You pour entire bottle into your gas tank, right before you fill up. Then fill up your vehicle with gas afterwards to top it off and give a good mixture. Then drive like normal.

I have a direct injector system in my Honda ridgeline will it clean it?

Thank you for submitting your question! the product is effective on all gasoline engines including direct injector engines. For any further information please reach out to us on 1-800-383-7323 or email us on customersupport@energizer.com to assist you better. Energizer Consumer Services

Will it work on a boat?

I don't know what kind of fuel you using on your boat but if is the same as the regular fuel we use in the cars you should be good to go. Something you need to do special mixes for small engines so make sure you double check.

Does this clean spark plugs?

Thank you for submitting your question! Yes, the product will clean spark plugs. For any further information please reach out to us on 800-776-1530 or autohelpline@energizer.com to assist you better. STP Consumer Services. Thank you!

Stp Ultra 5 In 1 Fuel System Cleaner And Stabilizer

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

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Description

⚡ Power up your ride with STP Ultra 5-in-1 — Clean fuel, smooth engine, more miles!

EASY DIY MAINTENANCE - Just pour one bottle into a half-full tank every 4,000 miles—no mechanic needed.
ENGINE LONGEVITY BOOSTER - Fights engine friction to reduce wear and extend your vehicle’s lifespan.
MAXIMIZE FUEL EFFICIENCY - Keeps fuel intake spotless, helping you save gas and boost MPG on every drive.
DEEP CLEAN YOUR FUEL SYSTEM - Advanced PEA & PIBA detergents remove harmful deposits for peak engine health.
TRUSTED PERFORMANCE UPGRADE - Used by drivers with 200k+ miles to restore smooth running and clear engine codes.

STP Ultra 5 in 1 Fuel System Cleaner is a 12 fl oz liquid treatment that deep cleans your entire gasoline engine fuel system using a potent blend of PEA and PIBA detergents. It contains 3 times the cleaning agents compared to leading premium gasoline, effectively removing deposits and fighting engine friction to improve fuel efficiency and engine longevity. Designed for easy use, one bottle treats up to 35 gallons of fuel and is recommended every 4,000 miles to maintain optimal vehicle performance.

Specifications

ASIN	B00K5L8H1I
Best Sellers Rank	#23,347 in Automotive ( See Top 100 in Automotive ) #44 in Fuel System Cleaners
Brand	STP
Brand Name	STP
Contains Liquid Contents?	Yes
Customer Reviews	4.6 out of 5 stars 1,932 Reviews
Global Trade Identification Number	00071153174375, 10071153174372
Included Components	STP Auto Performance Aid
Item Form	Liquid
Item Type Name	Auto Performance
Item Volume	12 Fluid Ounces
Item Weight	0.2 Kilograms
Manufacturer	STP
Material Feature	Unscented
Material Features	Unscented
Material Type Free	Residue Free
Model Number	18410B
Number of Items	1
Part Number	18410B
Scent	Unscented
Size	12 Fl Oz (Pack of 1)
Special Features	Low Odor
Specific Uses For Product	engines
Surface Recommendation	Aluminum
UPC	071153174375
Unit Count	12.0 Fluid Ounces

Reviews

D**N

17.03.2026

#**E

29.03.2022

D**Y

28.12.2025

J**L

28.03.2026

F**O

19.12.2025

A**R

4.02.2026

P**T

27.08.2018

A**N

5.07.2023

E**N

12.10.2020

R**X

10.06.2020

M**N

23.12.2020

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.