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Old 01-09-2007
crawly1025's Avatar
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Join Date: Jul 2005
Location: Steubenville Ohio
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gear oil question

My truck calls for 80W-90 in the front and back. Can I run synthetic or would that have a negative effect on the limited slip?
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Old 01-09-2007
Join Date: Oct 2005
Location: Havre De Grace,Md
Posts: 3,262
Originally Posted by crawly1025
My truck calls for 80W-90 in the front and back. Can I run synthetic or would that have a negative effect on the limited slip?
I didnt run Synthetic in mine. it feels fine. but again, thats what i did. Changed mine, mid last year.

edit, forgot about the new axle i put on after the wreck, um back in july.
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Old 01-09-2007
zabeard's Avatar
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Location: IN
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i run Lucas in both front and rear. no issues here. also with the Lucas you don't need to run an additive for the LS, same with amsoil.
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Old 01-10-2007
20014x4edge's Avatar
Join Date: Jun 2006
Location: cathedral city ca.
Posts: 35
i just got my tranny serviced and new clutch , and when i ask about fluid,, they said ATF and even wrote it on trannny for mechanicmm on tranny and on gear box,.

said the components inside are aluminium and neeed thinner fluid than gear oil.

just my 2 cents, and i hope it was right,,lol
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