Or just get a tube of exhaust gunk from halfords

(the expandy stuff), pop the joint apart, apply a little bead of it, making sure it won't squish

'into' the exhaust.

.

Do up, drive, seal

(I wouldn't use this stuff

'upstream' of the turbo, but as long as we're talking downpipe->exhaust joint, it'll be fine)

Just don't leave it in your toolbox if your toolbox gets hot, or the tube explodes and.

.

well.

.

it's quite messy
