on 8/21/07 i logged on for the first time.i have a 87 lin 302 with a bad rear engine leak.my mechanic said rear main but to coastly. my other buddy said there was a screen below the pcv . i finally found the location. i stuck a long needle nose pliers down in the hole and pulled and twisted & it came out. it"s about 1 inch high & boy was it plugged. bought a new one put it in & now " no leak" what a relief jusd thought you ghys would like to know. thanks for previous help. the original log in was:::on 8/21/07 under:re 87 oil leak thanks