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  #1  
Old June 11th, 2007, 07:09 PM
J.5
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Joe Zinter
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Synthetic Gear Oil

I just rebuilt Disco I front and rear axles for my project truck... and I'd like to try a synthetic gear oil in the diffs. Any suggestions on a good synthetic? brand and weight? Thanks.
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  #2  
Old June 11th, 2007, 08:15 PM
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Peter Sherman
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one of the big 3 amsoil royal purple redline. 75 90
I use rp cuz napa has it & I get a pretty good deal & its delivered
but I am a prick & don't know shit!
M1 is good as well. If you change it offen because of wet wheeling use dino its fine too.
If you do a search I am sure you'll have a few hours of reading........
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Old June 12th, 2007, 08:37 AM
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Scott T
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Quote:
Originally Posted by J.5
I just rebuilt Disco I front and rear axles for my project truck... and I'd like to try a synthetic gear oil in the diffs. Any suggestions on a good synthetic? brand and weight? Thanks.
I'm a Redline user, but there are other good Synthetics out there. I've heard some bad things about Mobil One's gear oils, and their additive packages being a bit weak, but no personal experience, so take it with a grain of salt.

This is something else you may want to consider. I don't know what you changed when you rebuilt the diffs, but when I had ARB's put in another truck, the driveline shop recommended running dino 80W140 for the first 500-1,000 miles (before switching to synthetic) to make sure new parts would break in properly.
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Old June 13th, 2007, 01:48 PM
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Tyler
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I've never had a problem with Mobil one in my diffs.
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