TRS drain screws
 

Do TRS outdrive gear oil drain screws have a gasket or o-ring? I just changed the fluid on my 90TG and neither the upper or lower drain screws had a gasket or o-ring but did have some permatex type sealant applied to the threads.

Mine do not have any gasket or o-ring.

I like the o ring, the gasket ones can fall off and not catch it then leak....