Literally, this translates to “she likes gasoline”. However, in Puerto Rican slang, “gasolina” is slang for “sperm”, so my guess would be she likes swallowing…

To appease old honkeys like John McCain, Daddy Yankee had to pretend that “gasolina” merely means the girl likes to party hard (“gasolina” fuels her metaphorical “party car,” see?). But seriously, she loves jizz
Suggestions
In Puerto Rico, when you refer to “gasolina” it means that what you want is more alcohol, no more sperm