# Fuel System Cleaner STP Complete System Cleaner Benzyna (MPN 504) for gasoline engines

**URL:** https://aio.lv/en/product--stp-504--12394807
**Data updated:** 2026-04-26 22:22 (EEST)
**Category:** Car Body Care
**Manufacturer:** STP
**Manufacturer code:** 504
**EAN:** 5020144808862
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

STP Complete System Cleaner Benzyna (MPN 504) is a fuel-system cleaning additive formulated for gasoline engines. It helps remove deposits from injectors, intake valves and combustion chambers to restore performance, improve throttle response and support fuel efficiency. Suitable for periodic maintenance and before emissions testing.

## Long description

STP Complete System Cleaner Benzyna is a fuel-system cleaning additive developed for gasoline engines. The formulation targets deposits that form on fuel injectors, intake ports and valves, and within combustion chambers. Regular use helps restore throttle response, supports more consistent fuel spray patterns and can contribute to improved running quality during steady driving and acceleration. The product is intended for periodic maintenance and for use prior to emissions testing or after driving conditions that promote deposit buildup.
Advantages
The cleaner works across the whole fuel system to dissolve carbon and varnish deposits on injectors, intake valves and combustion chamber surfaces. By reducing fouling it can help recover engine responsiveness and smooth idle characteristics. The additive is compatible with typical gasoline formulations and can be used in modern fuel-injection systems as part of scheduled upkeep or targeted cleaning cycles.
Подходит для
 Periodic maintenance of petrol engines
 Preparation before vehicle emissions testing
 Cleaning after long periods of idling or low-quality fuel use
 Treatments to improve throttle response and steady-state fuel consumption
When it may not be suitable
The cleaner is formulated for gasoline engines and is not intended for diesel engines, diesel particulate filter systems or engines requiring manufacturer-specific treatments. It is not a substitute for mechanical repairs: severe injector damage, clogged fuel filters or failed sensors will not be corrected by a fuel additive alone.
Key specifications
 Application type: fuel system additive for gasoline engines
 Main effects: deposit removal from injectors, intake valves and combustion chambers
 Compatibility: suitable for modern port and direct-injection petrol engines (follow vehicle manufacturer guidance)
 Intended use: periodic maintenance and pre-emissions test cleaning
 Form: liquid additive to be added to fuel
How to use
Add the recommended dose of the cleaner to the fuel tank before filling with petrol, or follow dosage instructions on the product label. Typical use is one treatment per fuel fill or one treatment per specified mileage interval as stated by the product packaging. After adding the product, drive the vehicle normally to allow the formulation to circulate through the fuel system and reach injectors, intake ports and combustion chambers.
What to consider before purchase
 Ensure the product is intended for gasoline engines and compatible with your vehicle's fuel system
 Check the recommended treatment volume relative to your fuel tank size
 Do not expect chemical cleaning to replace necessary mechanical maintenance or component replacement
Usage recommendations
Use as part of routine servicing intervals or before emissions testing. Combine with regular fuel filter checks and scheduled mechanical inspections for best results. Follow all safety instructions on the label and avoid mixing with incompatible additives.

## FAQ

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All STP products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized STP service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

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