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HappyPixel 133K Views
Apr 9, 2025 10:45 AM

Costco Members: 4-Pk 5-Qt Kirkland Signature Full Synthetic Motor Oil (various)

$54 each

$70

+ Free Shippingat Costco Wholesale
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Deal Details
Costco Wholesale has for its Members: 4-Pack 5-Quart Kirkland Signature Full Synthetic Motor Oil (various) for $53.99 each. Shipping is free.

Thanks to community member HappyPixel for sharing this deal.

Available:

Editor's Notes

Written by citan359 | Staff
  • This offer is $10 less than the previous +79 Frontpage Deal from September 2024.
  • Please see the original post for additional details & give the WIKI and additional forum comments a read for helpful discussion.
  • If you don't have a Costco Warehouse Membership, you can sign-up here

Original Post

Written by HappyPixel
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Costco Wholesale has for its Members: 4-Pack 5-Quart Kirkland Signature Full Synthetic Motor Oil (various) for $53.99 each. Shipping is free.

Thanks to community member HappyPixel for sharing this deal.

Available:

Editor's Notes

Written by citan359 | Staff
  • This offer is $10 less than the previous +79 Frontpage Deal from September 2024.
  • Please see the original post for additional details & give the WIKI and additional forum comments a read for helpful discussion.
  • If you don't have a Costco Warehouse Membership, you can sign-up here

Original Post

Written by HappyPixel

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324 Comments

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Apr 9, 2025 1:24 PM
4.2K Comments
Joined Oct 2004
mrstangblbApr 9, 2025 1:24 PM
4.2K Comments
Quote from sdsnake View quoted comment :
That's more expensive than buying this 4-pk 5-qt for $54
Not much more, and it's $20 less than having 4 jugs in my garage taking up space.
5
Apr 9, 2025 1:25 PM
3.5K Comments
Joined Nov 2012
Hogan773Apr 9, 2025 1:25 PM
3.5K Comments
Quote from hollowpockets View quoted comment :
Ok.. well go get the engine number and Google it.

Thos is car oil. Small engine oil is typically different. You bought a honda engine, put the right oil in it.

and if you're a new homeowner.. my suggestion is to keep those books. you'll refer to them over time
Also there is this app called Google where you can find online versions of manuals
1
4
Apr 9, 2025 1:29 PM
2.5K Comments
Joined Nov 2007
hollowpocketsApr 9, 2025 1:29 PM
2.5K Comments
Quote from JackBurton View quoted comment :
Bought 4 cases last sale and still have one due to one of our vehicles totaled. New replacement takes 0w-16, wish Costco sold it.
Ow-16?
What car?
It's all about those mpgs now I guess
1
Apr 9, 2025 1:31 PM
484 Comments
Joined Apr 2013
bxd20Apr 9, 2025 1:31 PM
484 Comments

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Quote from Marlin1975 View quoted comment :
As long as its sealed then yea no problem. If its open just put in a plastic bag to keep moisture out.
Oil is not hygroscopic like brake fluid. As long as the cap is on tight it's not picking up moisture. And even if it did somehow pickup a few drops of water, the first time you drive the car it will be gone.

VOA tests at BITOG reveal that stored oil doesn't really have a shelf life.

Mobil at one point claimed 7 years, but that was a number to cover themselves, and testing shows it's much longer. The problem is the oil goes out of spec for new cars at some point, rather than actually going "bad".

What I would suggest for long term storage is that you shake the bottle right before you pour it in. It's possible that additive settling can occur.
1
Apr 9, 2025 1:31 PM
3.5K Comments
Joined Nov 2012
Hogan773Apr 9, 2025 1:31 PM
3.5K Comments
Must ....resist....temptation to buy more oil. But this is a great price without any rebate hassles. Only thing better are the random true Slickdeals like AutoZone clearance sales for $1 per quart or Walmart price mistakes where you end up getting 2 jugs for free haha
Apr 9, 2025 1:33 PM
3.5K Comments
Joined Nov 2012
Hogan773Apr 9, 2025 1:33 PM
3.5K Comments
Quote from bxd20 View quoted comment :
Oil is not hygroscopic like brake fluid. As long as the cap is on tight it's not picking up moisture. And even if it did somehow pickup a few drops of water, the first time you drive the car it will be gone.

VOA tests at BITOG reveal that stored oil doesn't really have a shelf life.

Mobil at one point claimed 7 years, but that was a number to cover themselves, and testing shows it's much longer. The problem is the oil goes out of spec for new cars at some point, rather than actually going "bad".

What I would suggest for long term storage is that you shake the bottle right before you pour it in. It's possible that additive settling can occur.
Yeah I always laugh at these questions....oil was in the ground for millions of years so it's not going to "spoil" in 5 years
5
Apr 9, 2025 1:40 PM
472 Comments
Joined Jul 2017
NothingworkedApr 9, 2025 1:40 PM
472 Comments

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Quote from vuiskool View quoted comment :
Pro tip: every known brand manual is found online in PDF format. So you can toss those paper book manuals.
This is good advice until your hands are covered in filth, you have poor coverage and you just want to know the answer quickly. My garage is a cell and wifi black hole.

Find the manuals and print them out.

Or level up - find all the important details and type yourself up a cheat sheet. Have multiple copies laminated and put them all over your shop.

I have all the part numbers for replacement blades, replacement wheels, replacement carburetors, spark plugs, air filters, oil filters, oil type and what sockets/tools are needed.

I had it on my phone, in a "OneNote" but I'd rather print another cheat sheet than replace another phone, or deal with having to walk outside the garage every time to load it up.
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Apr 9, 2025 1:45 PM
490 Comments
Joined Mar 2016
BorfnooApr 9, 2025 1:45 PM
490 Comments
Quote from patrocle View quoted comment :
Who does this costco oil? rebranded from where? I normally use the Penzoil 5w-20 Ultra full synthetic for Ram Truck
Project Farm did a YouTube video testing Costco oil and found it performed well.
Apr 9, 2025 1:46 PM
33 Comments
Joined Feb 2015
KromodusApr 9, 2025 1:46 PM
33 Comments
Does the oil need to be purchased online for this deal? Or can I walk in to my club and find the same deal?
Apr 9, 2025 1:52 PM
17K Comments
Joined Jan 2004
chong67Apr 9, 2025 1:52 PM
17K Comments
Who makes these for Costso?
4
Apr 9, 2025 1:55 PM
2.9K Comments
Joined Dec 2008
Marlin1975Apr 9, 2025 1:55 PM
2.9K Comments
Quote from Kromodus View quoted comment :
Does the oil need to be purchased online for this deal? Or can I walk in to my club and find the same deal?

You can buy in store but for some reason its cheaper online this time.
1
Apr 9, 2025 2:02 PM
1.7K Comments
Joined Oct 2007
JackBurtonApr 9, 2025 2:02 PM
1.7K Comments
Quote from hollowpockets View quoted comment :
Ow-16?
What car?
It's all about those mpgs now I guess
Both my wife's 2024 Camry and daughter's 2023 Rav 4 takes 0W-16. My 2021 Tacoma takes the 0w-20. Had a case of 5W-20 from another Kirkland oil sale my old 2007 Taco used I'm switching in between changes on my new Taco.
Apr 9, 2025 2:03 PM
167 Comments
Joined May 2020
ArtewaApr 9, 2025 2:03 PM
167 Comments

Our community has rated this post as helpful. If you agree, why not thank

Quote from Hogan773 View quoted comment :
Yeah I always laugh at these questions....oil was in the ground for millions of years so it's not going to "spoil" in 5 years
Oil is not going to "spoil" but additives in motor oil can lose their effectivness over time. It could be the reason "ExxonMobil recommends a five-year maximum shelf life for engine oils, including Mobil 1™ synthetic motor oil." or "Pennzoil recommends a shelf life of up to 4 years for their motor oils when stored properly." I am not an motor oil expert and I am not going to queston their recommendations. One thing for sure I would not use 20 year old motor oil in any of my cars.
2
1
Apr 9, 2025 2:05 PM
7.3K Comments
Joined Jul 2011
08CivicSiApr 9, 2025 2:05 PM
7.3K Comments
Quote from chong67 View quoted comment :
Who makes these for Costso?
Warren I believe

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Apr 9, 2025 2:06 PM
1.1K Comments
Joined Jul 2013
cyberchoApr 9, 2025 2:06 PM
1.1K Comments
Ordered (2). Have 3 Hondas that use 0W-20. 2 of them suffer from oil dilution so I need to make sure I change the oil every 6 months or 5000 miles (whichever comes first).

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