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expiredphoinix | Staff posted Dec 03, 2025 06:38 PM
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expiredphoinix | Staff posted Dec 03, 2025 06:38 PM

[S&S] $6.31: 12-Oz STP Direct Injection Fuel Injector Cleaner at Amazon

$6.31

$14

54% off
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Amazon [amazon.com] has 12-Oz STP Direct Injection Fuel Injector Cleaner for $6.64 - 5% when you check out via Subscribe & Save = $6.31.
Shipping is free with Prime or on $35+ orders.

Price
$7.98 lower (56% savings) than the typical price of $14.29
$6.22 lower (50% savings) than the previous price of $12.53

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5%: $6.31
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Customer reviews
4.7⭐ / 2,009
200+ bought in past month

amazon.com/dp/B002FYIS7Q [amazon.com]

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Deal Details
Product Info
Community Notes
About the Poster
Amazon [amazon.com] has 12-Oz STP Direct Injection Fuel Injector Cleaner for $6.64 - 5% when you check out via Subscribe & Save = $6.31.
Shipping is free with Prime or on $35+ orders.

Price
$7.98 lower (56% savings) than the typical price of $14.29
$6.22 lower (50% savings) than the previous price of $12.53

Subscribe & Save
5%: $6.31
Add to next delivery [amazon.com] (with free shipping)
fillers [amazon.com]

Customer reviews
4.7⭐ / 2,009
200+ bought in past month

amazon.com/dp/B002FYIS7Q [amazon.com]

My other deals

Community Voting

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Price Intelligence

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

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5 Comments

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Dec 03, 2025 06:42 PM
6,321 Posts
Joined Dec 2009
wwjrdDec 03, 2025 06:42 PM
6,321 Posts
Need the fuel gurus blessing before I put this in my family's life.
Dec 03, 2025 06:51 PM
2,239 Posts
Joined Oct 2008
asukaDec 03, 2025 06:51 PM
2,239 Posts
Quote from wwjrd :
Need the fuel gurus blessing before I put this in my family's life.
It's fine. If you're going to do it to be proactive, I recommend doing it right before an oil change. Pour in, tank up, run fuel down to quarter tank or refuel, then oil change. Anything that combusts like contaminants kicked into the fuel, that then go into the engine, will then hit the oil and oil filter you're about to dump out during the oil change.
Dec 03, 2025 07:40 PM
126 Posts
Joined Aug 2018
zv300Dec 03, 2025 07:40 PM
126 Posts
Good price, normally 2x times this sale.
1
Dec 03, 2025 08:51 PM
24 Posts
Joined Oct 2021
AquaBike930Dec 03, 2025 08:51 PM
24 Posts
These don't actually do anything for DI engines that top tier fuels with detergents already do. Save up money for a valve cleaning instead of buying this stuff.
Pro
Dec 03, 2025 08:53 PM
3,885 Posts
Joined Sep 2011
JESSE_VENTURA
Pro
Dec 03, 2025 08:53 PM
3,885 Posts
Jetron

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