Oil leak sump tank
I have an oil leak, nothing major but it's making enough marks on my drive to annoy me. After taking the 156 2.4 JTD to have the tracking done, whilst up on the ramps we took a look and it seems someone has tried welding the sump to fix the leak, but it didn't work. With it being an oldish car is it worth trying welding again or a new sump?
Also I've seen some stuff in Halfords which repairs sumps, but would it stick if it's covered in oil?
Thoughts would be appreciated. thanks
Just to add, I had to stop today as the car was making a loud noise, so put some more oil in it, the only oil I could get was 15/40 is this suitable?