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SportTrac Discussion
Engine & Drivetrain
Differential service - slight whining
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<blockquote data-quote="blert" data-source="post: 1041706" data-attributes="member: 64702"><p>3.73 non-ls</p><p></p><p>Finally got around to popping the pumpkin open and changing the fluid. It is so much quieter now but I can still hear a little bit of whining when the rear window is down. It is not loud (anymore). I am assuming this is typical? Would a heavier oil quiet it down more? I used Mobil1 75w-90LS.</p><p>I used a LubeLocker gasket so have no problem opening it back up and putting in 75w-140 if it will help. Thanks.</p><p></p><p>Edit:</p><p>The old oil was nasty, almost milky. Not much on the filler plug magnet but it was caked with a white, milky sludge. As far as I know it had never been serviced before.</p></blockquote><p></p>
[QUOTE="blert, post: 1041706, member: 64702"] 3.73 non-ls Finally got around to popping the pumpkin open and changing the fluid. It is so much quieter now but I can still hear a little bit of whining when the rear window is down. It is not loud (anymore). I am assuming this is typical? Would a heavier oil quiet it down more? I used Mobil1 75w-90LS. I used a LubeLocker gasket so have no problem opening it back up and putting in 75w-140 if it will help. Thanks. Edit: The old oil was nasty, almost milky. Not much on the filler plug magnet but it was caked with a white, milky sludge. As far as I know it had never been serviced before. [/QUOTE]
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SportTrac Discussion
Engine & Drivetrain
Differential service - slight whining
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