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frontpagepennysave posted Jun 13, 2026 02:49 PM
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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
9 Comments
8,111 Views
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Deal Details
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.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

Original Post

Written by pennysave
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
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.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

Original Post

Written by pennysave

Community Voting

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Top Comments

ManoloD
1059 Posts
703 Reputation
That's a very general statement and isn't true for every application.

9 Comments

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Jun 13, 2026 07:04 PM
385 Posts
Joined Dec 2012
1004ronJun 13, 2026 07:04 PM
385 Posts
Don't waste your time and money on synthetic blends - full synthetic is what you need
1
1
6
Jun 14, 2026 09:35 PM
1,059 Posts
Joined Jul 2013
ManoloDJun 14, 2026 09:35 PM
1,059 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.
1
Jun 16, 2026 08:50 AM
4,354 Posts
Joined Sep 2010
stegallJun 16, 2026 08:50 AM
4,354 Posts
Quote from ManoloD :
That's a very general statement and isn't true for every application.
Agree fully.
Jun 16, 2026 09:22 AM
59 Posts
Joined Aug 2025
ScarletFuel4913Jun 16, 2026 09:22 AM
59 Posts
Any motor oil I've ordered from deals I've found on here never end up delivered... they are always damaged in transit
Jun 16, 2026 11:22 AM
13 Posts
Joined Jul 2022
BearMech13Jun 16, 2026 11:22 AM
13 Posts
Its oily.
Jun 16, 2026 12:19 PM
872 Posts
Joined Feb 2012
qwiktuneJun 16, 2026 12:19 PM
872 Posts
Quote from 1004ron :
Don't waste your time and money on synthetic blends - full synthetic is what you need
Big False
2
Jun 16, 2026 06:50 PM
1,538 Posts
Joined Aug 2005
desidude2000Jun 16, 2026 06:50 PM
1,538 Posts
Quote from qwiktune :
Big False
Exactly. I put full synthetic in an old Toyota sequoia with high mileage and it started leaking from the head. Full synthetic isn't always the way to go.

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Jun 19, 2026 04:08 PM
119 Posts
Joined Sep 2019
ColdWeatherSuxJun 19, 2026 04:08 PM
119 Posts
Quote from ManoloD :
That's a very general statement and isn't true for every application.
Agree. Especially here in the states where "Full Synthetic" and "Synthetic Blend" can both be applied to Group III base stocks. Granted, a fair number of "Full Synthetics" are only applying that term when talking about using GTL technology...but there's many "Synthetic Blends" that would readily outclass "Full Synthetics" of 10-15 years ago...especially when we're talking SQ rated oils like this one.
Jun 19, 2026 04:25 PM
33 Posts
Joined Mar 2018
jrj90620Jun 19, 2026 04:25 PM
33 Posts
All I'm seeing for weights of 5 qt Castrol synthetic oil at Amazon is priced about $24.

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