4. The categories of fuels contemplated in the first paragraph of section 2 are(a) regular leaded gasoline;
(b) high-octane leaded gasoline, comprising all categories of leaded gasoline other than regular leaded gasoline;
(c) regular unleaded gasoline;
(d) high-octane unleaded gasoline; and
(e) fuel oil.
When benzol, a mixture of benzol with another substance, propane gas, butane gas or liquified petroleum gas is sold as gasoline, it is deemed to be regular leaded gasoline.
1972, c. 30, s. 4; 1980, c. 14, s. 1.