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 Complete Fuel System Cleaner Petrol 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

🌿reduces emissions & engine knock

⚙️cleans injectors & intake valves

1147688₫

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Description

⛽ Unlock your engine’s hidden potential—clean, efficient, unstoppable!

EFFORTLESS MAINTENANCE - Just pour before refueling—compatible with most petrol cars for hassle-free use.
DRIVE FURTHER SPEND LESS - Optimizes fuel combustion to boost MPG and save on every tank.
SMOOTH OPERATOR GUARANTEED - Reduces rough idling and engine knocking for seamless responsiveness.
BREATHE EASIER DRIVE CLEANER - Lowers harmful exhaust emissions for a greener ride.
REVIVE YOUR ENGINES HEARTBEAT - Advanced formula clears stubborn deposits for peak power and acceleration.

STP Complete Fuel System Cleaner Petrol 400ml is a concentrated additive designed to clean the entire petrol fuel system, including injectors and intake valves. It restores engine performance by removing deposits that reduce power and fuel efficiency, improves MPG, lowers emissions, and reduces engine knocking. Easy to use by simply adding to the fuel tank before refueling, it’s compatible with most petrol vehicles.

Specifications

ASIN	B00BPUYPB4
Best Sellers Rank	130 in Automotive ( See Top 100 in Automotive ) 6 in Fuel Systems
Brand	STP
Customer Reviews	4.5 4.5 out of 5 stars (795)
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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1147688₫

Duties & taxes included

In stock

Sold byAmazon VietnamDelivered 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 Vietnam.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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3 days ago

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