Offroad-Express

Hi looks like I have a front crank shaft seal leak on my 3 litre 5 L Hilux.
Any tips as to what is the easiest way to deal with it???
Can it be accessed from the front without having to pull 3/4 of the motor apart?
What about the mechanic in a can option , has anyone had any success with the seal leak additives?
Cheers

Forget that shit in a can!
Do it properly and replace the seal (if it is the seal).
Easy enough to do with the right tools.
Remove the radiator to give yourself more room.

The other common leak on them is the sump along the front and rear humps.