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'67 Dart 270
 Post subject: gear oil
PostPosted: Fri Sep 12, 2014 4:31 pm 
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Turbo EFI
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Joined: Wed Nov 23, 2011 11:07 am
Posts: 2132
Location: SF Bay Area
Car Model: 67 dart 2 door hardtop
I have switched to 8.75, power lok clutch type posi, is this gear oil OK?

http://www.redlineoil.com/product.aspx?pid=44&pcid=4

A racing buddy of mine suggested this is a really good gear oil for rearend, but I wanted to know if anyone here uses it or has a recommendation for rearend oil type/brand.

thanks,

Brian

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Joshie225
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PostPosted: Fri Sep 12, 2014 8:39 pm 
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Supercharged
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Location: Portland-ish
Car Model: Fiat 500e
Heavy shock proof is way overkill for a slant 6 powered vehicle. It's meant for racing not long term road use. Use their regular 75W-90 GL5.

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Dart270
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PostPosted: Sat Sep 13, 2014 3:58 am 
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I would use whatever you can find that is good quality 75-90 or 80-90 gear oil (Castrol, Valvoline, Mobil...), and make sure to use an additive for the suregrip, preferably the Mopar additive. That really makes a difference in chattering and longevity of the suregrip.

Lou

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'67 Dart 270
 Post subject: Thanks, great...
PostPosted: Sat Sep 13, 2014 6:48 pm 
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Turbo EFI
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Thanks for all the advice, sounds good.

b

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'67 Dart 270
 Post subject: royal purple
PostPosted: Wed Oct 08, 2014 1:39 pm 
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Turbo EFI
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Joined: Wed Nov 23, 2011 11:07 am
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Location: SF Bay Area
Car Model: 67 dart 2 door hardtop
I went with Royal Purple (85W-140) and friction modifier. It is much quieter now, actually.

http://www.latemodelrestoration.com/ite ... fgodCC4Auw

I also installed a drain plug...

FYI,

Brian

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'67 Dart 270
 Post subject: added benefit...
PostPosted: Sat Oct 11, 2014 2:00 pm 
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Turbo EFI
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Joined: Wed Nov 23, 2011 11:07 am
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Location: SF Bay Area
Car Model: 67 dart 2 door hardtop
my slow leak in the pinion seal is now gone! I've been driving it for a few hundred miles and I see no signs of leakage whatsoever, dry as a bone. That rearend oil that I took out did seem much less viscous than the royal purple.

FYI,

Brian

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