec 2017
Posts: 6
Florida
anotheroldguy Offline OP
anotheroldguy  Offline OP
Joined: Dec 2017
Posts: 6
Florida
Hi Guys,
I am a newbie on this forum, so please be gentle...

A few days ago, I sent this email to Shell/Pennzoil Motor Oil:

"About six years ago, I moved, and apparently, I misplaced 5 one quart bottles of Platinum Full Synthetic SAE 5 W 30 motor oil. I just found them a couple of days ago. Very soon I will be due for my next oil change on my "Pride and Joy". Since this particular car has an eight quart capacity crankcase, I am 3 quarts short. My question to you is if I could safely mix or combine this "old" oil with three quarts of "new" oil. I remember reading somewhere that now Pennzoil synthetizes their oil from natural gas rather than from conventional oil stocks. I have no idea what the synthesis procedure was six years ago. I just want to make sure that this "two different oils" are miscible with one another and that I WILL NOT harm my engine."
The answer was short and sweet, somewhere along the lines of: Pennzoil Motor Oil has a shelf life of four years.We recommend you dump this oil and buy new one.

What do you guys think? Can I still safely use it or not? We are talking retail price of about $40.00 to just simply "Dump".

Thanks for your help.

Re: Shelf life of motor oils??? [Re: anotheroldguy] #4595211
12/05/17 03:54 PM
12/05/17 03:54 PM
Joined: Jan 2016
Posts: 849
NC
Vladiator Offline
Vladiator  Offline
Joined: Jan 2016
Posts: 849
NC
You can safely use it. Pennzoil only tells you what their lawyers want them to tell you. Reality is - you are perfectly safe. Use it with confidence.

Re: Shelf life of motor oils??? [Re: anotheroldguy] #4595218
12/05/17 03:59 PM
12/05/17 03:59 PM
Joined: Aug 2008
Posts: 21,312
ON, Canada eh?
StevieC Offline
StevieC  Offline
Joined: Aug 2008
Posts: 21,312
ON, Canada eh?
welcome to BITOG!

Go ahead and use it. It's fine.


'18 Dodge Grand Caravan GT - AMSOIL SS 5w20
'06 Santa Fe - 535,000km AMSOIL SS 0w30 / ATF
Re: Shelf life of motor oils??? [Re: anotheroldguy] #4595225
12/05/17 04:05 PM
12/05/17 04:05 PM
Joined: Mar 2017
Posts: 6,525
...
PimTac Offline
PimTac  Offline
Joined: Mar 2017
Posts: 6,525
...
GIve it a good shake before opening. What is your “Pride and Joy”?


Cannot see signatures any longer so it doesn’t matter.
Re: Shelf life of motor oils??? [Re: anotheroldguy] #4595231
12/05/17 04:10 PM
12/05/17 04:10 PM
Joined: Sep 2010
Posts: 7,485
S California
OneEyeJack Offline
OneEyeJack  Offline
Joined: Sep 2010
Posts: 7,485
S California
You might want to be aware of the oil spec. And older spec oil would not be appropriate for some modern engines.

In a worst case, there's always the lawn mower. The oil won't go bad just sitting there and as PimTac suggested, give it a good shake.

Re: Shelf life of motor oils??? [Re: anotheroldguy] #4595238
12/05/17 04:25 PM
12/05/17 04:25 PM
Joined: Oct 2009
Posts: 3,524
Wet side WA
JohnnyJohnson Offline
JohnnyJohnson  Offline
Joined: Oct 2009
Posts: 3,524
Wet side WA
Shelf life is likely longer than you're going to live!


2004 Corolla 126813
Out: VML 5w-30 TG4967 OCI 5007 Miles
In: EDGE EP 5W-30 Bosch 3311 122537 7-18-18
2006 Duramax 74478
Out: T6 5W-40 M1-303
In: T6 5W-40 XG9100 73705 4-22-18
Re: Shelf life of motor oils??? [Re: anotheroldguy] #4595243
12/05/17 04:39 PM
12/05/17 04:39 PM
Joined: Mar 2009
Posts: 1,599
Regina, Saskatchewan
sir1900 Offline
sir1900  Offline
Joined: Mar 2009
Posts: 1,599
Regina, Saskatchewan
Assuming it meets your vehicle's specs, then yes, go ahead and use it.

Welcome to BITOG. I think you'll like it here.


2015 Infiniti Q50
VAS 5W-30 + FRAM PH6607

2015 Nissan Murano
Mobil1 AFE 0W-20 + FRAM XG6607
Re: Shelf life of motor oils??? [Re: anotheroldguy] #4595244
12/05/17 04:43 PM
12/05/17 04:43 PM
Joined: Jun 2003
Posts: 17,830
Deplorable in apple valley, ca
Chris142 Offline
Chris142  Offline
Joined: Jun 2003
Posts: 17,830
Deplorable in apple valley, ca
Look at how long oils sit and are used in the car. I am sure that there are 50s and 60s cars that still have their original oils in the axles and trans etc... a few years sitting on your shelf isnt anything.


02 Wrangler carlube 5w30
87 F250 traveler 15w40
07 fjcruiser Chevron 10w30
Z400 castrol T 10w40
Can am maveric edge 5w40
57 case tractor 15w40
Re: Shelf life of motor oils??? [Re: anotheroldguy] #4595262
12/05/17 05:15 PM
12/05/17 05:15 PM
Joined: Jul 2013
Posts: 2,286
Outer Banks, NC
NormanBuntz Offline
NormanBuntz  Offline
Joined: Jul 2013
Posts: 2,286
Outer Banks, NC
Any Pennzoil employee telling you that its synthetic oil has a four year shelf life is a nitwit. Make sure it has the right API rating for your vehicle, and give it a good shake before pouring.


2017 Honda Odyssey SE, 17K
2013 Honda Accord LX, 58K
2007 Honda Ridgeline RTS, 89K
2007 Infiniti M35, 107K
Re: Shelf life of motor oils??? [Re: anotheroldguy] #4595263
12/05/17 05:17 PM
12/05/17 05:17 PM
Joined: May 2013
Posts: 681
Florida
SilverSnake Offline
SilverSnake  Offline
Joined: May 2013
Posts: 681
Florida
There are many BITOG members who will tell you to use oil in sealed containers regardless of age. They tend not to believe anything the oil companies say. Everything the oil companies say or do is a conspiracy to sell you more oil. The same members will also tell you that getting the maximum number of miles or the most time out of an oil change is paramount. They would have you spend all your oil change money on UOAs to prove that old oil is still good. Some of these members will also tell you that 50 year oil in the crankcase of a barn find is perfectly good. IMO if you care about your vehicle, give the old oil to one of the members I mentioned above and buy some new oil for your car.

Last edited by SilverSnake; 12/05/17 05:18 PM.

2016 Charger, 6.4L-485 HP (PUP 0W-40)
2017 BMW 330i, 2L-248 HP (BMW 0W-20)
2018 Jeep GC, 5.7L-360 HP (PP 5W-20)
2008 20KW Generac (Amsoil 10W-30/30)
Re: Shelf life of motor oils??? [Re: anotheroldguy] #4595276
12/05/17 05:34 PM
12/05/17 05:34 PM
Joined: Oct 2010
Posts: 5,412
Florida
Artem Offline
Artem  Offline
Joined: Oct 2010
Posts: 5,412
Florida
Send a sample for analysis, just for kicks and giggles.

If it was a beater, I wouldn't hesitate. But for a "pride and joy" automobile... I'd buy new Lube.


2014 Mazda 3 Hatch 2.0L & 6spd - Idemitsu 0w20 Synthetic @ $0.75 a quart. (thanks Advance Auto Parts for the awesome deal)
Re: Shelf life of motor oils??? [Re: anotheroldguy] #4595293
12/05/17 05:50 PM
12/05/17 05:50 PM
Joined: Feb 2009
Posts: 229
Pennsylvania
K23Turbo Offline
K23Turbo  Offline
Joined: Feb 2009
Posts: 229
Pennsylvania
Use every last drop of your old stock. Mix away.

Re: Shelf life of motor oils??? [Re: anotheroldguy] #4595295
12/05/17 05:51 PM
12/05/17 05:51 PM
Joined: Aug 2004
Posts: 4,819
Katy, Republic of Texas
blupupher Offline
blupupher  Offline
Joined: Aug 2004
Posts: 4,819
Katy, Republic of Texas
Sealed bottle stored inside (not exposed to severe temp extreme cycles), I would use it so long as it met the vehicle spec.

Last year I had some Pennzoil Platinum (Pre GTL) made in 2009 that I used in my car. I had no worries about using it.
No, I did not do a VOA or UOA on it. I had no question about it.
I have a stash of oil that will be almost as old or older when I finally use it, not concerned one bit.

I remember some place did some VOA and UOA on oil that had been sitting on the shelf for 30 years and it was fine.
I think Valvoline says a 5 year shelf life.

It is a sue happy world, and they are only covering their rear ends.


2018 Hyundai Santa Fe: Dealer oil and filter/5k
2012 Scion xB: QSUD 0w-20, CQ Blue, 5k
2002 Ford F150: GTX HM 5w-20, EcoGard, 1yr
1994 Honda VT1100c: Peak 15w-40, PSL, 5k




Re: Shelf life of motor oils??? [Re: blupupher] #4595331
12/05/17 06:33 PM
12/05/17 06:33 PM
Joined: Feb 2014
Posts: 1,787
Texas
Dallas69 Offline
Dallas69  Offline
Joined: Feb 2014
Posts: 1,787
Texas
The worst that can happen is additives may settle to the bottom which is why we shake the bottles.
Shake and pour baby.


2009 Galant-ultra oil and filter
1987 Ford F-150 302
Smittys 5-30
Motorcraft filter
Re: Shelf life of motor oils??? [Re: anotheroldguy] #4595336
12/05/17 06:37 PM
12/05/17 06:37 PM
Joined: Nov 2017
Posts: 45
Richmond VA, Washington DC
johnchui1984 Offline
johnchui1984  Offline
Joined: Nov 2017
Posts: 45
Richmond VA, Washington DC
I think if the seal is not broken, the oil is ok to use. Just shake the oil before pouring it into your engine smile


2016 Nissan Versa S-Plus CVT
Castrol Magnatec + Fram Ultra
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