unleaded
US /ʌnˈled.ɪd/
UK /ʌnˈled.ɪd/

1.
unleaded gasoline or petrol
:
•
I need to fill up my car with unleaded.
•
The price of unleaded has gone up again.
1.
not containing lead, especially as an additive to petrol
:
•
This car runs only on unleaded fuel.
•
We only sell unleaded gasoline at this station.