These second polymers include (a) polymers, both homopolymers and copolymers of unsaturated alkyl ester, including copolymers with other unsaturated monomers, e.g. olefins other than ethylene, nitrogen containing monomers, etc. and (b) homopolymers and copolymers of olefins, other than ethylene.In our preferred lube oil pour depressant at least 10 wt. %, preferably at least 25 wt. % and frequently