My Dad's 2005 V6 has been leaking power steering fluid for a few weeks and seems to have now run very low. He didn't seem to think it would be an issue but and planned on taking it in next week, but I went to pull it into the garage and heard a buzzing sound, especially when turning the wheel. The steering feels lighter than normal (would have expected it to be heavier..) My question is, would driving it at all ruin the pump? Also, could that Lucas leak stop fluid work in this case? I have read some about an issue where an electric connection becomes loose on the pump. Thanks for any input!