A variable volume ratio screw compressor operable at a high volume ratio and operable at a low volume ratio, comprising: a suction inlet that receives a working fluid to be compressed; a compression mechanism fluidly connected to the suction inlet that compresses the working fluid; a discharge outlet fluidly connected to the compression mechanism that outputs the working fluid following compression by the compression mechanism; and a slide valve , wherein the slide valve is movable between a first position and a second position, the slide valve being in the first position when operating at the high volume ratio and the slide valve being in the second position when operating at the low volume ratio, the slide valve including a plurality of lubricant passageways including: a first lubricant passageway selected to provide lubricant when operating at the high volume ratio, the first lubricant passageway aligned with an outlet for the lubricant source in the first position, and a second lubricant passageway selected to provide lubricant when operating at the low volume ratio, the second lubricant passageway aligned with the outlet for the lubricant source in the second position, characterized in that the first lubricant passageway and the second lubricant passageway have different sizes and that the first lubricant passageway and the second lubricant passageway are selectively connected to a lubricant source . a suction inlet that receives a working fluid to be compressed; a compression mechanism fluidly connected to the suction inlet that compresses the working fluid; a discharge outlet fluidly connected to the compression mechanism that outputs the working fluid following compression by the compression mechanism; and a slide valve , wherein the slide valve is movable between a first position and a second position, the slide valve being in the first position when operating at the high volume ratio and the slide valve being in the second position when operating at the low volume ratio, the slide valve including a plurality of lubricant passageways including: a first lubricant passageway selected to provide lubricant when operating at the high volume ratio, the first lubricant passageway aligned with an outlet for the lubricant source in the first position, and a second lubricant passageway selected to provide lubricant when operating at the low volume ratio, the second lubricant passageway aligned with the outlet for the lubricant source in the second position, characterized in that the first lubricant passageway and the second lubricant passageway have different sizes and that the first lubricant passageway and the second lubricant passageway are selectively connected to a lubricant source . a first lubricant passageway selected to provide lubricant when operating at the high volume ratio, the first lubricant passageway aligned with an outlet for the lubricant source in the first position, and a second lubricant passageway selected to provide lubricant when operating at the low volume ratio, the second lubricant passageway aligned with the outlet for the lubricant source in the second position, characterized in that the first lubricant passageway and the second lubricant passageway have different sizes and that the first lubricant passageway and the second lubricant passageway are selectively connected to a lubricant source . <EOS>