Sump pans are a wanker! Biggest mistakes people make: 1, de-grease the sump pan Lip and the lip of the block (mating surfaces) as sealant wont stick to oil. 2, don't overtighten the sump bolts, this bends the sump pan lip and pushes the sealant out the way 3, don't give the sealant long enough to set, Id leave it 24hours tbh. 4, make sure the sump pan lip is straight and flat, they bend if overtightened. Not saying you did any of these, but these engiens are a cunt for leaky sumps! Hopefully it may help if uve missed summink phil! xx