[Crvett69]

warm engines wear less and not just on start up. if you have even taken apart a engine and checked the engine bores the outside cylinders always have more wear than the middle cylinders because they run a little cooler. its especially easy to notice on V8 engines. as far as gear oil i use 85w90 in all the metro transmissions i work on and so far none have failed and they still shift the same. as far as rebuilding them its about $150 for the kit on e-bay. if you want a used JDM one with a warrenty i can probably get you one for about that price