Abstract: The present invention is directed to the use of multiple cyclic nitrogen-containing alkoxylate compounds as additives in fuel compositions. The invention is also directed to the use of these multiple cyclic nitrogen-containing alkoxylate compounds for decreasing intake valve deposits, controlling octane requirement increases and reducing octane requirement. The invention is further directed to a class of multiple cyclic nitrogen-containing alkoxylate compounds.

Abstract: The present invention is directed to the use of phenyl substituted, five member aromatic amine alkoxylate compounds as additives in fuel compositions. The invention is also directed to the use of these compounds for decreasing intake valve deposits.

Abstract: The present invention is directed to the use of diphenylamine alkoxylate compounds as additives in fuel compositions. The invention is also directed to the use of these compounds for decreasing intake valve deposits.

Abstract: The present invention is directed to the use of hydantoin-containing polyether alcohols as additives in a gasoline composition. The invention is also directed to the use of these compounds for decreasing intake valve deposits, controlling octane requirement increases and reducing octane requirement. The invention is further directed to hydantoin-containing compounds.

Abstract: The present invention is directed to the use of aromatic amide-containing phenol alkoxylate compounds having a weight average molecular weight is greater than about 600 as additives in fuel compositions. The invention is also directed to the use of these compounds for decreasing intake valve deposits, controlling octane requirement and reducing octane requirement. The invention is still further directed to the aromatic amide-containing phenol alkoxylate compounds.

Abstract: The present invention is directed to the use of cyclic amide compounds containing multiple polyether alcohol backbones as additives in fuel compositions having a major amount of a mixture of hydrocarbons in the gasoline boiling range and a minor amount of one or more cyclic amide compounds containing multiple polyether backbones. The invention is also directed to the use of these cyclic amide alkoxylate compounds for decreasing intake valve deposits, controlling octane requirement increases and reducing octane requirement. The invention is further directed to cyclic amide compounds containing multiple polyether backbones.

Abstract: The present invention is directed to the use of cyclic amide alkoxylate compounds as additives in fuel compositions having a major amount of a mixture of hydrocarbons in the gasoline boiling range and a minor amount of one or more cyclic amide alkoxylate compounds of the formula: ##STR1## wherein x is from 2 to 20 and y is from 1 to 50. R.sub.1 and R.sub.2 are independently hydrogen, hydrocarbyl of 1 to 100 carbon atoms or substituted hydrocarbyl of 1 to 100 carbon atoms. R.sub.3 is hydrocarbyl of 1 to 100 carbon atoms or substituted hydrocarbyl of 1 to 100 carbon atoms and R.sub.4 is independently hydrocarbyl of 2 to 100 carbon atoms or substituted hydrocarbyl of 2 to 100 carbon atoms. R.sub.5 is hydrogen, hydrocarbyl of 1 to 100 carbon atoms, or substituted hydrocarbyl of 1 to 100 carbon atoms or acyl of 1 to 20 carbon atoms.