| Table 3 | Maximum Lead Level in Gasoline in Thailand |
|---|
| gram/liter | |||||
| Before 1983 | 1983 | 1989 | 1992 | 1993 | |
| Premium (95 RON) | 0.840 | 0.450 | 0.400 | 0.150 | 0.150 |
| Regular (83/87RON) | 0.840 | 0.450 | 0.400 | 0.150 | 0.150 |
| Unleaded Premium (95 RON) | - | - | - | - | 0.013* |
* Available on a voluntary basis since May 1, 1991.