FLUID TYPES
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Freshman User
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FLUID TYPES
I just picked up a 1999 f350 wih the 7.3l in it dually
I was wondering what type of fluid goes in transfer case, power steering and front and rear diffs.
I wanted to change them out as all other fluids have been completed recently.
I was wondering what type of fluid goes in transfer case, power steering and front and rear diffs.
I wanted to change them out as all other fluids have been completed recently.
Senior User
Joined: May 2006
Posts: 237
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Welcome NBT,
Mercon V and 80W90 GL5 gear oil for front diff
and 85W140 synthetic for rear with two bottles of XL3
LSD additive if it is LSD and it will not hurt it if not LSD
or you are not sure. It will be hurt if LSD and additive not
installed. XL3 is stinky, be careful with it. Good fortune.
Mercon V and 80W90 GL5 gear oil for front diff
and 85W140 synthetic for rear with two bottles of XL3
LSD additive if it is LSD and it will not hurt it if not LSD
or you are not sure. It will be hurt if LSD and additive not
installed. XL3 is stinky, be careful with it. Good fortune.
Postmaster
Joined: Jan 2012
Posts: 2,693
Likes: 3
From: West of Chicago
You have a Dana 80 rear end and I believe a Dana 60 front end. The front is 80-90 and the rear is either 75-140 or 80-90.
The best fluid to use is mobil1 synthetic ATF in the transfer case and power steering.
The best fluid to use is mobil1 synthetic ATF in the transfer case and power steering.
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Freshman User
Joined: May 2014
Posts: 44
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cool thank you
How can I tell what rear end I have in it for sure dana 80 dana 135 or for 10.5 is there an easy way to figure it out
How can I tell what rear end I have in it for sure dana 80 dana 135 or for 10.5 is there an easy way to figure it out
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9 ECHO 1
Joined: Aug 2009
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From: Missouri
Its a Dana 80. 10.5 is SRW and D135 was in the 450+ trucka
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