I'll assume you have the stone variety of mold. Short answer, no.
DON'T use any cooking variety of spray as a release agent. The plastic is hot enough to cook the oils, leaving a sticky film. Personally I use a shot of WD-40, then lay the mold half face down on a paper towel for a minute to allow any liquid to drain away from any ribbing. I'll give the mold a touch-up with WD every five or six injections. WD helps but honestly it doesn't do a ton, but its better than not treating the mold.