It depends. If it’s an old-school diesel engine it would mostly work just fine. If it’s a up to date efficiency diesel (most likely) a bit should be alright for a little while, but it won’t run great. If it’s a gasoline engine it won’t run at all till the fuel system has been fully flushed out.
Isn’t this like…not a good idea? I don’t know enough about engines to be sure though.
It depends. If it’s an old-school diesel engine it would mostly work just fine. If it’s a up to date efficiency diesel (most likely) a bit should be alright for a little while, but it won’t run great. If it’s a gasoline engine it won’t run at all till the fuel system has been fully flushed out.