I wonder if anyone has advice. I have a sr5 v6 94 4runner, auto, and there is coolant in the engine. so yota says replace the engine, and my mechanic can do it all for 2500 cdn, but put a v6 w/ 200 k into the truck. what should I look for in a used engine to be sure Im not gonna be right back where I am right now in a month or two? Any advice would help.