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Royal Purple friction modifier?

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Old 05-03-2011, 12:08 PM
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Default Royal Purple friction modifier?
so i decided to use royal purple for my rear diff service. royal purple says it has friction modifier in it? do i need to still add a seperate friction modifier? thanks mike
 
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Old 05-03-2011, 01:12 PM
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I hope the answer to this is NO.. because I did my diff's with royal purple too..
 
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Old 05-03-2011, 01:15 PM
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I put the RP in and still used a friction modifier.
 
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Old 05-03-2011, 02:17 PM
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You can but it is not necessary.
 
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Old 05-03-2011, 03:26 PM
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I would NOT put an additional friction modifier in with the RP, unless it started to chatter on you, then I'd add it in half bottle increments to see if shuts up...
 
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Old 05-04-2011, 01:41 AM
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it does not chatter, but does groan once in awhile when starting from a stop.
 
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Old 05-04-2011, 11:08 AM
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oh random, usually tends to do this when it is colder.
 
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