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DIFFERENTIAL FLUID

DIFFERENTIAL FLUID

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Old 10-17-2018, 11:36 AM
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DIFFERENTIAL FLUID

Hi,
I have a 2007 S2000 that drives like a top. I am the original owner. I don't beat it and it has 21,000 miles on it. I change the oil every fall with Mobil 1. Should I be changing the differential fluid now? I believe that Honda suggests at 15,000 miles to do this change out. A mechanic tells me that just based on the age of the car I should do it.A few friends tell me I'm crazy to do it now. Any expert advice would be greatly appreciated.
Ed
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Old 10-18-2018, 06:12 AM
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If you never did it before, why not? Not hard to do yourself. I put this in mine:


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Old 10-18-2018, 06:28 AM
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That's exactly what I bought!
Thanks.
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Old 10-19-2018, 08:44 PM
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You could also do the transmission fluid too. Mileage-wise, it probably still good....but considering the age is another matter. Regardless, it's another cheap and easy maintenance item to do every 25-30,000 miles. I've probably done mine every 40k.
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Old 10-20-2018, 03:10 AM
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The cheapest insurance you can buy is regular fluid changes. It's a lot cheaper paying $100 for oil/diff/transmission fluid changes than $6000 for an engine or the cost of replacing a diff or transmission.
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Old 10-20-2018, 08:19 PM
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A car that sits collects water in it's fluids. The atomsphere pressure changes cause the cases to inhale and exahle leaving condensation behind. Change the oil in every thing. JIM21680 and Kgf3076 own it. Maintence is way more fun than repairs.
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Old 10-22-2018, 07:21 AM
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Related to this question, and without wanting to start a huge debate on what fluids are “best” ... what brands and viscosities are people using for diff, transmission, and engine? My car is 2006 with 24 K kilometers and is not tracked or beat on very hard. Newish owner looking for recommendations. Cheers, Mike
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Old 10-22-2018, 12:40 PM
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I use Mobil 1 10w-30, Redline 75-90 (or higher depending on whether I have a Dragon trip coming up), and GM MTF for the transmission (the Honda MTF is also good).
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Old 10-22-2018, 02:04 PM
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Thanks very much. Exactly type of input I wanted. Just curious why of you use Redline in diff, you don't use Redline product in transmission?
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Old 10-22-2018, 04:11 PM
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Originally Posted by mgedit View Post
Thanks very much. Exactly type of input I wanted. Just curious why of you use Redline in diff, you don't use Redline product in transmission?
I have used Redline in the trans, but the Honda OEM and GM both give roughly the same shifting feel and are cheaper (same quality, lower price. What's not to love? )


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Old 10-23-2018, 05:16 AM
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Thanks.
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Old 10-23-2018, 08:16 AM
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Originally Posted by mgedit View Post
Thanks.
Drop by S2KI.com or S2KCA and give maggiemae a yell. He's near Toronto or zenairdave who's not that far from you. Last time I was in Kepmtville I was heading to Ottawa and came up the "back" way.
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Old 10-31-2018, 12:33 PM
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As you have a 2007 DBW, (drive by wire) you should check the valves. Almost all DBW cars have tight exhaust valves. I have an 09 and at 40K miles I checked and was surprised to find my exhaust valves were indeed tight. Another mechanic said if I had left them till 60K miles I would have torched the valves.

You should also tighten the rear axles per the TSB. They also become quite loose and can lead to bearing failure. Only the rear axles are affected.

BTW, I change out the diff and the trans every spring. Why? Because I like to. Oil is every 3K miles with an OEM filter. I use that Mobil 1 75W-90 for the diff and Amsoil for the trans. I have experimented with Honda, Mobil, and Amsoil and like the Amsoil MTF the best.

The OEM Honda oil filter is built differently than other filters with the gasket sandwiched between 2 metal rings. You need a wrench to properly torque it. Cannot/should not do it by hand.
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Old 10-31-2018, 02:59 PM
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Thanks for the tips and feedback. Cheers, Mike
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