I want to ellaborate on my car problem, it has 82000 miles maintained as manual

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states. This noise sounds like? bearings that are rusty not an overwhelming loudness except it doesbecome more distinct when car is hot. Temp gauge hasn't shown car being hot, haven't lost fluids; but parked on an incline for several min. yesterday started sounding ROUGH, so I changed cars position and that slipping loud noise was gone. It doesn't corolate with a/c, speed..rpm fluct.6-8 idiolling. The belt was removed, pulleys turned by hand, but like I said he wasn't able to isolate were it was coming from...the metal turning noise. Appreciate your prodding for more info maybe this will help. I've stopped in shop 5-6 times more recently, but in the start sometimes the noise wasn't really audiable..more so now.. And of course I just had to get a remark about a lazy mech. Like I'd mentioned I trust them not to gouge me, or repair things unneccessarilly. I've had to be responsible for my auto maint. 15+ yr. A Ford dealership is a rip diagnostics won't help, so please keep those commentsto yourself.He's checked it several times without charge ,