Roughly where is the oil dripping from?... Driver's side, passenger side? If it's the drivers side, then he's probably on the right track. Sealants vary, but some recommend a 12hr cure time before exposure to oil.
3S-FE engine, right? There is an oil pump seal on the passenger side that can sprout a big leak on the 5S-FE, which is very similar.
3S-FE engine, right? There is an oil pump seal on the passenger side that can sprout a big leak on the 5S-FE, which is very similar.