See, if you buy a jug of milk that is good for one month, it's not like the milk will wait for one month and then suddenly go bad. It goes bad gradually. Is oil like that too? They say that oil is good for up to 4 years, but it's not like the oil will wait for 4 years and then suddenly go bad. Shouldn't we buy fresh oil from Walmart each time we change our oil? Pennzoil jugs at Walmart right now say June 2025 on the jug. In a couple of months it will probably say August 2025. Walmart sells so much oil, jugs vanish.
Is it not a good idea to buy freshly blended oil?
- Thread starter Javed
- Start date
Not sure but if you send your "too old" oil to me I will make sure it goes to the right place.
There is nothing wrong with buying freshly blended oil 
Does the bottle feel warm?
Does the bottle feel warm?
Patman
Staff member
If that was the case then I should be very worried because the ESP Formula 5w-30 in my Corvette right now was produced back in 2018. I’m not concerned at all though.
Next you are gonna tell me to check the "born on date" on oil like with Budweiser.
I don't believe this is a legit question. Belongs in the humor section. 
I swear Pennzoil says 5 years of Shelf Life.I don't believe this is a legit question. Belongs in the humor section.
Possibly the container is only good for 5 years. Or maybe the shelf
unfortunately I don’t use “fresh” oil. My stash (mostly Magatec and Pennzoil Ultra platinum and Platinum) is 4-8 years “fresh”. I also don’t drive a new DI cars. Oil lasts a long time. If I buy something newer I’ll have to replenish.
I don't know that the milk comparison is really a good one.
Milk reaches a point where it definitely goes bad. I know only a few insane individuals that will drink milk after it has started to curdle, and most of us have a point well before that, that we won't drink it. It seems that the change, from fresh to spoiled, is on a curve. IDK for sure. Perhaps we have someone here that does?
Motor oil on the other hand, really has no expiration date. Except for the inconvenience of fallout of additives, I don't know of any real disadvantage of using 4 or 5 year old motor oil. I haven't seen anyone here report that they had to replace rod bearings after using old motor oil. I vaguely recall Blackstone Labs running some testing on some very old motor oil, and even ran it in some older engines, for which the oil was spec'd for, with no bad consequences.
This isn't the article I'm thinking of, but here is one where Blackstone tested some 14 year old M1, and found it still meeting specs.
https://www.thedrive.com/news/motor-oil-age-doesnt-matter-as-much-as-mileage-study.
Is it good to be using 15 year old motor oil? Perhaps it might be wise to not do any extended runs with it, but from what we read, it will still work. Is motor oil that just hit the shelf going to protect an engine any better than some that has been in a stash for 3 or 4 years? Nothing we have seen here shows anything to support that theory.
Milk reaches a point where it definitely goes bad. I know only a few insane individuals that will drink milk after it has started to curdle, and most of us have a point well before that, that we won't drink it. It seems that the change, from fresh to spoiled, is on a curve. IDK for sure. Perhaps we have someone here that does?
Motor oil on the other hand, really has no expiration date. Except for the inconvenience of fallout of additives, I don't know of any real disadvantage of using 4 or 5 year old motor oil. I haven't seen anyone here report that they had to replace rod bearings after using old motor oil. I vaguely recall Blackstone Labs running some testing on some very old motor oil, and even ran it in some older engines, for which the oil was spec'd for, with no bad consequences.
This isn't the article I'm thinking of, but here is one where Blackstone tested some 14 year old M1, and found it still meeting specs.
https://www.thedrive.com/news/motor-oil-age-doesnt-matter-as-much-as-mileage-study.
Is it good to be using 15 year old motor oil? Perhaps it might be wise to not do any extended runs with it, but from what we read, it will still work. Is motor oil that just hit the shelf going to protect an engine any better than some that has been in a stash for 3 or 4 years? Nothing we have seen here shows anything to support that theory.
I’m not a fan of fresh oil. I like it aged quite a bit. Like some gray hair, couple kids, and stretch marks kinda aged you know.
When I open my oil bottles you can still hear the dinosaurs screaming it’s so fresh.
I always let my oil at sit at least a year in a glass bottle so it mellows with age, like my Macallan.
There's always a reason.The funniest comment in this thread is no more for some reason, the one that said that trucks rushing to deliver fresh Pennzoil and Mobil 1 early a.m. everyday
SammyChevelleTypeS3
$50 site donor 2023
NOW, that is funny!Possibly the container is only good for 5 years. Or maybe the shelf
I don't care who you are.
As The Cable Guy Larry would say! LoL.
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