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1961 - 1966 F-100 & Larger F-Series Trucks Discuss the Slick Sixties Ford Truck

Transmission sludge

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Old Jan 2, 2015 | 06:46 PM
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ige1963's Avatar
ige1963
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Transmission sludge

Upon draining transmission oil to do a clutch job I noticed that the oil had a medium brown color - I doubt that is how it should be and might actually be the same oil they put in it off the assembly line.

Of course I will replace it but my question is this: guessing there might be some sludge that didn't drain, should I flush out the tranny with anything? What would be best.
 
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Old Jan 2, 2015 | 07:41 PM
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jmf66's Avatar
jmf66
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I would just change it, drive it a while and change it again. Use the right oil of course... there's a debate about not using GL5 in our GL4 rated transmissions.
 
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