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  #1  
Old April 25th, 2016, 11:29 PM
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Chris tidwell
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Gear Oil Recommendations

I am changing the Pinion Seal on my defender 110 front differential so I'm going to change the gear oil in both Diffs while I am it. I can't find the Manufacturer recommended SAE 90 in my local auto parts store. Lots of variations of 75W-90 and 80-140, etc. Can anyone recommend a good gear oil for this job?

First time tacking this job....so any techniques, "gotchas", or lessons learned would be greatly appreciated.

Thanks for the inputs!
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  #2  
Old April 25th, 2016, 11:40 PM
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John B.
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EP90 in the manual means xW90 gear oil. Anything will be fine. These are simple axles and nothing wears out of the oil is kept clean.

Pinion seal is simple. Make sure the flange seal surface is not damaged.
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Old April 25th, 2016, 11:43 PM
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Jason Lavender
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I go with the Lucas 80W90 for diffs/tcase/swivel balls generally.
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  #4  
Old April 26th, 2016, 12:24 PM
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Chris tidwell
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Thanks for all the replies. I will go with the Lucas Oil recommendation. I have ordered a flange, just in case. Thanks for all the help
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Old April 26th, 2016, 12:36 PM
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I use Genuine gear lube because it is cheap. At one point it was around $5 a quart my price, so retail was probably around $10.
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Old April 26th, 2016, 04:09 PM
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Jason England
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Quote:
Originally Posted by Jymmiejamz View Post
I use Genuine gear lube because it is cheap. At one point it was around $5 a quart my price, so retail was probably around $100.
Fixed it for you
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Old April 26th, 2016, 04:26 PM
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I do not have a Defender yet, but have had great luck with Motul fluids in the past. Specifically the Gear 300
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Old April 26th, 2016, 06:05 PM
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Chris
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Quote:
Originally Posted by st0k3d View Post
I do not have a Defender yet, but have had great luck with Motul fluids in the past. Specifically the Gear 300
Never heard of them. Quite happy with the 75-90et gear old at local store. If you want to get fancy, use synthetic.
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Old April 26th, 2016, 06:16 PM
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Mike Ferguson
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Motul is one of the ester based synthetics. As such it is pretty exotic for these diffs. I do use synthetics lube, but typically simply Mobil 1 (PAO based), but even dyno oil will be fine.
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Old April 26th, 2016, 07:02 PM
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John B.
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Seriously anything will be fine. I've never heard of any wear inside a Rover axle unless the oil gets dirty. Using anything expensive is a complete waste of money.
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  #11  
Old April 26th, 2016, 07:17 PM
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Seriously anything will be fine. I've never heard of any wear inside a Rover axle unless the oil gets dirty. Using anything expensive is a complete waste of money.
I don't think it matters at all as long as something is in there. I only have ever seen failures due to them running dry.
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  #12  
Old April 26th, 2016, 08:16 PM
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John B.
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Buy 5 gallon pails of cheap 80W90 and be happy.
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