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expired Posted by phoinix | Staff • Apr 1, 2024
expired Posted by phoinix | Staff • Apr 1, 2024

5-Quart Mobil 1 Truck & SUV Full Synthetic Motor Oil (5W-20)

$21

$30

30% off
Amazon
55 Comments 28,581 Views
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Deal Details
Amazon has select 5-Quart Mobil 1 Truck & SUV Full Synthetic Motor Oil for $21.29. Shipping is free with Prime or on $35+ orders.

Thanks to Community Member phoinix for finding this deal.

Available:
  • Truck & SUV
    • 5W-20
      • Usually ships within 2 to 5 weeks
Features:
  • Helps protect critical engine parts for up to 10,000 miles between oil changes, controlling oxidation to prevent oil breakdown and maintaining excellent viscosity
  • Utilizes Mobil 1's signature Triple Action Formula to deliver outstanding engine protection, cleanliness, and proven performance in a 10,000 lb. towing test
  • Additives that help prevent deposit formation
  • Provides excellent internal engine heat protection (up to 500 degrees F) and low temperature protection (to -40 degrees F)

Editor's Notes

Written by powerfuldoppler | Staff
  • About this deal:
    • This price is $8.68 lower (29% savings) than the list price of $29.97
  • About this product:
    • Rating of 4.8 from over 41,000 Amazon customer reviews.
  • About this store:
  • Additional note:
    • Please see original post for additional details & give the WIKI and additional forum comments a read for helpful discussion.
No Longer Available:

Original Post

Written by phoinix | Staff
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Amazon has select 5-Quart Mobil 1 Truck & SUV Full Synthetic Motor Oil for $21.29. Shipping is free with Prime or on $35+ orders.

Thanks to Community Member phoinix for finding this deal.

Available:
  • Truck & SUV
    • 5W-20
      • Usually ships within 2 to 5 weeks
Features:
  • Helps protect critical engine parts for up to 10,000 miles between oil changes, controlling oxidation to prevent oil breakdown and maintaining excellent viscosity
  • Utilizes Mobil 1's signature Triple Action Formula to deliver outstanding engine protection, cleanliness, and proven performance in a 10,000 lb. towing test
  • Additives that help prevent deposit formation
  • Provides excellent internal engine heat protection (up to 500 degrees F) and low temperature protection (to -40 degrees F)

Editor's Notes

Written by powerfuldoppler | Staff
  • About this deal:
    • This price is $8.68 lower (29% savings) than the list price of $29.97
  • About this product:
    • Rating of 4.8 from over 41,000 Amazon customer reviews.
  • About this store:
  • Additional note:
    • Please see original post for additional details & give the WIKI and additional forum comments a read for helpful discussion.
No Longer Available:

Original Post

Written by phoinix | Staff

Community Voting

Deal Score
+42
Good Deal
Visit Amazon

Price Intelligence

Model: Mobil 1 Truck & SUV Full Synthetic Motor Oil 5W-20, 5 Quart

Deal History 

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Sort: Lowest to Highest | Last Updated 7/14/2025, 08:24 PM
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Top Comments

Archimedes001
765 Posts
343 Reputation
As a person who used to formulate these products. No, full synthetic is not full synthetic. You're basically talking about the Group III base oils are the same, then the additive mix is different from each company. Also Mobil 1 still uses some PAO so you'll never find that in any Kirkland full synthetic.

Here is the formulation difference between a

Premium synthetic (Mobil 1, Pennzoil Platinum, Castrol EDGE, those types)
Base oil: Group III and/or IV or V mix
Additive package: Premium at around 13-16% treat rate plus whatever marketing claims boosters (sludge, wear, longer drains etc.)
Viscosity modifier: Expensive star polymer which burns cleaner and lasts longer (more shear stable).

Entry level synthetic (Kirkland, Supertech, Amazon basics, etc.)
Base oil: Group III and now maybe even Group II+
Additive package: Market general from one of the big 4 so 8-9% treat rates.
Viscosity modifier: Olefin copolymer type which burn a bit dirtier and tend to be less shear stable but they are cheaper.

So the first one is formulated to meet some marketing performance claim and was always meant to be a more expensive top tier fluid.

The second one is a cheap meant to meet a bid from Costco or Amazon so literally a tenth of a cent will be cut from those products to get the bid. Hence you get the absolute minimum amount of additives to meet API and dexos1.

As for those specs, there is a window sort of like a test. Getting say an 8.0 is passing and the second group of products target 8.0, and if I got a higher result I'd take some additive out and try again until I just hit the 8.0. If I could make a 7.5% treat additive pack I'd get more business and that's the goal. The first, premium group of products, marketing will ask for a higher target and allow us to put more in to help them sell the product with performance claims. They are more premium products so spending a bit more on additives is acceptable.

Now if you want to go to project farm and cook your oil in a coffee pot to say they are equal... you can but instead I used to run fired engine tests at SWRI and Intertek and get actual deposit, sludge, wear test results and I saw that on my skinny cheap packs vs. my premium packs.

So long answer but no full synthetic isn't full synthetic. Also don't fall for "synthetic technology" that's like "cheese food" has no cheese.

One last note: Turbos hate deposits, it kills their bearings so those cheap, dirty OCP polymers could shorten the life of the turbo.
p.valadez
13 Posts
10 Reputation
Except tylonol arthritis has less of a dose and migraine has caffeine so...lol

54 Comments

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Apr 2, 2024
756 Posts
Joined Nov 2013
Apr 2, 2024
NateN8140
Apr 2, 2024
756 Posts
It says 1-4 weeks however when you place the order it says by June 12th
Apr 2, 2024
934 Posts
Joined Aug 2006
Apr 2, 2024
wolfsmane
Apr 2, 2024
934 Posts
Repost
3
Apr 2, 2024
50 Posts
Joined Dec 2011
Apr 2, 2024
edeal_finder
Apr 2, 2024
50 Posts
Costco has Kirkland brand coming up on sale soon starting 4/10 . Is this brand better?
Apr 2, 2024
3,247 Posts
Joined Sep 2005
Apr 2, 2024
tcope
Apr 2, 2024
3,247 Posts
Quote from edeal_finder :
Costco has Kirkland brand coming up on sale soon starting 4/10 . Is this brand better?
Better brand? Who knows, as it all comes down to the secret ingredients. I'd say full synthetic is full synthetic.
2
Apr 2, 2024
50 Posts
Joined Dec 2011
Apr 2, 2024
edeal_finder
Apr 2, 2024
50 Posts
Quote from tcope :
Better brand? Who knows, as it all comes down to the secret ingredients. I'd say full synthetic is full synthetic.
Costco Kirkland brand is also full synthetic. It will be around low 30is for 2 - 5 qts after $9 off .
Been using this for a while …. no issues.
Apr 2, 2024
56 Posts
Joined Dec 2011
Apr 2, 2024
yuejdesigner85
Apr 2, 2024
56 Posts
What makes engine oil specific for trucks and SUV? I used Costco 0w-20 to change oil in truck, is that bad? The truck requires 0w-20 , so I'm not using the wrong grade, I guess
1
Apr 2, 2024
136 Posts
Joined Nov 2010
Apr 2, 2024
zastrow
Apr 2, 2024
136 Posts
Quote from yuejdesigner85 :
What makes engine oil specific for trucks and SUV? I used Costco 0w-20 to change oil in truck, is that bad? The truck requires 0w-20 , so I'm not using the wrong grade, I guess
i can't imagine it's any different. it's like how there is a Tylenol label for ARTHRITIS, and a different label for MIGRAINE but it's still just Tylenol
1
2

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Apr 2, 2024
95 Posts
Joined Jan 2018
Apr 2, 2024
nathan.swigert
Apr 2, 2024
95 Posts
5-30 gone
1
Apr 2, 2024
13 Posts
Joined Apr 2015
Apr 2, 2024
p.valadez
Apr 2, 2024
13 Posts
Quote from edeal_finder :
Costco has Kirkland brand coming up on sale soon starting 4/10 . Is this brand better?
It's literally the same!
4
Apr 2, 2024
13 Posts
Joined Apr 2015
Apr 2, 2024
p.valadez
Apr 2, 2024
13 Posts
Quote from zastrow :
i can't imagine it's any different. it's like how there is a Tylenol label for ARTHRITIS, and a different label for MIGRAINE but it's still just Tylenol
Except tylonol arthritis has less of a dose and migraine has caffeine so...lol
Apr 2, 2024
13 Posts
Joined Apr 2015
Apr 2, 2024
p.valadez
Apr 2, 2024
13 Posts
Quote from yuejdesigner85 :
What makes engine oil specific for trucks and SUV? I used Costco 0w-20 to change oil in truck, is that bad? The truck requires 0w-20 , so I'm not using the wrong grade, I guess
Use manufacturer recommended oil some engines require it
1
Apr 2, 2024
9 Posts
Joined Jun 2016
Apr 2, 2024
hayabusa160
Apr 2, 2024
9 Posts
Quote from zastrow :
i can't imagine it's any different. it's like how there is a Tylenol label for ARTHRITIS, and a different label for MIGRAINE but it's still just Tylenol
quite different actually tylenol for migrains has caffine in it which is a vasodilator. arthritis one is a coated table with a slow release dose in the middle for extended paint relief.

car vs truck formula starts with the same base but the truck has slightly different additive formula
Apr 2, 2024
1,010 Posts
Joined Jan 2007
Apr 2, 2024
Alpha__Omega
Apr 2, 2024
1,010 Posts
Quote from p.valadez :
Use manufacturer recommended oil some engines require it
Nope, no such thing (in reality) a Tacoma oil different from Camry oil, or Porsche 944, or Ford F-250 oil. Marketing BS.
1
1
Apr 2, 2024
1,668 Posts
Joined Dec 2011
Apr 2, 2024
MyBallsItch
Apr 2, 2024
1,668 Posts
It's hard to find the right oil for my fiat 500, it doesn't fully speak french or english, maybe I need cajun oil?
1

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Pro
Apr 2, 2024
83 Posts
Joined Sep 2023
Apr 2, 2024
Zank_Ree
Pro
Apr 2, 2024
83 Posts
Quote from tcope :
Better brand? Who knows, as it all comes down to the secret ingredients. I'd say full synthetic is full synthetic.
Mobile 1, is one of couple brand that don't leave some type of coating on your engine parts. It's probably the best synthetic out there. You'll have to look for it on youtube. It has something to do with engine temperature not being hot enough to thin out the oil. Great for people who drive long distances, but terrible for people who drive short distances.
2

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