"Lifetime" Differential fluid - Ford Powerstroke Diesel Forum
 
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post #1 of 7 Old 05-04-2010, 09:13 AM Thread Starter
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"Lifetime" Differential fluid

I think I have seen this on here before but not sure.

I know the manual says it never has to be changed unless it leaks or work is done to it. But I dont care how sythetic the oil is or what kind of additive is in it, after 8 yrs and 127,xxx miles(towing and turning 35's everyday) that fluid is going to break down.

So what is yalls take on never changing the differential fluid?
I think it should be done atleast every 100k or so.
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post #2 of 7 Old 05-04-2010, 09:19 AM
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Quote:
Originally Posted by Mikey's250 View Post
I think I have seen this on here before but not sure.

I know the manual says it never has to be changed unless it leaks or work is done to it. But I dont care how sythetic the oil is or what kind of additive is in it, after 8 yrs and 127,xxx miles(towing and turning 35's everyday) that fluid is going to break down.

So what is yalls take on never changing the differential fluid?
I think it should be done atleast every 100k or so.
mechanic told me to leave it alone unless you do it on regular short intervals. other than that i have no idea whats right. on a tangent though i went to a mx atv national a couple times in macon

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post #3 of 7 Old 05-04-2010, 09:23 AM
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I do mine at 100k. Diffs, transfer case, flush coolant, all the fluids.

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post #4 of 7 Old 05-04-2010, 09:36 AM Thread Starter
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Originally Posted by 107stroker View Post
mechanic told me to leave it alone unless you do it on regular short intervals. other than that i have no idea whats right. on a tangent though i went to a mx atv national a couple times in macon
Did he say what "short" means?
Were you in the nationals or just watching?

Quote:
Originally Posted by 05_PSD_Erik View Post
I do mine at 100k. Diffs, transfer case, flush coolant, all the fluids.
Thats what Im wanting to do this summer. It just sucks cause these trucks take huge amounts of every fluid.
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post #5 of 7 Old 05-04-2010, 11:21 AM
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Originally Posted by 05_PSD_Erik View Post
I do mine at 100k. Diffs, transfer case, flush coolant, all the fluids.
Same here except my intervals are at 60k.

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post #6 of 7 Old 05-04-2010, 07:27 PM
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[QUOTE=Mikey's250;1870689]Did he say what "short" means?
Were you in the nationals or just watching?

he mentioned 30-40k miles being considered short interval. yeah i raced there, its an awesome track.

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post #7 of 7 Old 05-05-2010, 09:00 AM Thread Starter
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[quote=107stroker;1871767]
Quote:
Originally Posted by Mikey's250 View Post
Did he say what "short" means?
Were you in the nationals or just watching?

he mentioned 30-40k miles being considered short interval. yeah i raced there, its an awesome track.
I gotcha. where was the track? indoor or outdoor?
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