My Potenziata V6 is currently having the rack rebuilt by the specialists here in Adelaide and when I spoke to the mechanic who was re-installing it he said that the seals had all deteriorated and that it will eventually happen again because the exhaust system runs very close to the rack and would heat it up. The guy has over 40 years experience. Now the thing is that this is the first time I have heard of that theory. The rack in my car was supposedly reconditioned by someone in Melbourne about 15,000 km before I bought the car and it was leaking then. I have the receipt from that job as I did for the engine and that was a shonky job, so the rack probably was as well. It seems to me that normally these racks last quite a long time before they start leaking. Our other 75 V6 has done 160,000 km and the rack is fine at present. I don't know if it has ever been re-conditioned. What do you guys think of the exhaust theory? If it is a potential problem do you think the exhaust could be wrapped as an extra precaution?