do not run the engine until you fix it. the gas washes out the bearings, heat builds up and STOP. seized engine.
i'm pretty sure that you have the same leak that i had. the intake seal, back of the engine, intake to block gets dryed out or with a bad PCV system, blows out from over pressure. the oil leaks down the bell housing to the filter. it also gets on the flywheel and oil pan making it look like a rear main.
between the oil crud on the plugs and the seal---definately change the PCV valv (i think they're $2.00) and clean out the line to the carb. worst case you might have to pull the valve covers and clean the baffles also.
i'm pretty sure that you have the same leak that i had. the intake seal, back of the engine, intake to block gets dryed out or with a bad PCV system, blows out from over pressure. the oil leaks down the bell housing to the filter. it also gets on the flywheel and oil pan making it look like a rear main.
between the oil crud on the plugs and the seal---definately change the PCV valv (i think they're $2.00) and clean out the line to the carb. worst case you might have to pull the valve covers and clean the baffles also.