Will one bottle be enough to treat my 1.8 diesel engine

One is enough, but make sure you add it to a full tank of diesel, does the job!

Does this help with rough idle in Astra 2011 Model?

It can do dependant on what the issue is, might be worth using something a little stronger like coma magic, or STP ultra

What's the difference between this and the standard STP diesel injector cleaner

This is apparently more concentrated for higher mileage cars

Do i have to put this is every time i fill up or just a one off?

It lasts for approximately 4000 miles

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🚗 Rev up your engine's performance with STP!

UK MADE QUALITY - Proudly manufactured in the UK, ensuring top-notch standards.
REVITALIZE YOUR RIDE - Experience restored power and acceleration for a smoother drive.
USER FRIENDLY DESIGN - Easy-to-use injector spout for hassle-free application.
FUEL EFFICIENCY BOOST - Enhances fuel economy, saving you money at the pump.
COMPREHENSIVE CLEANING - Cleans and conditions the entire fuel delivery system for optimal performance.

STP Diesel High Mileage Injector Cleaner is a concentrated 200ml formula designed specifically for high-mileage diesel engines. It effectively cleans and protects the entire fuel delivery system, enhancing fuel economy and restoring power for a smoother driving experience. Made in the UK, this product is easy to use and ensures your vehicle runs at its best.

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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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Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

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Manufacturer	Spectrum Brands Limited
Brand	STP
Product Dimensions	4.3 x 6.04 x 21.7 cm; 207 g
Item model number	GST25200EN
Manufacturer part number	GST25200EN
Special Features	Concentrated
Item Weight	207 g

STP Diesel High Milage Injector Cleaner 200 ml, Cleans and Protects your Engine for 300 miles, Enhances Fuel Economy, Mechanical Car Cleaning Products, Concentrated Cleaning Formula, Made in the UK

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