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expiredphoinix | Staff posted Apr 08, 2026 01:43 PM
expiredphoinix | Staff posted Apr 08, 2026 01:43 PM

5-Qt Castrol GTX Full Synthetic Motor Oil (5W-20)

w/ S&S

$19

$25

24% off
Amazon
20 Comments 6,100 Views
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Deal Details
Amazon has 5-Quart Castrol GTX Full Synthetic Motor Oil (5W-20) for $20.37 - 5% ($1.02) when you check out via Subscribe & Save = $19.35. 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 phoinix for finding this deal.

Product Description:
  • 6X better wear protection on critical engine parts than industry standards**
  • 1.3X better sludge protection than industry standards*
  • 3X Stronger against viscosity breakdown than leading full synthetic^
  • Protection for 10,000 miles between oil changes
  • Meets or exceeds the following specifications: API SP/SN PLUS/SN | ILSAC GF-6 | Meets Ford WSS-M2C945-B1 | Meets Ford WSS-M2C960-A1 |

Editor's Notes

Written by SubZero5 | Staff
  • About this Deal:
    • This offer matches the recent FP deal.
    • Our research indicates that this offer is $9.73 lower (33% savings) than the next best available price from a reputable merchant with prices starting from $29.08.
  • About this Product:
    • Rating of 4.9 stars overall from over 1,900 customer ratings.
  • About this Store:

Original Post

Written by phoinix | Staff
Product Info
Community Notes
About the Poster
Deal Details
Product Info
Community Notes
About the Poster
Amazon has 5-Quart Castrol GTX Full Synthetic Motor Oil (5W-20) for $20.37 - 5% ($1.02) when you check out via Subscribe & Save = $19.35. 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 phoinix for finding this deal.

Product Description:
  • 6X better wear protection on critical engine parts than industry standards**
  • 1.3X better sludge protection than industry standards*
  • 3X Stronger against viscosity breakdown than leading full synthetic^
  • Protection for 10,000 miles between oil changes
  • Meets or exceeds the following specifications: API SP/SN PLUS/SN | ILSAC GF-6 | Meets Ford WSS-M2C945-B1 | Meets Ford WSS-M2C960-A1 |

Editor's Notes

Written by SubZero5 | Staff
  • About this Deal:
    • This offer matches the recent FP deal.
    • Our research indicates that this offer is $9.73 lower (33% savings) than the next best available price from a reputable merchant with prices starting from $29.08.
  • About this Product:
    • Rating of 4.9 stars overall from over 1,900 customer ratings.
  • About this Store:

Original Post

Written by phoinix | Staff

Community Voting

Deal Score
+45
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20 Comments

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Apr 08, 2026 04:46 PM
30 Posts
Joined Jun 2018
alecm8292Apr 08, 2026 04:46 PM
30 Posts
Good oil
Apr 08, 2026 05:05 PM
1,187 Posts
Joined Mar 2008
DealHunterNYC212Apr 08, 2026 05:05 PM
1,187 Posts
I prefer balsamic on my salad but this is a close second
3
Apr 08, 2026 05:24 PM
131 Posts
Joined May 2018
GreyRiver608Apr 08, 2026 05:24 PM
131 Posts
That's in kirkland territory
Apr 08, 2026 05:47 PM
265 Posts
Joined Nov 2005
tantrumsApr 08, 2026 05:47 PM
265 Posts
Nice!
Apr 08, 2026 05:59 PM
1,201 Posts
Joined Jul 2004
BayouGrumpApr 08, 2026 05:59 PM
1,201 Posts
Quote from DealHunterNYC212 :
I prefer balsamic on my salad but this is a close second
Agreed. I grabbed 2 at $18.33 each. The full synthetic has a fresher taste than that old dino stuff.
2
Apr 08, 2026 06:07 PM
51 Posts
Joined Nov 2012
HungTran916Apr 08, 2026 06:07 PM
51 Posts
The Costco Kirkland deal is better!
Apr 08, 2026 06:09 PM
47 Posts
Joined Feb 2008
ogiewonApr 08, 2026 06:09 PM
47 Posts
Nice deal!

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Apr 08, 2026 06:10 PM
2,157 Posts
Joined Jul 2008
kfunk7Apr 08, 2026 06:10 PM
2,157 Posts
Group III base if you care.
1
Apr 08, 2026 06:57 PM
108 Posts
Joined Nov 2013
daubersApr 08, 2026 06:57 PM
108 Posts
Oos...
Apr 08, 2026 08:52 PM
1,197 Posts
Joined Dec 2007
Platin465Apr 08, 2026 08:52 PM
1,197 Posts
I'd buy Costco, but that's too much oil for one vehicle. These deals are the way I go. Thanks!

edit: I've bought in bulk before, only for the remaining unopened bottles to eat through the plastic. I don't drive much.
Apr 09, 2026 12:07 AM
5 Posts
Joined Aug 2016
ryan6916Apr 09, 2026 12:07 AM
5 Posts
I returned it because it was manufactured in 2017.
1
Apr 09, 2026 01:34 AM
2,461 Posts
Joined Oct 2008
asukaApr 09, 2026 01:34 AM
2,461 Posts

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

API SQ is the latest standard. SP is solid. SQ extends engine longevity even more with newer detergents that protect the timing chain and turbocharger better.
1
Apr 09, 2026 01:34 AM
2,461 Posts
Joined Oct 2008
asukaApr 09, 2026 01:34 AM
2,461 Posts
Quote from ryan6916 :
I returned it because it was manufactured in 2017.
Most oil makers use the same UPC forever. If it's shipped and sold by Amazon, it shouldn't be that old.

That said they only recently stopped unified inventory, to block the very situation you encounteted.
Apr 09, 2026 03:48 AM
267 Posts
Joined Mar 2018
RicknAustinApr 09, 2026 03:48 AM
267 Posts
No longer at this price, now 5% off plus S&S discount

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Apr 09, 2026 02:06 PM
131 Posts
Joined May 2018
GreyRiver608Apr 09, 2026 02:06 PM
131 Posts
Quote from asuka :
Most oil makers use the same UPC forever. If it's shipped and sold by Amazon, it shouldn't be that old.

That said they only recently stopped unified inventory, to block the very situation you encounteted.
I was going to say the same, it's hard to believe Amazon would let something this large sitting on their inventory for that long

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