changing the read end fluids

88stangNJ · 10-17-2002, 09:41 AM

im just wondering what i need 2 change my rear end fluid....3 quarts of gear oil and some limited slip additive? its an 88 gt conv.
thnaks again

chris91LX · 10-17-2002, 10:22 AM

You'll also need a fluid hand pump as you have to pump the oil into the top of the diff.

MDM · 10-21-2002, 11:04 AM

Your local Ford dealer has some ncie synthetic fluid, but it goes for about $17/quart. I am running it now and would recommend either it or Royal Purple, which I am sure you can get for a better deal through Summit or another mail order house. Either mail order or the dealer can also set you up with the additive. Wear some old clothes, as changing it always seems to get a bit messy with the hand pump and all.

chico · 10-21-2002, 05:32 PM

Stay away from synthetic oil for the rearend...the friction modifier doew not mix well with the synthetic..also check on your clutch pac for your posi unit..if the clutch pac plates are metal you need two tubes of friction modifier instead of one for the fiber plates.

10-17-2002, 09:41 AM	#1
88stangNJ Registered Member Join Date: Oct 2002 Location: NJ Posts: 6	changing the read end fluids im just wondering what i need 2 change my rear end fluid....3 quarts of gear oil and some limited slip additive? its an 88 gt conv. thnaks again

10-17-2002, 10:22 AM	#2
chris91LX Registered Member Join Date: Oct 1998 Location: Suburban Chicago, Hanover Park Posts: 695	You'll also need a fluid hand pump as you have to pump the oil into the top of the diff. __________________ My Ford Club http://www.midwestfords.org/ Best time N/A 12.9 @ 107 1.711 60' 125 shot - 12.04 @ 113 1.59 60'

10-21-2002, 05:32 PM	#4
chico Registered Member Join Date: Jul 2002 Location: Manteca,Ca. Posts: 114	rearend oil change Stay away from synthetic oil for the rearend...the friction modifier doew not mix well with the synthetic..also check on your clutch pac for your posi unit..if the clutch pac plates are metal you need two tubes of friction modifier instead of one for the fiber plates. __________________ 98 cobra convt. 515 rwhp 421 torque..554 rwhp on 98 octane..635 rwhp this summer

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10-21-2002, 11:04 AM	#3
MDM Registered Member Join Date: Feb 2000 Location: Flemington, NJ USA Posts: 166	Your local Ford dealer has some ncie synthetic fluid, but it goes for about $17/quart. I am running it now and would recommend either it or Royal Purple, which I am sure you can get for a better deal through Summit or another mail order house. Either mail order or the dealer can also set you up with the additive. Wear some old clothes, as changing it always seems to get a bit messy with the hand pump and all.