A multi-functional additive package comprising: A) 2.4 to 90% by weight of a blend of: I) at least one oxygen-containing compound comprising a polyisobutylene succinic acid or polyisobutylene succinic anhydride, II) at least one nitrogen-containing compound comprising the reaction product of a hydrocarbyl-substituted acylating agent and an amine or polyamine having from 2 to 18 carbon atoms, B) 2.5 to 90% by weight of at least one lubricity improver, wherein the lubricity improver is selected from glycerol monooleate, sorbitan monooleate, oil-soluble hydrocarbyl substituted mono- and polycarboxylic acids or the anhydrides or amides thereof, wherein the hydrocarbyl substituent has up to 24 carbon atoms, and partial esters of the oil-soluble hydrocarbyl substituted polycarboxylic acids, wherein the hydrocarbyl substituent has up to 24 carbon atoms, C) 2.5 to less than 50% by weight of at least one solvent, and D) 0.1 to 30% by weight of a compatibilizer mixture containing a mixture of a C 1-10 alcohol and a low molecular weight acylated nitrogen compound which is the reaction product of an alkyl succinic anhydride or its acid or ester derivative and an alkanolamine, wherein the C 1-10 alcohol is added at a level, not to exceed 50% by weight of the compatibilizer mixture, requisite to achieve a kinematic viscosity of the multi-functional additive package of between 10 and 60 cSt at 40°C, and less than 3000 cSt at -30°C, as measured according to ASTM D445. A) 2.4 to 90% by weight of a blend of: I) at least one oxygen-containing compound comprising a polyisobutylene succinic acid or polyisobutylene succinic anhydride, II) at least one nitrogen-containing compound comprising the reaction product of a hydrocarbyl-substituted acylating agent and an amine or polyamine having from 2 to 18 carbon atoms, I) at least one oxygen-containing compound comprising a polyisobutylene succinic acid or polyisobutylene succinic anhydride, II) at least one nitrogen-containing compound comprising the reaction product of a hydrocarbyl-substituted acylating agent and an amine or polyamine having from 2 to 18 carbon atoms, B) 2.5 to 90% by weight of at least one lubricity improver, wherein the lubricity improver is selected from glycerol monooleate, sorbitan monooleate, oil-soluble hydrocarbyl substituted mono- and polycarboxylic acids or the anhydrides or amides thereof, wherein the hydrocarbyl substituent has up to 24 carbon atoms, and partial esters of the oil-soluble hydrocarbyl substituted polycarboxylic acids, wherein the hydrocarbyl substituent has up to 24 carbon atoms, C) 2.5 to less than 50% by weight of at least one solvent, and D) 0.1 to 30% by weight of a compatibilizer mixture containing a mixture of a C 1-10 alcohol and a low molecular weight acylated nitrogen compound which is the reaction product of an alkyl succinic anhydride or its acid or ester derivative and an alkanolamine, wherein the C 1-10 alcohol is added at a level, not to exceed 50% by weight of the compatibilizer mixture, requisite to achieve a kinematic viscosity of the multi-functional additive package of between 10 and 60 cSt at 40°C, and less than 3000 cSt at -30°C, as measured according to ASTM D445.