Hi, I know this has been asked already but is this safe to use on a motorbike?

Hi yes. I use it on my old Norton. Works wonders but don't use the whole bottle

Will this restore old petroleum in my boat fuel tank

Don't know about boat, but my husband said it was great in the car. Hope this helps a bit

Can I use both the 5 in 1 cleaner and injection cleaner in one full tank?

You could but I wouldn't. Both products have properties that help clean various parts from the Fuel Tank to the Combustion chamber. In fact the description of both products show 1-2 identical properties. Just use one and then the other after doing a the guide line of 3-4 thousand miles.

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STP Petrol Fuel System Cleaner 400ml

Product ID: 47954805

Details

Brand
STP
Item form
Liquid
Item volume
400
Item weight
400 Grams
Material feature
Non-Toxic
Number of items
1

⛽400ml concentrated fuel system cleaner

📉improves fuel economy & reduces emissions

⚙️cleans injectors & intake valves

80.98 DT

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Description

⛽ Clean fuel, cleaner ride, smarter drive.

ECO FRIENDLY DRIVE - Lowers harmful emissions and engine knocking for a cleaner ride
EFFORTLESS MAINTENANCE - Just pour before refueling—compatible with most petrol cars
FUEL EFFICIENCY BOOSTER - Optimizes combustion to stretch every drop of petrol further
COMPLETE FUEL SYSTEM DETOX - Advanced formula targets injectors, valves & fuel lines for peak engine health
POWER PERFORMANCE REVIVAL - Eliminates deposits that drag down acceleration and throttle response

STP Petrol Fuel System Cleaner is a 400ml concentrated additive designed to clean and condition your petrol engine’s entire fuel system. It removes harmful deposits from injectors and intake valves, restoring engine power, improving fuel economy, and reducing emissions. Easy to use and compatible with most petrol vehicles, it ensures smoother performance and a more efficient drive.

Specifications

ASIN	B00BPUYPB4
Best Sellers Rank	75 in Automotive ( See Top 100 in Automotive ) 4 in Fuel Systems
Brand	STP
Customer Reviews	4.5 4.5 out of 5 stars (797)
Date First Available	6 Feb. 2013
Delivery information	We cannot deliver certain products outside mainland UK ( Details ). We will only be able to confirm if this product can be delivered to your chosen address when you enter your delivery address at checkout.
Guaranteed software updates until	unknown
Item Weight	400 g
Item model number	ST50400EN
Manufacturer	STP
Manufacturer part number	ST50400EN
Model	ST50400EN
Product Dimensions	35.35 x 16.73 x 7.13 cm; 400 g
Special Features	Concentrated

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80.98 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Tunisia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ravi S.

I loved the variety of products available. Will definitely shop again.

2 months ago

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

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