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Mixing differential fluid

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Old 09-13-2014, 05:53 PM
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Default Mixing differential fluid
just got finished changing my differential fluid 85w140, 1 1/2 bottles can I top it off with 80w90
 
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Old 09-13-2014, 10:59 PM
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if you are not racing i think it will be ok. one time i mixed 3 QTs ARCO 10-30W graphite engine oil and 3 QTs stright 30 engine oil, ea change. for 50 K miles. and no trouble.
 
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Old 09-15-2014, 12:31 PM
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Originally Posted by GRed
just got finished changing my differential fluid 85w140, 1 1/2 bottles can I top it off with 80w90


or just buy another bottle, I think RP is about $22...really tho if you're only light towing you're good (how much are you 'topping it off with?)
 
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Old 09-15-2014, 07:07 PM
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I'm not an expert in any way... but I'd probably do it if I were just topping it off.
 
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