There is no filter, as was said before.I installed a "Y" fitting between the block and the oil pressure sensor, and drain it while it runs, being careful to NOT let it run out of oil. Much easier, and I believe, more thorough, than trying to suck it out of the crankcase, as I did last year.
Steve Bayless 1977 Std. Rig "Liebchen" Port Huron, MI
