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what rear end gear oil to use #1871803 07/16/15 08:12 PM 07/16/15 08:12 PM
Joined: Aug 2003 Posts: 275 Oakwood Ont Canada 340mouse OP enthusiast
340mouse OP enthusiast Joined: Aug 2003 Posts: 275 Oakwood Ont Canada	changing the rear pot on the Cuda, what gear oil should I use, also it bunny hops around corners(what friction modifier should I use. Thanks Dave

Re: what rear end gear oil to use [Re: 340mouse] #1871915 07/16/15 10:13 PM 07/16/15 10:13 PM
Joined: Aug 2003 Posts: 275 Oakwood Ont Canada 340mouse OP enthusiast
340mouse OP enthusiast Joined: Aug 2003 Posts: 275 Oakwood Ont Canada	OK Let me know if this works, 80W90 2 1/2 to 3 quarts(litres up here) GM friction modifier 1 to 2 bottles 1 bottle of Havana Club Rum (for the sore back after)

Re: what rear end gear oil to use [Re: 340mouse] #1871933 07/16/15 10:29 PM 07/16/15 10:29 PM
Joined: Nov 2007 Posts: 21,831 Kirkland, Washington Pacnorthcuda Too Many Posts
Pacnorthcuda Too Many Posts Joined: Nov 2007 Posts: 21,831 Kirkland, Washington	I use 75w90. As far as the friction modifier you can't go wrong with the FORD offering at their dealerships. It's the same (or extremely similar) to what Mopar used to sell, but no longer does. Sounds like you have a power lock (clutch type) vs. a cone type, that's good.

Re: what rear end gear oil to use [Re: Pacnorthcuda] #1871976 07/16/15 10:58 PM 07/16/15 10:58 PM
Joined: Jan 2007 Posts: 7,664 IN A ahy master
ahy master A Joined: Jan 2007 Posts: 7,664 IN	80W90 or 75W90 sound good. I use the GM spec friction modifier from AZ with good results. One full tube.

Re: what rear end gear oil to use [Re: ahy] #1872049 07/17/15 12:21 AM 07/17/15 12:21 AM
Joined: Jan 2003 Posts: 1,567 Ky J jt4406 pro stock
jt4406 pro stock J Joined: Jan 2003 Posts: 1,567 Ky	Put a bottle of chrysler 4318060 additive in the dana 60 in my challenger today. Eliminated the noisy, rough feeling when turning tight curves in a parking lot. Yeah, it's hopped up to over 160...

Re: what rear end gear oil to use [Re: 340mouse] #1872594 07/17/15 10:45 PM 07/17/15 10:45 PM
Joined: Sep 2004 Posts: 6,906 IL, Aurora A ademon master
ademon master A Joined: Sep 2004 Posts: 6,906 IL, Aurora	I think doc diff recommends 85w140 conventional with the ford FM. I used Torco RGO 85w140 But I'm sure most any fluid will be fine.

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