Should you change gear oil after 500 miles?? - Ford Mustang Forums : Corral.net Mustang Forum
 
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post #1 of 5 Old 04-10-2002, 12:31 AM Thread Starter
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Should you change gear oil after 500 miles??

Subject pretty much says it all. I'm having gears installed Friday and the guy said he's just putting in standard gear oil not synthetic because I should change it in 500 miles anyways. Do you really need to replace it after the swap? Should I just use synthetic now and not worry about it? Whats the normal interval for changing the oil if its standard vs synthetic? Thanks


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post #2 of 5 Old 04-10-2002, 01:31 AM
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you should so that you can get all the little metal shavings that might be floating around from the new gears out. it's really easy to do. just fill it back up with redline gear oil which already has the friction modifer in it so you don't have to add anymore.

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post #3 of 5 Old 04-10-2002, 10:53 AM Thread Starter
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Thanks. Just wanted to be sure.
Is there any break in needed on the gears? I've noticed alot of mixed ideas in the archives.

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post #4 of 5 Old 04-10-2002, 10:59 AM
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Disregard, I missed part of your explanation.
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post #5 of 5 Old 04-10-2002, 11:19 AM
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Quote:
Originally posted by gr99gt
Thanks. Just wanted to be sure.
Is there any break in needed on the gears? I've noticed alot of mixed ideas in the archives.
Yes. The gears should be heat cycled. At first, drive slowly and for short distances, stopping to let the diff cool off. Gradually build up higher speeds and longer distances until after 500 miles the gears are supposed to be broken in. In reality, the gears are probably broken in before that point. The important thing is when they're brand new, don't drive at hard acceleration, high speed or long distances. You must drive easy & stop every few miles to let the gears cool off.

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