Related Clues:
- Alternative to premium
- Fuel for semis
- Fuel for big rigs
- At fixed intervals
- Everyday player
- Semi filler
- 'xXx' star Vin
- Settle in advance
- Compensate in advance
- Fuel for heavy vehicles
- .Fuel for heavy vehicles
- Steady, even
- See lid for the engine
- Recurring in a uniform manner
- Common fuel for heavy vehicles