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Old 10-07-2004, 05:43   #1 (permalink)
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Wrong Diff Oil in Rear Axle EF Fairmont?

Hi all,
I've just changed the diff oil in my EF Fairmont.Only thing is I've used 85w-140 viscosity instead of 80w-90 ,as specified by Ford.Is this going to be a problem ,or should I dump the oil and start again with the correct grade.I do not have L.S.D.
Also what brand oil is recommended for this model.
Any comments would be appreciated.
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Old 10-07-2004, 05:56   #2 (permalink)
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Re: Wrong Diff Oil in Rear Axle EF Fairmont?

that oil should be fine especially if its got a few ks on it...how many ks are on it btw?
im pretty sure my tranny/driveline rebuilder mate uses that grade in most of the diffs and gearboxes that come into his shop mainly the heavy duty/4WD applications.
He uses pennzoil everything. in my opinion, theyre absolutley one of the best brands known around

i cant see a problem i would think it would better 4 it if anything.

out of the common brands good the better ones i know include pennzoil, penrite, mobil and shell. any other ones i forgot people?
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Old 10-07-2004, 06:12   #3 (permalink)
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Re: Wrong Diff Oil in Rear Axle EF Fairmont?

Car has done 190,000k's and i have used Penrite oil
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Old 10-07-2004, 06:25   #4 (permalink)
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Re: Wrong Diff Oil in Rear Axle EF Fairmont?

Quote:
Originally Posted by jb71
Car has done 190,000k's and i have used Penrite oil
that grade oil would suit it fine id say

and is there a reason why u think its the wrong diff oil? or just makin sure...

how does it feel when driving?
no more noise than usual?
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