RX8 engine warranty

I had my engine replaced in my '06 RX8 back in 2010 at about 55k. I was told by the dealer at the time that the new engine was warrantied for another 100k. He said the engine itself was warrantied above and beyond the car. At a new dealer today getting some work done and the new engine is starting to go. I asked if they would replace it since the new engine was still under 100k even though the car itself has 127k. They said no, there is only a 100k warranty period. Does anyone know if the engine itself carries the warranty or is this dealer correct? Very frustrated! Thanks, Tim

RX8 engine warranty