Gear Oil

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Jan 5, 2009 | 11:23 PM

Nick_Rapitis

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From: 20 minutes east of Cleveland

Gear Oil

do we have to change it? if we do how often? how much would i need if i do have to change it? thanks guys

Jan 5, 2009 | 11:39 PM

Nick_Rapitis

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also where can i find the gm posi stuff? will autozone carry it?

Jan 6, 2009 | 12:18 AM

PSU 98

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From: Schuylkill County PA

I used just over two quarts of Royal Purple 75W90. It claims you don't need to use the posi additive since it has some type of additive in it.

Jan 6, 2009 | 08:38 AM

socmguy

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I would buy the GM friction modifier. You can get it at any dealership and it is only $5.
Changing your gear oil every 10-20K miles is not a bad idea to keep it alive.

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