alright, my 2000 ES was doing good with not leaking oil. then i got a leak. had it looked at and was told it was the oil sending unit causing the leak and it needed replacing. i bought the replacement, but i have never heard of this partbefore so i cannot for the life of me find the damn thing. and i cant seem to find anything about it in my Haynes manual. socan anyone explain where on the engine i can find this and/or does anyone know where i can find some kind of diagram online of this or know where to look in the haynes book incase i skimmed past it? thanks