Ok I don't own a Seat diesel at this time but mine's VAG so I guess that counts. I always let mine cool down for around 30 seconds if I've been driving economically or between one and three minutes if I've been driving harder.
What woke me up to this was when I installed the turbo timer in my 200SX (ok you got me, I know that's a petrol but it's the same principle) - that gave me a great insight into how long turbos need to safely cool down. I drove somewhere in a hurry once and through plenty of sharp acceleration to national speed limit speeds (not exceeding) got the timer up to something in the region of six minutes!
What woke me up to this was when I installed the turbo timer in my 200SX (ok you got me, I know that's a petrol but it's the same principle) - that gave me a great insight into how long turbos need to safely cool down. I drove somewhere in a hurry once and through plenty of sharp acceleration to national speed limit speeds (not exceeding) got the timer up to something in the region of six minutes!