the year 2005 first fluid change done at 22,000 with new suncoast valve body and deep dish mag pan and filter. All the fluid taken out and replaced with amsoil syntic. Next fluid change done by me but I only changed what was in the deep dish pan and NO filter at 55,000 mi. Now I have 70,000 . My question is would it be ok to drop the deep dish change the filter and add the 7 or 8 qt. I know changing all the fluid is the ultimate but expensive.:cool: