5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

do our diffs need additive?

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Old 11-25-2006, 06:49 PM
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HACKGT350
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Default do our diffs need additive?

do our diffs need an additive? my buddies 78 vette needed it for the posi and if it wasnt in there it would grind and squeal something nasty
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Old 11-25-2006, 06:51 PM
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primetime5.0
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Default RE: do our diffs need additive?

the parts sell a limited slip additive it would be a good thing to put in there
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Old 11-25-2006, 06:57 PM
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HACKGT350
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Default RE: do our diffs need additive?

ok sounds good
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Old 11-25-2006, 07:50 PM
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ZachW04Stang
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Default RE: do our diffs need additive?

Your supposed to use a friction modifier to keep the clutches from sticking in the diff.
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Old 11-25-2006, 07:51 PM
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primetime5.0
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Default RE: do our diffs need additive?

ORIGINAL: primetime5.0

the parts store sell a limited slip additive it would be a good thing to put in there
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Old 11-25-2006, 07:52 PM
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HACKGT350
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Default RE: do our diffs need additive?

ok cool just wanted to make sure before i changed the fluid
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Old 11-25-2006, 08:29 PM
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BraMas
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Default RE: do our diffs need additive?

If you switch to Royal Purple you do not have to add the 7oz of friction modifer.
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