It　has　recently　been　shown　that　in　one-dimensional　hard-point　gases,　there　is　a　mechanism　that　induces　negative　differential　thermal　resistance　(NDTR)　between　heat　baths.　We　examine　this　mechanism　in　more　general　higher-dimensional　fluids　described　by　multiparticle　collision　dynamics.　We　consider　fluids　in　a　finite　cuboid　region　of　three-dimensional　space　with　each　end　in　contact　with　a　heat　bath.　Based　on　analytical　results　and　numerical　models,　we　find　that　the　mechanism　underlying　NDTR　also　works　for　high-dimensional　fluidic　systems　with　weak　interactions　and　is　very　robust　to　mixed　fluids.　Our　results　significantly　advance　knowledge　of　NDTR　induced　by　heat　baths　and　illuminate　different　directions　to　explore　in　fabricating　fluid　thermal　transistors　in　micro-　and　nanosystems.　©　2022　authors.　Published　by　the　American　Physical　Society.　Published　by　the　American　Physical　Society　under　the　terms　of　the　Creative　Commons　Attribution　4.0　International　license.　Further　distribution　of　this　work　must　maintain　attribution　to　the　author(s)　and　the　published　article＇s　title,　journal　citation,　and　DOI.