Personal verification
Turn fill-up records into something meaningful
Use your own distance, fuel economy, fuel price and assumed percentage change. The calculator shows arithmetic scenarios - not a predicted or guaranteed CarPills result.
Fuel, CarPills and savings calculator
Use your own driving, fuel and pack-price figures. One tablet treats up to 40 litres. The result is an illustrative scenario, not a prediction or guarantee.
The preset CarPills prices are the current GBP prices shown by the connected shop. Enter your fuel price in GBP too, or change both the currency and CarPills price to equivalent local-currency figures. Checkout remains authoritative.
Potential engine-care value - kept separate from the money figure
- Cleaner support for petrol and diesel fuel-delivery and injection systems.
- Fuel-stability and antioxidant support.
- Combustion support, with a friction and lubricity role that can be especially relevant to diesel fuel systems.
These are intended formulation roles, not guaranteed maintenance savings. The available laboratory report measured diesel fuel properties, including cetane number; it did not test vehicle fuel economy, emissions or maintenance costs. Actual outcomes vary.
Establish a baseline
Use several fill-ups before treatment and record actual fuel added, distance, route and relevant conditions.
Compare like with like
Avoid treating one unusually short, cold, congested or heavily loaded journey as representative.
Separate fact from experience
Your records describe your vehicle. The diesel laboratory analysis measured fuel properties, not vehicle MPG.
Ready to test the routine for yourself?
Start with a suitable pack, use the measured dose and keep the comparison simple.
