These screenshots use sample content in a preview version of Idle. Your app may look different. Select an image to see the full screen.
Find nearby E85
- Open Search in Idle, then select Discover.
- Scroll to E85 nearby and tap Use current area.
- Allow location if your iPhone asks.
- Review nearby station options and details when available.
- Confirm station details before driving, especially availability and hours.
Station lookup covers public stations in the United States and requires a signed-in account. Availability and station details can change.
Save fuel details
- Open GarageGo to Profile > Garage > Open, choose one of your own vehicles, then scroll to Vehicle Tools and tap Fuel Type.
- Add fuel settingsChoose Fuel Type and Preferred Pump Gas. To save blend defaults, turn on Use these as calculator defaults, then enter Tank Capacity, Default Target Ethanol, Pump Gas Ethanol and Actual E85 Content. Add notes if useful, then tap Save.
- Keep it currentUpdate saved details if your setup changes.
Use the ethanol calculator
The ethanol calculator uses your inputs to estimate how much E85 and pump gas to add for a target blend. You can use saved vehicle defaults or enter values manually.
- Open Ethanol Calculator from Search > Discover or your vehicle's Vehicle Tools.
- If you want to use or save vehicle defaults, select your own vehicle first. Review the values it fills in before calculating.
- Enter Tank Capacity and Current Fuel. The current-fuel controls offer Gallons or Percent.
- Enter Current Ethanol for the fuel already in the tank.
Set the target blend and fuel sources
- Enter Target Ethanol for the blend you want.
- Choose Fill to full or Add custom amount. For a custom amount, enter Gallons to Add.
- Check Pump Gas Ethanol and Actual E85 Content against the fuel you plan to use.
- Review the Result section after entering the required values.
If Result asks for your tank, current fuel, target blend, and fuel source values, complete those inputs first.
Read the blend result
In this example, the tank holds 15.6 gallons and contains 3 gallons at 10% ethanol. With a 30% target, 10% pump gas and 70% E85 content, Fill to full gives 5.2 gallons of E85 plus 7.4 gallons of pump gas.
This explains the calculation; it is not a fuel recommendation. Only use a blend supported by your vehicle and tune.
Save defaults and check Current Fuel
With one of your own vehicles selected and a valid result shown, tap Save as Vehicle Defaults to reuse the tank capacity, target blend and fuel-source ethanol values.
Current Fuel is not saved with those defaults, so enter the amount currently in your tank each time. Check Current Ethanol against the fuel already in the tank as well. A gray number is example text in an empty field, not an entered amount.
Troubleshooting
- No E85 resultsCheck location permission, your connection, and whether nearby station data is available.
- Station details look wrongConfirm with the station before driving and send support the station name, city, and screenshot.
- Calculator result looks unexpectedCheck the tank capacity, current fuel amount, current ethanol, target ethanol and fill amount. If the target is not possible, review the minimum and maximum blend shown. Change inputs only to match the actual fuel and a blend your vehicle supports.
- Fuel profile will not saveMake sure you are editing your own garage vehicle and try again.
Use supported blends only
The calculator is a planning tool from your inputs. Only use fuel blends your vehicle, tune, and parts support.
Still need help?
Email support@idlemeets.com with your iPhone model, city, and the fuel tool or station you were using.