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Re: Whirring/whining noise back again ...
Posted by Dale Kriewall [Email] (more from Dale Kriewall) on Mon, 3 Apr 2006 15:11:47
In Reply to: Whirring/whining noise back again ..., Wooglin
[Profile/Gallery]
, Tue, 10 Jan 2006 05:53:21
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I had this whirring noise on my 9-5 also (beginning at about 80K), especially for a few minutdes after cold start-up. I first thought it was a bad turbo, then became convinced it was a bearing on belt tensioner. Replaced same (180.00) , but noise continued. Then I asked my son for his opinion (he is taking auto tech in college). He used a mechanic's stethoscope and said the noise was from the timing chain. He suggested a engine purge to clean sludge from oil ports, using a special BG product that he became familiar with while working at a local euro car repair shop. We did this following can instructions, and sure enough, now 5000 miles later and still no whirring. All for $20!
I have changed oil at 4 to 5 K intervals using only synthetic oil. My wife drives the car 25 miles to work each day - almost no short trips . The purging process involves draining old oil, adding new oil + additive, and then running engine for 20 min or so until is well hot. Then draining again and refill with clean oil. Boy, was that 20 min "puige oil" nasty. I'm not sure the BG product is listed on their web site - check with a shop that uses BG products.
posted by 66.66.16...
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