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frontpagemg3 posted Apr 06, 2026 10:31 AM
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Item 1 of 2
frontpagemg3 posted Apr 06, 2026 10:31 AM

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

+ Free S&H

$54 each

$70

Costco Wholesale
294 Comments 85,445 Views
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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 mg3 for sharing this deal.

Note: Non-Members may purchase but are subject to a 5% surcharge

Available:

Editor's Notes

Written by qwikwit | Staff
  • The sale is valid 4/6/26 through 5/3/26. While supplies last. Limit 5 per member.
  • This offer matches the previous and popular Frontpage Deal from August 2025, which received +203 community votes.
  • If you don't have a Costco Warehouse Membership, you can sign-up here

Original Post

Written by mg3
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 mg3 for sharing this deal.

Note: Non-Members may purchase but are subject to a 5% surcharge

Available:

Editor's Notes

Written by qwikwit | Staff
  • The sale is valid 4/6/26 through 5/3/26. While supplies last. Limit 5 per member.
  • This offer matches the previous and popular Frontpage Deal from August 2025, which received +203 community votes.
  • If you don't have a Costco Warehouse Membership, you can sign-up here

Original Post

Written by mg3

Community Voting

Deal Score
+304
Good Deal
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Top Comments

hmrambling
3593 Posts
2593 Reputation
Click on the warehouse on the bottom of your app. Then click that you want to shop your warehouse.

I'm able to easily see that my warehouse doesn't carry most weights and that I'd need to order it online.
mg3
535 Posts
346 Reputation
It's warren oil, the same people who make supertech. I'm thinking if you are changing every 5000 miles (especially given that it's so cheap to do so with this), it'll be no issues. But obviously, ymmv
Janerl
571 Posts
513 Reputation
Interestingly, from I can see, it's $30 for 2x 5qt in-store so online is actually cheaper. I really like that the Costco app lets you check in-store inventory and prices now.

294 Comments

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Apr 06, 2026 02:10 PM
62 Posts
Joined Sep 2021
NavyCatfish8868Apr 06, 2026 02:10 PM
62 Posts
wow this is crazy deal, time to get some
Apr 06, 2026 02:18 PM
3,358 Posts
Joined Jan 2007
windnsalsaApr 06, 2026 02:18 PM
3,358 Posts
Do these have expiration / best use by date? If not, what's the general shelf life?
Apr 06, 2026 02:19 PM
253 Posts
Joined Apr 2020
jAyJr1105Apr 06, 2026 02:19 PM
253 Posts
My costco membership expired but seems I can still order with a 5% surcharge, not bad.
Apr 06, 2026 02:22 PM
45 Posts
Joined Aug 2011
iamyourdemizeApr 06, 2026 02:22 PM
45 Posts
Anyone else not able to add to cart?
Apr 06, 2026 02:22 PM
39,419 Posts
Joined Nov 2005
Dr. JApr 06, 2026 02:22 PM
39,419 Posts
My club is charging $30 for a 2 pack. Worthwhile checking in club before pulling the online trigger because it *has* been cheaper in club in the past.
1
Apr 06, 2026 02:23 PM
39,419 Posts
Joined Nov 2005
Dr. JApr 06, 2026 02:23 PM
39,419 Posts
Quote from windnsalsa :
Do these have expiration / best use by date? If not, what's the general shelf life?
There isn't a hard and fast number here but it's on the order of years if left sealed and not stored baking in the heat.
Apr 06, 2026 02:24 PM
39,419 Posts
Joined Nov 2005
Dr. JApr 06, 2026 02:24 PM
39,419 Posts
Quote from Hat-Trick :
Oddly, I'm in San Diego area with lots of Costco's and none of the ones I checked with the app show ANY results for "motor oil". I wonder if they blocked results or the warehouses really stopped carrying motor oil (doubtful)?
Search for "synthetic". Costco's app searching isn't great.

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Apr 06, 2026 02:25 PM
3,608 Posts
Joined Dec 2008
clinteastwoodApr 06, 2026 02:25 PM
3,608 Posts
Quote from DealHunterNYC212 :
Thank you!!!! How long does an unopened bottle last? (Sorry I'm new to home ownership)
Maybe a million or so years give or take.

Also, people are posting about oil prices being high, I've never really noticed a significant price difference in motor oil when crude was expensive. I don't think it necessarily correlates.
Last edited by clinteastwood April 6, 2026 at 07:29 AM.
1
Apr 06, 2026 02:26 PM
268 Posts
Joined May 2021
pmzo33Apr 06, 2026 02:26 PM
268 Posts
It's even cheaper online than in the store. Great deal. Definitely in for one.
Apr 06, 2026 02:26 PM
1,587 Posts
Joined Sep 2011
SoukaApr 06, 2026 02:26 PM
1,587 Posts
Good oil, has been reviewed many times by various YT'ers and actual studies.

If you're on SD, this oil is PLENTY GOOD ENOUGH for you.

$53.99 4x 5qt bottles Online price with free shipping
$29.99 2x 5qt bottles In-store price

So yes cheaper if ordered online, but you'll nee to get 4x 5qt bottles.

If stored properly (room temp) unopened bottles will last for 5-8 years.
But in a garage like mine that gets down to 30F during winter, 120F during summer (typical is more like 50-100 min/max)... I wouldn't go past a year/

I have three cars getting about 10k/yr each, so I'll go through this no problem in under 2yrs... in for 8 bottles
Last edited by Souka April 6, 2026 at 07:35 AM.
1
Apr 06, 2026 02:36 PM
60 Posts
Joined Dec 2007
gshoqApr 06, 2026 02:36 PM
60 Posts
Getting rid of ILSAC GF-6A inventory?
1
1
Apr 06, 2026 02:43 PM
842 Posts
Joined Apr 2008
c3688tApr 06, 2026 02:43 PM
842 Posts
Quote from Hat-Trick :
Oddly, I'm in San Diego area with lots of Costco's and none of the ones I checked with the app show ANY results for "motor oil". I wonder if they blocked results or the warehouses really stopped carrying motor oil (doubtful)?
Several years ago my friend who lives in San Diego said that it was illegal to change your own oil in the city because too many people were pouring the used oil down the drains. Don't know if that's still true today, or if he made it up back then. Your comment made me think of it, LOL.
Last edited by c3688t April 6, 2026 at 07:47 AM.
Apr 06, 2026 02:47 PM
1,268 Posts
Joined Apr 2012
kozgApr 06, 2026 02:47 PM
1,268 Posts
Quote from windnsalsa :
Do these have expiration / best use by date? If not, what's the general shelf life?
The consensus seems to be 5 years. Oil is fine but the additives may start to break down.
2
Apr 06, 2026 02:48 PM
35 Posts
Joined Feb 2019
Eugenius11Apr 06, 2026 02:48 PM
35 Posts
Most manufacturers say 5 years of shelf life under normal conditions (cool and dry)

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Apr 06, 2026 02:55 PM
1,085 Posts
Joined Oct 2005
Irons82Apr 06, 2026 02:55 PM
1,085 Posts

Our community has rated this post as helpful. If you agree, why not thank Irons82

Quote from j4j :
my 2025 Sienna oil are extremely black after 5k, even though Its recommended 10k, so I did it myself anyway every 5k.
Color of the oil is not a reliable indicator of wear. It'll look black after 1000 miles. The only way to know for sure is to send a sample to the lab. Chances are, if you use full synthetic oil, it's fine for 10-15K miles.
2

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