I went to flush my power steering last weekend and made the mistake of putting in regular PS fluid instead of ATF fluid. My pump started to whine really bad so I flushed out the synthetic stuff with Type F ATF. The pump still whined a bit so I decided to buy a new pump. I purchased a Cardone pump with a lifetime wrty. We installed and it seems that it still makes the same noise????? Im pretty sure that we got at least 90% of the other fluid out. The pump instructions state that there is a break in period and that it may make noise for the first 500 miles. Has anyone replaced their pump with this brand and experienced the same thing?????