here wee i work we use 15w40 fully sync oil in everything new trucks , tractors , blazers, small mowers and rider mowers , you name it ,, its from schaffers , we get it by the drum ,,, i am getting my 235 rebuild totaly wounder if that would be ok for it ???



1958 chevy biscayne
235 6 cyl 1 barrel
2 speed PG tranny