I had a massive oil leak from the rocker cover gasket last weekend. I had replaced a worn leaking one with a new old stock one. I think it must have been a new very very old stock gasket! It lasted less the 3 miles before it split. Within a 15 minute drive I'd deposited about 2 litres of oil along some country lanes. I've now replaced it with a Cork one and 25 miles later no leaks.
Fingers crossed!
Sent from my D5803 using Tapatalk