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frontpageRokket | Staff posted Yesterday 02:59 AM

Item 1 of 4

frontpageRokket | Staff posted Yesterday 02:59 AM

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

w/ S&S

$14

$32

56% off

Amazon

8 Comments 2,524 Views

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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 Deal Hunter Rokket for finding this deal.

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 megakimcheelove | Staff

This offer matches previous Front Page deal that earned 56+ 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 Rokket | Staff

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 Deal Hunter Rokket for finding this deal.

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 megakimcheelove | Staff

This offer matches previous Front Page deal that earned 56+ 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 Rokket | Staff

Deal Score

+17

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
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 5/25/2026, 03:17 AM

Sold By	Sale Price
Amazon	$20.97

Unregistered (You)

8 Comments

SharpManatee101

Yesterday 04:06 AM

4 Posts

Joined Apr 2026

SharpManatee101Yesterday 04:06 AM

4 Posts

It's not a bad deal but not too amazing either

JAX-FL

Yesterday 12:50 PM

510 Posts

Joined Aug 2010

JAX-FLYesterday 12:50 PM

510 Posts

Quote from SharpManatee101

It's not a bad deal but not too amazing either

Thats because this isnt not a bad deal.com nor not too amazing.com. Is it slick though? Id say yes, but only because its oil. nyuck nyuck. Big Grin

Last edited by JAX-FL May 24, 2026 at 06:01 AM.

MX400ex72

Yesterday 04:21 PM

2,839 Posts

Joined Aug 2016

MX400ex72Yesterday 04:21 PM

2,839 Posts

Got one for the mowers. Quick google search suggest small engines may benefit from a syn blend more so than full syn.

Either way, it's going in the mower, which likely doesn't care much what oil you put in it.

bilderberg

Yesterday 08:28 PM

1,101 Posts

Joined Nov 2015

bilderbergYesterday 08:28 PM

1,101 Posts

Meh deal for a blend. But like MX400 said, good for lawn equipment.

san-mel

Today 05:05 PM

495 Posts

Joined Jan 2015

san-melToday 05:05 PM

495 Posts

Good enough.

FairMustang164

Today 05:13 PM

20 Posts

Joined Mar 2026

FairMustang164Today 05:13 PM

20 Posts

just ok deal

fsu67

Today 05:45 PM

685 Posts

Joined Dec 2012

fsu67Today 05:45 PM

685 Posts

Looks like a pretty good deal, I haven't seen too many blends on sale. I have an older truck with a few leaks and this is what I use, I don't know why when I use full synthetic it leaks much worse.

GreyTent1404

Today 05:53 PM

157 Posts

Joined Aug 2018

GreyTent1404Today 05:53 PM

157 Posts

no matter what, it is most important that you actually change your oil. The type is the least important

Unregistered (You)

Autos Motor Oil Motor Oil Castrol Amazon

Rating:	(4.8 out of 5 stars)
Reviews:	3,348 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

$32

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

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$32

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Original Post

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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.

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