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frontpagephoinix | Staff posted Apr 18, 2026 01:34 AM

Item 1 of 3

frontpagephoinix | Staff posted Apr 18, 2026 01:34 AM

5-Qt Castrol GTX High Mileage 5W-20 Synthetic Blend Motor Oil

w/ S&S

$14

$24

41% off

Amazon

31 Comments 7,537 Views

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Amazon has 5-Quart Castrol GTX High Mileage 5W-20 Synthetic Blend Motor Oil on sale for $14.95 - $0.75 (5%) when you check out via Subscribe & Save = $14.20. Shipping is free with Prime or on $35+ orders.

Select Advance Auto Parts Stores also have 5-Quart Castrol GTX High Mileage 5W-20 Synthetic Blend Motor Oil on sale for $14.95. Select free store pickup where stock permits.

Note: Availability for pickup may vary by location.

Thanks to Deal Hunter phoinix for finding this deal.

Product Details:

Phosphorus Replacement Technology helps extend emission system life
Superior dispersancy that fights sludge build up
Exceptional oil burn-off protection exceeding industry standards* | Seal conditioners to help reduce leaks
Advanced additives that help prevent engine wear | Improved Fuel Economy**
Meets or exceeds the following specifications: API SP/SN PLUS/SN/SM | ILSAC GF-6 | Meets Ford WSS-M2C945-B1 | Meets Ford WSS-M2C960-A1 |* Based on API and ACEA volatility specifications | ** In 5W-20, 5W-30 and 10W-30 grades versus industry specifications

Editor's Notes

Written by Neo45 | Staff

About this deal:
- Our research indicates that this deal is $8.76 less (38.2% savings) than the next best available price from a reputable merchant with prices starting from $22.96 at the time of this post.
- The price for this deal matches the previous Frontpage Deal.
About this product:
- Rated 4.8 out of 5 stars based on over 3.2k Amazon customer reviews.
About this store:
- 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.
Additional notes:
- Please see the original post for additional details & give the wiki and additional forum comments a read for helpful discussion.

Original Post

Written by phoinix | Staff

Note: Availability for pickup may vary by location.

Thanks to Deal Hunter phoinix for finding this deal.

Product Details:

Phosphorus Replacement Technology helps extend emission system life
Superior dispersancy that fights sludge build up
Exceptional oil burn-off protection exceeding industry standards* | Seal conditioners to help reduce leaks
Advanced additives that help prevent engine wear | Improved Fuel Economy**
Meets or exceeds the following specifications: API SP/SN PLUS/SN/SM | ILSAC GF-6 | Meets Ford WSS-M2C945-B1 | Meets Ford WSS-M2C960-A1 |* Based on API and ACEA volatility specifications | ** In 5W-20, 5W-30 and 10W-30 grades versus industry specifications

Editor's Notes

Written by Neo45 | Staff

About this deal:
- Our research indicates that this deal is $8.76 less (38.2% savings) than the next best available price from a reputable merchant with prices starting from $22.96 at the time of this post.
- The price for this deal matches the previous Frontpage Deal.
About this product:
- Rated 4.8 out of 5 stars based on over 3.2k Amazon customer reviews.
About this store:
- 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.
Additional notes:
- Please see the original post for additional details & give the wiki and additional forum comments a read for helpful discussion.

Original Post

Written by phoinix | Staff

Deal Score

+26

Get Deal at Amazon

Price Intelligence

Model: Castrol GTX High Mileage 5W-20 Synthetic Blend Motor Oil, 5 Quarts

Deal History

Sale Price

Slickdeal

$NaN

Today

Post Date	Sold By	Sale Price	Activity
04/10/26	Amazon	$14 Frontpage	23

Unregistered (You)

31 Comments

dogeatdog

Apr 18, 2026 01:42 AM

878 Posts

Joined Sep 2008

dogeatdogApr 18, 2026 01:42 AM

878 Posts

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

Costco has a 4 pack for $54

BryanB6613

Apr 18, 2026 01:42 AM

29 Posts

Joined Nov 2018

BryanB6613Apr 18, 2026 01:42 AM

29 Posts

Our community has rated this post as helpful. If you agree, why not thank BryanB6613

Just buy any cheap synthetic for $2more. Base oils are much better than this crap. Or buy this and change out before 4k miles since sheer gets out of control imo

ScarletClub661

Apr 18, 2026 06:16 AM

327 Posts

Joined Jul 2024

ScarletClub661Apr 18, 2026 06:16 AM

327 Posts

this is basically what the auto parts stores in my area already charge for this. so basically inferior oil for full price! 🙄

pc800va

Apr 18, 2026 10:03 AM

420 Posts

Joined Mar 2009

pc800vaApr 18, 2026 10:03 AM

420 Posts

10w-30 is also available for the same price with S&S

UniqueMagic721

Apr 18, 2026 11:33 AM

579 Posts

Joined Nov 2020

UniqueMagic721Apr 18, 2026 11:33 AM

579 Posts

Pro tip: While this has nearly identical packaging and labeling as Cascade complete liquid dishwashing soap, DO NOT put Castrol in your automatic dishwasher or vice versa.

ThriftyPayless

Apr 18, 2026 11:57 AM

91 Posts

Joined Jan 2026

ThriftyPaylessApr 18, 2026 11:57 AM

91 Posts

Quote from UniqueMagic721

Pro tip: While this has nearly identical packaging and labeling as Cascade complete liquid dishwashing soap, DO NOT put Castrol in your automatic dishwasher or vice versa.

Same for Penzoil and Mazola, but Penzoil is good on popcorn.

ShrewdFriction889

Apr 18, 2026 12:37 PM

443 Posts

Joined Apr 2018

ShrewdFriction889Apr 18, 2026 12:37 PM

443 Posts

Quote from dogeatdog

Costco has a 4 pack for $54

And the oil Costco is selling is FULL synthetic.

luckydog97

Apr 18, 2026 12:49 PM

4,546 Posts

Joined Nov 2013

luckydog97Apr 18, 2026 12:49 PM

4,546 Posts

Unless your car burns or leaks oil rapidly, don't buy this.

Its well worth the very marginal additional cost to use full synthetic, which offers reliably better protection.

There's barely any regulation on a synthetic "blend"…could barely be better than conventional.

Regular oil changes with quality full synthetic oil and a quality filter will save you thousands in engine issues over the life of the vehicle.

PurpleScent2237

Apr 18, 2026 12:50 PM

70 Posts

Joined Mar 2020

PurpleScent2237Apr 18, 2026 12:50 PM

70 Posts

Synthetic blend

robvas

Apr 18, 2026 02:07 PM

532 Posts

Joined Jun 2011

robvasApr 18, 2026 02:07 PM

532 Posts

Quote from ScarletClub661

this is basically what the auto parts stores in my area already charge for this. so basically inferior oil for full price! 🙄

What? Autozone wants $30.99 for this same thing.

robvas

Apr 18, 2026 02:08 PM

532 Posts

Joined Jun 2011

robvasApr 18, 2026 02:08 PM

532 Posts

Advance Auto has it on closeout for $14.95
https://shop.advanceautoparts.com...10629395-P

CyanTheory

Apr 18, 2026 08:12 PM

211 Posts

Joined Feb 2016

CyanTheoryApr 18, 2026 08:12 PM

211 Posts

+1 for Costco oil

FlyNHi

Yesterday 12:08 AM

267 Posts

Joined Nov 2018

FlyNHiYesterday 12:08 AM

267 Posts

Question for the SDers on this comment line. Before i voted not a great deal .. Thgere were 12 comment and 8 upvotes.. How does this rating and posting work like this when all the comment are MEH and it had 8 upvotes?? Hmmmm SD?

KushKing420

Yesterday 04:44 AM

96 Posts

Joined Jan 2020

KushKing420Yesterday 04:44 AM

96 Posts

Quote from CyanTheory

+1 for Costco oil

I just picked up some since it's on sale. I've been using it for over 5 years with no problems.

crazy-legs

Yesterday 06:29 AM

36 Posts

Joined Feb 2011

crazy-legsYesterday 06:29 AM

36 Posts

Great price. 👍

Unregistered (You)

Autos Motor Oil Motor Oil Castrol Amazon

Rating:	(4.8 out of 5 stars)
Reviews:	3,247 Amazon Reviews
Manufacturer:	Castrol
Model Number:	03100
Product SKU:	B00JGQLS64
UPC:	79191231005
ASIN:	B00JGQLS64
Brand:	Castrol
Item model number:	03100
Manufacturer:	Castrol

5-Qt Castrol GTX High Mileage 5W-20 Synthetic Blend Motor Oil

$14

$24

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5-Qt Castrol GTX High Mileage 5W-20 Synthetic Blend Motor Oil

$14

$24

Editor's Notes

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Original Post

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