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Old 04-18-2013, 10:03 AM   #1  
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Default Is this oil safe to use?

Hi all, I have 3-4 year old unopened royal purple 75w90 and Mobil ATF sitting in my garage from my 91 XJ. I want to change my diffs and transfer case fluid after work but I want to confirm these are 1. not to old, 2. still the correct fluid for my 99'.

I have read mixed reviews on the type but most say unopened bottles shouldn't be a concern unless they are very old.

Cheers
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Old 04-18-2013, 11:41 AM   #2  
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Default Re: Is this oil safe to use?

Quote:
Originally Posted by CTSHIRT View Post
Hi all, I have 3-4 year old unopened royal purple 75w90 and Mobil ATF sitting in my garage from my 91 XJ. I want to change my diffs and transfer case fluid after work but I want to confirm these are 1. not to old, 2. still the correct fluid for my 99'.

I have read mixed reviews on the type but most say unopened bottles shouldn't be a concern unless they are very old.

Cheers
From what I read oil doesn't go bad if it's not exposed to the air. You should be ok there if it's been sealed.
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Old 05-03-2013, 10:02 PM   #3  
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Default Re: Is this oil safe to use?

+1. I wouldn't be really worried about quality synthetics in unopened bottles degrading unless you cooked them or something.
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