Our 1986 245 has developed a strong rattle under very high load. Really, it only happens around 40-45 mph up a fairly steep hill. We have had this car for the last 50,000 miles or so (six years, it currently has 173,000 miles on it). During our ownership it has always had the highest octane gas, and regular oil changes. No leaks of any kind. The rattling doesn't affect drivability at all. It doesn't sap the power. Hasn't affected gas mileage. It stops immediately at slower speeds. Actually sounds like metal is loose, but we can't figure out exactly where it is coming from, and it is hard to simulate the problem on stands :). Does this sound familiar? Thanks.
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86 240 DL/ 94 850 GLT
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