In a 2016 Business Insider article, Stephen Ciatti, then principal mechanical engineer and internal combustion expert at Argonne National Laboratory, warned that cold engines run rich enough that the gasoline can effectively wash the motor oil off cylinder walls and piston rings, allowing accelerated wear. Note that the temperature of the engine itself must be around 40 degrees or lower, and that driving is the quickest way to warm it, according to Ciatti. 还有其他文章,都不建议。除非老车有 化油器(英語:Carburetor)才需要。