As a first step I recommend that you check the crankcase ventilation duct, it is probably covered with carbon and is generating pressure inside the crankcase which generates this loss of oil. Once you complete this task, clean the entire area well, there is no oil left to verify if the oil is actually passing through the distributor seal, you will be told that 90% of the distributors carry a single seal and to know the measure is necessary to remove the distributor. For this task I recommend that you wait because if you take one out afterwards it will not start because you will not put it in the same position. Wait to see what happens with the first proposal, if you follow the loss let me know and I will tell you step by step how to do it so that later you start without problems