Slickdeals is community-supported. We may get paid by brands for deals, including promoted items.

frontpagepennysave posted Jun 13, 2026 02:49 PM

Item 1 of 4

frontpagepennysave posted Jun 13, 2026 02:49 PM

5-qt Castrol GTX High Mileage Synthetic Blend Motor Oil (10W-30)

w/ S&S

$14

$24

41% off

Amazon

6 Comments

4,064 Views

Get Deal at Amazon

Good Deal

Bad Deal

Save

Amazon has 5-qt Castrol GTX High Mileage Synthetic Blend Motor Oil (10W-30) on sale for $14.95 - $0.75 (5% Subscribe & Save discount) = $14.20. Shipping is free with Prime or on $35+ orders.

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.

Thanks to Community Member pennysave for sharing this deal.

Alternatively, Select Advance Auto Parts Stores also has 5-qt Castrol GTX High Mileage Synthetic Blend Motor Oil (10W-30) on sale for $14.95. Select free store pickup where stock permits.

Features:

Phosphorus Replacement Technology extends emission system life
Superior dispersancy fights sludge build up inside engine
Seal conditioners help reduce oil leaks from aging gaskets
Advanced additives prevent engine wear and improve fuel economy
Meets API SP/SN PLUS/SN/SM and ILSAC GF-6 specifications

Editor's Notes

Written by Neo45 | Staff

This offer matches previous Frontpage Deal that earned 40+ thumbs up.
Don't have Amazon Prime? Students can get a free 6-Month Amazon Prime trial with free 2-day shipping, unlimited video streaming & more.
If you're not a student, there's also a free 1-Month Amazon Prime trial available.

Original Post

Written by pennysave

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.

Phosphorus Replacement Technology extends emission system life
Superior dispersancy fights sludge build up inside engine
Seal conditioners help reduce oil leaks from aging gaskets
Advanced additives prevent engine wear and improve fuel economy
Meets API SP/SN PLUS/SN/SM and ILSAC GF-6 specifications

Editor's Notes

Written by Neo45 | Staff

This offer matches previous Frontpage Deal that earned 40+ thumbs up.
Don't have Amazon Prime? Students can get a free 6-Month Amazon Prime trial with free 2-day shipping, unlimited video streaming & more.
If you're not a student, there's also a free 1-Month Amazon Prime trial available.

Original Post

Written by pennysave

Deal Score

+24

Get Deal at Amazon

Price Intelligence

Model: Castrol GTX High Mileage 10W-30 Synthetic Blend Motor Oil, 5 Quarts

Deal History

Sale Price

Slickdeal

$NaN

Today

Post Date	Sold By	Sale Price	Activity
06/12/26	Amazon	$15 Popular	4
05/23/26	Amazon	$14 Frontpage	19
04/29/26	Amazon	$14 Frontpage	28
04/13/26	Amazon	$14 Frontpage	8
04/10/26	Amazon	$14 Frontpage	4

Current Prices

Sort: Lowest to Highest | Last Updated 6/16/2026, 09:49 AM

Sold By	Sale Price
Amazon	$14.95

Unregistered (You)

6 Comments

1004ron

Jun 13, 2026 07:04 PM

380 Posts

Joined Dec 2012

1004ronJun 13, 2026 07:04 PM

380 Posts

Don't waste your time and money on synthetic blends - full synthetic is what you need

ManoloD

Jun 14, 2026 09:35 PM

1,058 Posts

Joined Jul 2013

ManoloDJun 14, 2026 09:35 PM

1,058 Posts

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

Quote from 1004ron

Don't waste your time and money on synthetic blends - full synthetic is what you need

That's a very general statement and isn't true for every application.

stegall

Today 08:50 AM

4,342 Posts

Joined Sep 2010

stegallToday 08:50 AM

4,342 Posts

Quote from ManoloD

That's a very general statement and isn't true for every application.

Agree fully.

ScarletFuel4913

Today 09:22 AM

53 Posts

Joined Aug 2025

ScarletFuel4913Today 09:22 AM

53 Posts

Any motor oil I've ordered from deals I've found on here never end up delivered... they are always damaged in transit

BearMech13

Today 11:22 AM

9 Posts

Joined Jul 2022

BearMech13Today 11:22 AM

9 Posts

Its oily.

qwiktune

Today 12:19 PM

871 Posts

Joined Feb 2012

qwiktuneToday 12:19 PM

871 Posts

Quote from 1004ron

Don't waste your time and money on synthetic blends - full synthetic is what you need

Big False

Unregistered (You)

Autos Motor Oil Castrol Amazon

Rating:	(4.8 out of 5 stars)
Reviews:	3,401 Amazon Reviews
Manufacturer:	Castrol
Model Number:	03110
Product SKU:	B00GSX43WE
UPC:	79191231104
ASIN:	B00GSX43WE
Brand:	Castrol
Item Dimensions LxWxH:	11.9 x 9.5 x 4.5 Inches
Item model number:	03110
Manufacturer:	Castrol

5-qt Castrol GTX High Mileage Synthetic Blend Motor Oil (10W-30)

$14

$24

Editor's Notes

Original Post

Editor's Notes

Original Post

Community Voting

Price Intelligence

Deal History

Current Prices

Leave a Comment

6 Comments

Leave a Comment

Related Searches

Popular Deals

Trending Deals

5-qt Castrol GTX High Mileage Synthetic Blend Motor Oil (10W-30)

$14

$24

Editor's Notes

Original Post

Editor's Notes

Original Post

Price Intelligence

Deal History Deal History includes data from multiple reputable stores, such as Best Buy, Target, and Walmart. The lowest price among stores for a given day is selected as the "Sale Price". Sale Price does not include sale prices at Amazon unless a deal was posted by a community member.

Current Prices

Leave a Comment

6 Comments

Leave a Comment

Related Searches

Deal History