Bought new Maghytec cover for rear, quick question - Ford Powerstroke Diesel Forum
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post #1 of 2 Old 08-23-2011, 03:56 PM Thread Starter
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Bought new Maghytec cover for rear, quick question

I have an 06 XLT F250 with the Sterling 10.5, Just got the cover, 6 qts of Amsoil 74/140, but want to know if i need XL3 modifier, is there anyway to tell if its limited slip w/o poppin the cover? I know the axle ratio is 3.73 by Oasis report i have...any thoughts, would like to order tonight thanks
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post #2 of 2 Old 08-23-2011, 07:41 PM
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I used Valvoline which clearly stated no friction modifier required unless chatter? occurred. Give Amsoil website a look, it should say whether or not you need to add it.
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