View Full Version : Shelf life of oil

07-01-2007, 09:48 PM
Because of the change in the formulation of diesel rated oils, I've been buying up all the CI rated 15W-40 Castrol diesel oil I can find here on MD's Eastern Shore. I now have 18 gallons of the stuff and planned to get more. But last night I read in the BlackHawk chapter's newsletter an article about oil that said "you can only store oils for about 2 years before their performance becomes suspect". True? If so, why? Is it the additives? Seems like oil should last a long time if the container isn't open. After all, it's been in the ground for millions of years. Any ideas on how long it can be stored? I'm hoping for 5-10 years.

07-01-2007, 10:26 PM
Google is your friend:


66 Sports sedan
64 Daytona HT/R2 clone
64 Daytona R2
63 GT R2
63 Lark 2 door
62 Gt Hawk
62 Lark 2 door
60 Lark HT-60Hawk
59 3E truck
58 Starlight
52 & 53 Starliner
51 Commander

07-01-2007, 10:41 PM
Thank you JDP. Something I did not know.Always thought if you did not break the seal it would be good.

63 Twin Supercharged Avanti
64 Avanti R3w/NOS
88LSC Avanti 350 Supercharged w/NOS

07-01-2007, 11:12 PM
I guess the oil in the Tulsa Plymouth wouldn't be good! :D

Leonard Shepherd


vegas paul
07-02-2007, 10:11 AM
Any way to tell how long it has been "shelved" before I buy it? Is there a mfg. date on the container - I've never looked for one. WalMart has a lot of CI-4 oil along side the same brand CJ-4.. I wonder if they're purchasing both at the same time, or is the CI older already?

Las Vegas, NV
'51 Champion Business Coupe G899965 10G-Q4-1434
http://i151.photobucket.com/albums/s144/vegas_paul/1462673_2_350.jpg?t=1180041622 http://i151.photobucket.com/albums/s144/vegas_paul/graciestude.jpg?t=1180041703

Mike Van Veghten
07-02-2007, 10:25 AM
Don't worry about it...the sky isn't falling, at least for the forseable future!
Just include a good additive like GM's EOS or the additive from Lucas Oil each oil change and all will be well.


07-02-2007, 10:33 AM
I have garnered the last remaining qt's and gallons from the
2 wally mart stores in the Prescott, AZ area....mostly DELO
and the "Motorcraft" version by F@*d all CI 4/Plus Formula.
So I am set for a while...

1964 Daytona
glen Brose
Tumbleweed Flats, AZ

07-02-2007, 11:29 AM
I would think that some enterprising oil company would target the older car market with a taylored additive package. While it may not sell to the extent that common blends would, I think it would do reasonably well with the right advertising.

Tom - Valrico, FL

1964 Studebaker Daytona - 289 4V, 4-Speed


07-02-2007, 01:56 PM
I suggest you contact Lubes'n'Greases magazine. They are a trade journal. I think this way you will get a professional opinion and not "hear say"
Contact them with your question www.lngpublishing.com

07-02-2007, 02:03 PM
Paul; the CI-4 is the good stuff, they are closing it out, my store already has. So I wish I had bought it all! ...You still could! [^]

quote:Originally posted by vegas paul

WalMart has a lot of CI-4 oil along side the same brand CJ-4.. I wonder if they're purchasing both at the same time, or is the CI older already?

Studebakers Northwest
Ferndale, WA

07-03-2007, 06:47 PM
Just talked to an Oil Distributor in Duluth, MN this morning and asked if they had any of the older formulation left. He said in the packaged goods everything has been turned over - but in bulk - they are not yet seeing any of the new product. Specifically, we were talking about Shell Rotella T 15W40. So if you have the capability of handling bulk, he indicated that it should remain available for some time.

55 Commander
58 Transtar
62 GT Hawk
66 Cruiser

07-04-2007, 03:35 AM

63 Twin Supercharged Avanti
64 Avanti R3w/NOS
88LSC Avanti 350 Supercharged w/NOS

07-04-2007, 04:04 PM
quote:Originally posted by hotwheels63r2

Its a shame the poor Stude engines only go 100k miles with the wrong oil. Just grin and roll along with me.

Since the "wrong oil" has only been since the additive package was changed a few months ago, I don't see how anyone can have 100K miles of experience with it in a Studebaker engine. I was up to 65K miles per year in the mid-'90s, but 100K in a half year is extreme.

Gary L.
Wappinger, NY

1959 DeLuxe pickup (restomod)