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bigjohn
User
Jan 4, 2013, 2:07 PM
Post #1 of 3
(1364 views)
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1995 Mercury Grand Marquis, 4.6 engine, 155,000 miles What is the proper type/ viscosity of gear oil for the differential in my 1995 Mercury Grand Marquis? Big John
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Discretesignals
Ultimate Carjunky
/ Moderator
Jan 4, 2013, 3:36 PM
Post #2 of 3
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Re: Proper gear oil
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90w gear oil. If it has Trac lok, you have to add 4 oz of a friction modifier. Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Jan 4, 2013, 4:40 PM
Post #3 of 3
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Re: Proper gear oil
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To add: If not sure what differential just hoist rear wheels, car in "N" and spin one. If the other spins the opposite way it's a regular differential. If they spin the same way it has some kind of traction control and would require gear oil or additive as DS mentioned to be right, T
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