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frontpage Posted by ArseneWenger • 13h ago
frontpage Posted by ArseneWenger • 13h ago

5-qt Castrol GTX Full Synthetic Motor Oil: 0W-20 $22.75, 5W-20

w/ Subscribe & Save

$20

$26

23% off
Amazon
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Deal Details
Amazon has 5-qt Castrol GTX Full Synthetic Motor Oil (5W-20) on sale for $21.08 - $1.05 (5% Subscribe & Save discount) = $20.03. Shipping is free with Prime or on $35+ orders.

Amazon has 5-qt Castrol GTX Full Synthetic Motor Oil (0W-20) on sale for $23.96 - $1.20 (5% Subscribe & Save discount) = $22.76. Shipping is free with Prime or on $35+ orders.

Thanks to community member ArseneWenger for finding this deal.

Features:
  • 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

Editor's Notes

Written by megakimcheelove | Staff

Original Post

Written by ArseneWenger
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Amazon has 5-qt Castrol GTX Full Synthetic Motor Oil (5W-20) on sale for $21.08 - $1.05 (5% Subscribe & Save discount) = $20.03. Shipping is free with Prime or on $35+ orders.

Amazon has 5-qt Castrol GTX Full Synthetic Motor Oil (0W-20) on sale for $23.96 - $1.20 (5% Subscribe & Save discount) = $22.76. Shipping is free with Prime or on $35+ orders.

Thanks to community member ArseneWenger for finding this deal.

Features:
  • 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

Editor's Notes

Written by megakimcheelove | Staff

Original Post

Written by ArseneWenger

Community Voting

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Top Comments

Here's a wild idea, maybe you should use the oil specs that your owners manual says to use.

11 Comments

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5h ago
3,912 Posts
Joined Aug 2011

This comment has been rated as unhelpful by Slickdeals users.

5h ago
97 Posts
Joined Nov 2014
5h ago
jard1s
5h ago
97 Posts
Quote from fritzo :
Just a quick tip- probably not good to use this in the summer as it's a thinner oil. This is more on a cold winter oil.

Theoretically correct that it functions better in the cold than 0w but should be fine for summer as well.
4h ago
1,334 Posts
Joined Oct 2016
4h ago
looser24
4h ago
1,334 Posts

Our community has rated this post as helpful. If you agree, why not thank looser24

Here's a wild idea, maybe you should use the oil specs that your owners manual says to use.
5
2
1
3h ago
716 Posts
Joined Nov 2012
3h ago
slickbanger
3h ago
716 Posts
Quote from looser24 :
Here's a wild idea, maybe you should use the oil specs that your owners manual says to use.
Oil is oil ask your brother diddy👌
4
Original Poster
Pro
2h ago
2,966 Posts
Joined Feb 2011
2h ago
ArseneWenger
2h ago
Original Poster
Pro
2,966 Posts
The higher end "Edge" line is also the same price for 0W-20.
2h ago
919 Posts
Joined May 2007
2h ago
goixiz
2h ago
919 Posts
Quote from fritzo :
Just a quick tip- probably not good to use this in the summer as it's a thinner oil. This is more on a cold winter oil.
depends on your motor not a general statement
2h ago
428 Posts
Joined Jun 2011
2h ago
robvas
2h ago
428 Posts
Shame there's no 5-30 or 5-40

0-20 and 5-20 are a joke
2

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2h ago
342 Posts
Joined Apr 2010
2h ago
rs21
2h ago
342 Posts
Walmart price is $21.03, https://www.walmart.com/ip/Castro...om=/search

Will get it from walmart
1h ago
44 Posts
Joined Jul 2022
1h ago
PurpleLadybug1016
1h ago
44 Posts
Quote from robvas :
Shame there's no 5-30 or 5-40

0-20 and 5-20 are a joke

Try this
https://a.co/d/bbpzbHh
1h ago
1,242 Posts
Joined Sep 2011
1h ago
Souka
1h ago
1,242 Posts
Quote from robvas :
Shame there's no 5-30 or 5-40

0-20 and 5-20 are a joke
Guess you won't like the 0w-8 that's out now. shake head


I got 3 cars, 3 different oil weight spec.
0w-20, 5w-20, 5w-30

to keep life a bit simpler I run 5w-30 in the 5w-20 spec vehicle.
All have VVT... the 5w-30 is no problem for the 5w-20 spec motor, it was implemented to improve MPG.
Far as flow and wear, after 130k miles, the mpg difference is hardly noticeable. oil tests show no change in engine wear metals either.

My $.02
Last edited by Souka June 24, 2025 at 12:16 PM.
54m ago
187 Posts
Joined Dec 2010
54m ago
tmony
54m ago
187 Posts
Quote from ArseneWenger :
The higher end "Edge" line is also the same price for 0W-20.
Link?

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