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expiredhtp182 | Staff posted Dec 11, 2025 01:50 PM
expiredhtp182 | Staff posted Dec 11, 2025 01:50 PM

12-Oz STP Direct Injection Fuel Injector Cleaner

w/ Subscribe & Save

$6.50

$14

53% off
Amazon
13 Comments 3,452 Views
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Deal Details
Amazon has 12-Oz STP Direct Injection Fuel Injector Cleaner on sale for $6.84 - 5% when you check out via Subscribe & Save = $6.50. Shipping is free w/ Prime or on $35+.

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 htp182 for finding this deal.

Features:
  • One 12 fl oz bottle of STP Complete Fuel System Cleaner for a variety of gasoline engines
  • This car fuel treatment has 2x the amount of cleaning agents versus leading premium gasoline
  • PEA and PIBA detergents get rid of deposits to keep your system clean and fuel efficient
  • Fuel system cleaner helps inhibit corrosion and restores engine performance for convenient and versatile car products
  • Use this complete STP fuel system cleaner at every oil change or every 4,000 miles
  • Jet fuel creates a high-quality carrier for the active ingredients in this auto cleaner
  • Fuel system cleaner that is compatible with all gasoline engines, including turbo, direct inject and hybrid engines

Editor's Notes

Written by powerfuldoppler | Staff
  • About this deal:
    • Our research indicates that this offer is $3.49 lower (34% savings) than the next best available price from a reputable merchant with prices starting from $9.99
  • About this store:

Original Post

Written by htp182 | Staff
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Amazon has 12-Oz STP Direct Injection Fuel Injector Cleaner on sale for $6.84 - 5% when you check out via Subscribe & Save = $6.50. Shipping is free w/ Prime or on $35+.

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 htp182 for finding this deal.

Features:
  • One 12 fl oz bottle of STP Complete Fuel System Cleaner for a variety of gasoline engines
  • This car fuel treatment has 2x the amount of cleaning agents versus leading premium gasoline
  • PEA and PIBA detergents get rid of deposits to keep your system clean and fuel efficient
  • Fuel system cleaner helps inhibit corrosion and restores engine performance for convenient and versatile car products
  • Use this complete STP fuel system cleaner at every oil change or every 4,000 miles
  • Jet fuel creates a high-quality carrier for the active ingredients in this auto cleaner
  • Fuel system cleaner that is compatible with all gasoline engines, including turbo, direct inject and hybrid engines

Editor's Notes

Written by powerfuldoppler | Staff
  • About this deal:
    • Our research indicates that this offer is $3.49 lower (34% savings) than the next best available price from a reputable merchant with prices starting from $9.99
  • About this store:

Original Post

Written by htp182 | Staff

Community Voting

Deal Score
+18
Good Deal
Visit Amazon

Price Intelligence

Model: STP Direct Injection Fuel Injector Cleaner, Advanced Synthetic Technology Fuel Cleaner Dissolves Hardened Deposits that Accumulate on Injectors, 12 Oz, STP

Deal History 

Sort: Most Recent
Post Date Sold By Sale Price Activity
12/03/25Amazon$6.50 popular
7
12/03/25Amazon$6.31
5

Current Prices

Sort: Lowest to Highest | Last Updated 12/13/2025, 01:28 AM
Sold By Sale Price
Amazon$13.80

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Top Comments

CrimsonSnail
6 Posts
18 Reputation
The most effective fuel system cleaner products use highly concentrated polyetheramine ("PEA") detergents to clean clogged fuel injectors and restore maximum injector flow. Some fuel system cleaner products do not have it at all and some fuel system cleaner products have more PEA than others. Some of the highly recommended products containing PEA are - Royal Purple Max Clean Fuel System Cleaner, Liqui Moly Jectron Fuel Injection Cleaner, Rislone Gas Fuel System Treatment, and others.

I took a look at Wal*Mart's SuperTech branded products when I was in the store a couple of weeks ago and did not see a PEA endorsement on the bottle. I wound up picking up a bottle of Rislone Gas Fuel System Treatment on clearance at AutoZone for $8.

I have also seen several suggestions to use any of these products in a more highly concentrated manner than suggested by adding it when there's only a quarter tank of fuel remaining and running it down to empty before adding more fuel to dilute the cleaning product. You're not going to blow up your motor with any of these products.

All that said, in this case more than others.. the usual "your mileage may vary" disclaimer is pretty accurate when it comes to these products.

12 Comments

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Dec 11, 2025 02:57 PM
243 Posts
Joined Dec 2014

This comment has been rated as unhelpful by Slickdeals users.

Dec 11, 2025 03:26 PM
74 Posts
Joined Oct 2014
CameronN7188Dec 11, 2025 03:26 PM
74 Posts
Doesn't Walmart sell a store-brand version in a smaller size of this product for $2-3? Curious why anyone would want to buy this larger size.
1
Dec 11, 2025 03:46 PM
6 Posts
Joined Aug 2020
CrimsonSnailDec 11, 2025 03:46 PM
6 Posts

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

The most effective fuel system cleaner products use highly concentrated polyetheramine ("PEA") detergents to clean clogged fuel injectors and restore maximum injector flow. Some fuel system cleaner products do not have it at all and some fuel system cleaner products have more PEA than others. Some of the highly recommended products containing PEA are - Royal Purple Max Clean Fuel System Cleaner, Liqui Moly Jectron Fuel Injection Cleaner, Rislone Gas Fuel System Treatment, and others.

I took a look at Wal*Mart's SuperTech branded products when I was in the store a couple of weeks ago and did not see a PEA endorsement on the bottle. I wound up picking up a bottle of Rislone Gas Fuel System Treatment on clearance at AutoZone for $8.

I have also seen several suggestions to use any of these products in a more highly concentrated manner than suggested by adding it when there's only a quarter tank of fuel remaining and running it down to empty before adding more fuel to dilute the cleaning product. You're not going to blow up your motor with any of these products.

All that said, in this case more than others.. the usual "your mileage may vary" disclaimer is pretty accurate when it comes to these products.
7
Dec 11, 2025 04:35 PM
29 Posts
Joined Nov 2023
FeistyBike8803Dec 11, 2025 04:35 PM
29 Posts
Quote from CrimsonSnail :
The most effective fuel system cleaner products use highly concentrated polyetheramine ("PEA") detergents to clean clogged fuel injectors and restore maximum injector flow. Some fuel system cleaner products do not have it at all and some fuel system cleaner products have more PEA than others. Some of the highly recommended products containing PEA are - Royal Purple Max Clean Fuel System Cleaner, Liqui Moly Jectron Fuel Injection Cleaner, Rislone Gas Fuel System Treatment, and others.

I took a look at Wal*Mart's SuperTech branded products when I was in the store a couple of weeks ago and did not see a PEA endorsement on the bottle. I wound up picking up a bottle of Rislone Gas Fuel System Treatment on clearance at AutoZone for $8.

I have also seen several suggestions to use any of these products in a more highly concentrated manner than suggested by adding it when there's only a quarter tank of fuel remaining and running it down to empty before adding more fuel to dilute the cleaning product. You're not going to blow up your motor with any of these products.

All that said, in this case more than others.. the usual "your mileage may vary" disclaimer is pretty accurate when it comes to these products.
Thank you for the information. I have used Royal Purple based on endorsements I've read. Good to know what to look for.
Dec 11, 2025 07:38 PM
1,037 Posts
Joined May 2021
JollyReward108Dec 11, 2025 07:38 PM
1,037 Posts
I doubt it works any better than Texaco Techron which costs me less.
Dec 11, 2025 07:43 PM
450 Posts
Joined Dec 2011
whodey69Dec 11, 2025 07:43 PM
450 Posts
Quote from olzoot :
Snake oil?

no, if you have to ensure the best odds that your engine gets over 200k using this stuff is a good practice.

If you only use top tier fuel then this stuff may not be as needed but cheap cost for the extra insurance.
1
Dec 11, 2025 07:54 PM
23 Posts
Joined Feb 2006
Derek0302Dec 11, 2025 07:54 PM
23 Posts
Quote from CrimsonSnail :
The most effective fuel system cleaner products use highly concentrated polyetheramine ("PEA") detergents to clean clogged fuel injectors and restore maximum injector flow. Some fuel system cleaner products do not have it at all and some fuel system cleaner products have more PEA than others. Some of the highly recommended products containing PEA are - Royal Purple Max Clean Fuel System Cleaner, Liqui Moly Jectron Fuel Injection Cleaner, Rislone Gas Fuel System Treatment, and others.

I took a look at Wal*Mart's SuperTech branded products when I was in the store a couple of weeks ago and did not see a PEA endorsement on the bottle. I wound up picking up a bottle of Rislone Gas Fuel System Treatment on clearance at AutoZone for $8.

I have also seen several suggestions to use any of these products in a more highly concentrated manner than suggested by adding it when there's only a quarter tank of fuel remaining and running it down to empty before adding more fuel to dilute the cleaning product. You're not going to blow up your motor with any of these products.

All that said, in this case more than others.. the usual "your mileage may vary" disclaimer is pretty accurate when it comes to these products.
They are designed to slowly break up the carbon deposits. Break off a chunk and have it hit a valve or bounce around on your cylinder wall and you'll see why they recommend using every oil change.

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Dec 11, 2025 08:08 PM
1,208 Posts
Joined Dec 2008
ZV3Dec 11, 2025 08:08 PM
1,208 Posts
Says it has PEA.
Dec 11, 2025 08:21 PM
3 Posts
Joined Jul 2023
WiseCreator3142Dec 11, 2025 08:21 PM
3 Posts
Says only one available
Dec 11, 2025 08:35 PM
5,347 Posts
Joined Mar 2005
TowHeadDec 11, 2025 08:35 PM
5,347 Posts
Would this work in my Tesla? /s
1
Dec 11, 2025 08:38 PM
115 Posts
Joined Sep 2016
qsnexusbDec 11, 2025 08:38 PM
115 Posts
Dead; shows $13.99 as the cheapest price now.
Dec 11, 2025 09:57 PM
157 Posts
Joined Mar 2017
wsm233Dec 11, 2025 09:57 PM
157 Posts
Dead now

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