Slickdeals is community-supported.  We may get paid by brands for deals, including promoted items.
Heads up, this deal has expired. Want to create a deal alert for this item?
expiredSaltyOne | Staff posted Today 12:37 AM
  1. Deal Image
Item 1 of 2
  1. Deal Image
  2. Deal Image
Item 1 of 2
expiredSaltyOne | Staff posted Today 12:37 AM

6-Pack 1-Quart Castrol GTX 5W-30 Synthetic Blend Motor Oil

w/ Subscribe & Save

$16

$39

58% off
Amazon
12 Comments 2,776 Views
Visit Amazon
Good Deal
Save
Share
Deal Details
Amazon has 6-Pack 1-Quart Castrol GTX 5W-30 Synthetic Blend Motor Oil for $17.02 - 5% when you check out via Subscribe & Save = $16.17. Shipping is free with Prime or $35+ orders.

Thanks to Deal Editor SaltyOne for finding this deal.

Note, you have the flexibility to manage your Subscribe & Save subscription at any time after your order ships. View Subscribe & Save filler items and our current Subscribe & Save Frontpage deals to unlock up to extra 15% savings when you have 5 or more items in your current monthly subscription.

About this Item:
  • Unique TriShield technology provides superior deposit protection
  • Maximum protection against viscosity and thermal breakdown
  • Ultra-low friction to improve gas mileage
  • Meets Chrysler MS 6395, Ford WSS-M2C929-A, Ford WSS-M2C930-A, GM 6094M standards
  • Exceeds ILSAC GF-5 and API SN standards

Editor's Notes

Written by Corwin | Staff
  • About this Deal:
    • This is a very nice price at roughly ~$2.70 per quart.
    • Our research indicates that this deal is $19.59 less (54.8% savings) than the next best available price from a reputable merchant with prices starting from $35.76 at the time of this posting.
    • While supplies / offer lasts.
    • Please see the original post for additional details and give the WIKI and forum comments a read for helpful discussion.
  • About this Product:
    • Rated 4.8 out of 5 stars overall based on over 2,600 reviews.
  • About this Store:

Original Post

Written by SaltyOne | Staff
Product Info
Community Notes
About the Poster
Deal Details
Product Info
Community Notes
About the Poster
Amazon has 6-Pack 1-Quart Castrol GTX 5W-30 Synthetic Blend Motor Oil for $17.02 - 5% when you check out via Subscribe & Save = $16.17. Shipping is free with Prime or $35+ orders.

Thanks to Deal Editor SaltyOne for finding this deal.

Note, you have the flexibility to manage your Subscribe & Save subscription at any time after your order ships. View Subscribe & Save filler items and our current Subscribe & Save Frontpage deals to unlock up to extra 15% savings when you have 5 or more items in your current monthly subscription.

About this Item:
  • Unique TriShield technology provides superior deposit protection
  • Maximum protection against viscosity and thermal breakdown
  • Ultra-low friction to improve gas mileage
  • Meets Chrysler MS 6395, Ford WSS-M2C929-A, Ford WSS-M2C930-A, GM 6094M standards
  • Exceeds ILSAC GF-5 and API SN standards

Editor's Notes

Written by Corwin | Staff
  • About this Deal:
    • This is a very nice price at roughly ~$2.70 per quart.
    • Our research indicates that this deal is $19.59 less (54.8% savings) than the next best available price from a reputable merchant with prices starting from $35.76 at the time of this posting.
    • While supplies / offer lasts.
    • Please see the original post for additional details and give the WIKI and forum comments a read for helpful discussion.
  • About this Product:
    • Rated 4.8 out of 5 stars overall based on over 2,600 reviews.
  • About this Store:

Original Post

Written by SaltyOne | Staff

Community Voting

Deal Score
+12
Good Deal
Visit Amazon

Price Intelligence

Model: Castrol 6144 GTX ULTRACLEAN 5W-30 Motor Oil, 1 Quart, 6 Pack

Deal History 

Sort: Most Recent
Post Date Sold By Sale Price Activity
03/29/24Amazon$18 popular
5
01/17/22Amazon$25
9

Current Prices

Sort: Lowest to Highest | Last Updated 10/5/2025, 07:06 AM
Sold By Sale Price
Amazon$31.10

Leave a Comment

Unregistered (You)

Top Comments

NeatShop7155
770 Posts
428 Reputation
For sure lol because this is not synthetic oil

11 Comments

Sign up for a Slickdeals account to remove this ad.

Today 01:26 AM
20 Posts
Joined Nov 2017
davidgfcxcToday 01:26 AM
20 Posts
cheaper than Walmart super tech synthetic oil.

good deal!
1
1
Pro
Today 01:28 AM
770 Posts
Joined Jan 2021
NeatShop7155
Pro
Today 01:28 AM
770 Posts

Our community has rated this post as helpful. If you agree, why not thank NeatShop7155

Quote from davidgfcxc :
cheaper than Walmart super tech synthetic oil.

good deal!
For sure lol because this is not synthetic oil
1
1
Today 02:13 AM
86 Posts
Joined Dec 2007
AnaMayShunToday 02:13 AM
86 Posts
Quote from NeatShop7155 :
Quote from davidgfcxc [IMG]http://i.slickdeals.net/images/midnight/misc/backlink.gif[/IMG] :
cheaper than Walmart super tech synthetic oil.

good deal!
For sure lol because this is not synthetic oil
How is this not synthetic?
2
Today 02:20 AM
205 Posts
Joined Jan 2021
BeautifulLake409Today 02:20 AM
205 Posts
Quote from AnaMayShun :
How is this not synthetic?
It's a blend
Today 02:22 AM
751 Posts
Joined Mar 2009
kzat82Today 02:22 AM
751 Posts
Quote from AnaMayShun :
How is this not synthetic?
it's a conventional/synthetic blend. So not a full synthetic.
1
Pro
Today 02:27 AM
1,412 Posts
Joined Feb 2024
Papi-Chino
Pro
Today 02:27 AM
1,412 Posts
Synthetic blend means lil bit of sugar & half/half in your coffee. Full synthetic means your drinking coffee straight up black.
1
1
Today 02:39 AM
15 Posts
Joined Dec 2018
JoshB1304Today 02:39 AM
15 Posts
not seeing the sale price now

Sign up for a Slickdeals account to remove this ad.

Today 02:52 AM
781 Posts
Joined Nov 2013
ThatMeskinODToday 02:52 AM
781 Posts
Deals dead
Today 03:36 AM
21,548 Posts
Joined Nov 2007
Buckeyefan 1Today 03:36 AM
21,548 Posts
Quote from AnaMayShun :
How is this not synthetic?
Don't assume blends are 50%. They can be as little as 15%. Just get the Walmart full syn.
Today 04:53 AM
4,998 Posts
Joined Dec 2009
seanleeforeverToday 04:53 AM
4,998 Posts
Quote from Buckeyefan 1 :
Don't assume blends are 50%. They can be as little as 15%. Just get the Walmart full syn.
that's true for any blend. last time I was buying cooking oil, avocado oil are like 30 dollar a bottle, and the a blend of avocado oil and canola oil is like 15 dollar, then you read the details and it is 10/90 blend. lol
Today 05:11 AM
915 Posts
Joined Feb 2015
ducki3Today 05:11 AM
915 Posts
Quote from AnaMayShun :
How is this not synthetic?
At first I was happy that the discount applied to qty 3 then I realized that it was a blend.

Leave a Comment

Unregistered (You)

Related Searches

AutosMotor OilOccasionsAmazon Prime DayOnline OnlySubscriptionCastrol

Popular Deals

View All
Found by
$20$7071% offThe Nioh Collection PS5 $20 again at Best Buy $19.99
1
Found by
$91$13030% offLEGO Star Wars Wicket the Ewok 75430 $90.99 with Target Circle on 10/5
2
Found by
$70$15053% offBaseus Nomos 140W 5-in-1 Foldable Charging Station w/ Qi2 Certified 15W Wireless Charging & 100W Retractable Cable $69.99 + Free Shipping
1
Found by
$21$3336% offDelta Children Sling Book Rack Bookshelf (Grey/Blue) $20.82 + Free Shipping w/ Prime or on $35+
0
Found by
$580$1,00042% offASUS ZenBook A14: 14" FHD+ OLED, X1P 42 100, 16GB LPDDR5, 512GB SSD $579.99
3

Trending Deals

View All
Found by
$60$26076% offTotal Wireless 2025 Moto G Stylus 5G free with port & ID Verify on any plan $60
27
Found by
$799$99920% offApple MacBook Air: 13", M4, 16GB RAM, 256GB SSD $799
1
Found by
$118$14015% off71.7" Ebern Designs Modern Minimalist TV Stand w/ Hidden Storage (Dark Walnut) $117.99 + Free Shipping
0
Found by
$12$3868% off[Regional/MidAtlantic] $12.08: Classic Accessories Veranda Water-Resistant 59 Inch BBQ Grill Cover for the Weber Genesis at Amazon
8
Found by
$900$1,10018% offLenovo Legion 5: 15.3" FHD+ 165Hz, Ryzen 7 260, RTX 5060, 16GB DDR5, 512GB SSD $899.99
1