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expiredmg3 posted Apr 6, 2026 10:31 AM

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

$54 each

$70

+ Free S&Hat Costco Wholesale
294 Comments
91.2K 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
+306
Good Deal
Visit Retailer

Top Comments

hmrambling
3597 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
542 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.

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294 Comments

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Apr 6, 2026 12:27 PM
201 Posts
Joined Nov 2015

This comment has been rated as unhelpful by Slickdeals users.

Apr 6, 2026 12:34 PM
2,146 Posts
Joined Feb 2006
fthnm2005Apr 6, 2026 12:34 PM
2,146 Posts
I wonder if in store is even cheaper?
Pro
Apr 6, 2026 12:34 PM
7,575 Posts
Joined Jan 2005
energyx
Pro
Apr 6, 2026 12:34 PM
7,575 Posts
Nice! In 4 1, maybe 2 at this price.
Apr 6, 2026 12:37 PM
3,454 Posts
Joined Feb 2010
balla123Apr 6, 2026 12:37 PM
3,454 Posts
same price in store?
Apr 6, 2026 12:37 PM
571 Posts
Joined May 2007
JanerlApr 6, 2026 12:37 PM
571 Posts

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

Quote from fthnm2005 :
I wonder if in store is even cheaper?
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.
2
Apr 6, 2026 12:41 PM
160 Posts
Joined Dec 2004
barhoc11Apr 6, 2026 12:41 PM
160 Posts
I don't see how you can get this quality for cheaper. Seems like a no brainer to stock up on.
Apr 6, 2026 12:44 PM
101 Posts
Joined Dec 2014
highfrescoApr 6, 2026 12:44 PM
101 Posts
Quote from barhoc11 :
I don't see how you can get this quality for cheaper. Seems like a no brainer to stock up on.
This is the best deal that comes around all the time, but sometimes there are rebates or clearance

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Apr 6, 2026 12:56 PM
4 Posts
Joined Apr 2019
ErnieIApr 6, 2026 12:56 PM
4 Posts
Quote from Janerl :
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.
How do you do that? I didn't see the option in the app.
Apr 6, 2026 12:57 PM
11,098 Posts
Joined Sep 2014
ash78Apr 6, 2026 12:57 PM
11,098 Posts
Any idea who makes this? I'm on the fence about oil from Kirkland and Supertech, even though the anecdotes are positive. It takes years and years for the value of good (or bad) oil to really show up.
2
Apr 6, 2026 12:58 PM
2,688 Posts
Joined Oct 2008

This comment has been rated as unhelpful by Slickdeals users.

Original Poster
Pro
Apr 6, 2026 12:59 PM
542 Posts
Joined Feb 2015
mg3
Original Poster
Pro
Apr 6, 2026 12:59 PM
542 Posts

Our community has rated this post as helpful. If you agree, why not thank mg3

Quote from ash78 :
Any idea who makes this? I'm on the fence about oil from Kirkland and Supertech, even though the anecdotes are positive. It takes years and years for the value of good (or bad) oil to really show up.
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
1
2
Apr 6, 2026 1:05 PM
652 Posts
Joined Jul 2011
nickmvApr 6, 2026 1:05 PM
652 Posts
Quote from mg3 :
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
It carries all the ratings that modern oils that perform beyond 5k carry. I see no reason to treat it any differently than standard intervals your vehicle mfr uses, whether that's computer-calculated or the old-school every-Xk miles.
Original Poster
Pro
Apr 6, 2026 1:13 PM
542 Posts
Joined Feb 2015
mg3
Original Poster
Pro
Apr 6, 2026 1:13 PM
542 Posts
Quote from nickmv :
It carries all the ratings that modern oils that perform beyond 5k carry. I see no reason to treat it any differently than standard intervals your vehicle mfr uses, whether that's computer-calculated or the old-school every-Xk miles.
You are correct, it does carry all the same ratings as the other oils. As far a oil change timing, I just prefer a 5k oil change vs waiting for the system to tell me. Not saying that's the best way and many people are fine waiting, just my personal preference. I was always taught it's cheaper to change oil (especially diy) than replace an engine and 5k seems to be a good spot for me. The little extra piece of mind for me is worth it given that I tend to keep vehicles until they stop working.
Apr 6, 2026 1:20 PM
391 Posts
Joined Sep 2007
ChiphumperApr 6, 2026 1:20 PM
391 Posts
In for two sets to cover my old GM (5w-30) and newer FCA (0W-20) family fleet. Comes out to $3/qt delivered with tax. Rare to see a "deal" like this. Last time I bought oil en masse like this was via SD for Amazon Basics. Got like eight gallons. The BEST SD ever was when Grainger (b&m only) put those six-gallon boxes on sale for like $55/ea or something ridiculous like that about five years ago. I'm just now using the last last of it.
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Apr 6, 2026 1:22 PM
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hmramblingApr 6, 2026 1:22 PM
3,597 Posts

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

Quote from ErnieI :
How do you do that? I didn't see the option in the app.
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.
4

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