Rear LS Differential Gear Oil (used appearance) - Page 2 - Diesel Forum -
Other Technical Questions Discussion of other technical topics. Please see the sticky post at the top of the thread listing for specific rules. The rules for this forum are more restrictive than they have been in the past.

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post #16 of 16 (permalink) Old 05-27-2018, 10:53 AM
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I've wasted my adult life away overhauling everything from Eaton 2 speeds to many tandem axle semi differentials and never drained the oil where the last few drips didn't look like fine metallic paint particles---it's normal with mileage and age. Same with a manual transmission. And if a magnetic drain plug is used, it will always have some metallic "fuzz" stuck to it. Since Ford in their infinite wisdom didn't spec a drain plug in the axle housing, after pulling the back cover to completely drain gear oil it's a good idea to drill and tap a 3/8 or 1/2 pipe plug hole in the bottom of the housing and use a magnetic drain plug for in the future.

Heavy truck and diesel mechanic (thankfully retired after 30+ yrs)
'91 F-250 SC 4X4, 5spd. ATS Turbo, 3:55 diff.
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