To be honest, i dont know what was it. I just took my car to byung (S2_4SHOOR) at Jim Coleman Honda and he changed everything. I trust him with my car
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I do not use CRV dual pump rear diff nor Pilot's diff fluid on our S2000s. We have 90 weight fluid pump tank in our parts department for only S2000 usage
Lots of S2000 customers bring their own rear diff fluid for their service (Mobil 1 75-90W) I personally like this a lot. I recommended Mo this also but what we have at Honda dealership is good enough.
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I will bring Mobil1 75-90W next time
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You got a lonnngg way to go for your next diff fluid change again lol I'm sure you'll forget about it But I'll remind you! Your car is fine

 

I change all the fluids in every vehicle I own yearly. In the long run it keeps me way ahead in the game. When I work on a customers vehicle I make money. Working on my own car costs me twice. I am spending time & money on my car when I could be making money working on something else. The $100.00 that I spend on a yearly maintenance, pays for itself tenfold in the fact that never have experience any major failures with any vehicle that I have owned. Case in point, my 1988 Acura Legend LS Coupe, that I bought new, has 388,000 miles & runs like the day I got it. With the exception of the transmission failing several times (common on V6 Acura/Honda), I haven't had any major problems with the car. Rust is going to be the end of this car & the end is near. My Acura CL has almost 250K on it now & it is still going strong. Quality cars & quality service, that combination is hard to beat.

Those of you that are praising the dealer, I caution you. Many years working Acura/Honda dealers, I have seen it all & not much of it is good. Unless you know someone, that you trust, you are at the mercy of a business that is driven by profit & greed. Paying more does not guarantee that you are getting better service. There are times that you have to go to the dealer, But for something as simple as a fluid service, it isn't necessary. I highly recommend that you find a local tech, buy your own fluids & if possible, watch them perform the service. That way you have the satisfaction of knowing that it was done correctly & that you got what you paid for.

I get vehicles in all the time that have been misdiagnosed or incorrectly repaired. People respect a service center that direct & trustworthy. Ask any of my customers, an honest tech is worth his weight in gold.

Change your fluids, do it now, don't be cheap & you can't do it too often. Hydrate... Hydrate... Hydrate...

 

^^ To each their own, I suppose. For most, yearly oil changes is a waste of time and money, not to mention, perfectly fine oil, unless of course you're driving your vehicle in severe conditions. But if you're changing your own oil and know the value of proper maintenance, then you're already ahead of most. And if changing your oil every week or month or year makes you feel better, then by all means. One of the biggest mistakes that people make is not knowing when and how to maintain their vehicles. Another mistake is having full/blind faith in dealerships, most of which are staffed by kids that are trained to increase turnover for sake of profit. I rarely go to dealerships, and if I have to, I'm always in the garage watching them work on my car(s) so I know that they're not cutting corners. Bottom line is this - read the owners manual, follow it, don't neglect or skimp on maintence when it's needed and your car will last a long time.

 

Hmmm...interesting how much this thread has sparked.

If I may offer my humble opinion, I change based on mileage because I usually change quicker with miles compared to time. I think it varies depends on how much you drive your car, in what conditions, etc. There's no definite right or wrong way. Both of you mentioned something critical... Don't neglect or skimp on maintenance and it will last a long time. So, no matter how you do it, just freakin' do it!

With that being said, new diff fluid and trans fluid is in. She's purrrrring like a kitten.

 

I used Red Line synthetics in my differential and transmission when I changed the fluids last and they definitely helped the feel, but I haven't been through multiple fluids to tell you how they compare to other brands. I still have to get around to popping up the center console and regreasing the shifter too...

 

Last time I changed the fluids I put the 90w mobil in the diff. So far no complaints, no weird happenings either. About 8k since then.

 

This. I have Amsoil in my diff and like it a lot.

 

I've been using Mobil 1 75W90 in the diff from 75K to 144K mileage in my S, changed every 15K miles. It's been great and has held up to a good bit of autocrossing, including several spins.

I now have a DD though, so I may change it based on time instead of mileage.

 

This thread reminds me that I need to do all of my fluids soon....engine, trans, and diff.

 

I have used the Diaqueen straight 90w stuff in my diff with no problems. Any quality oil will be ok for the diff. I have take apart many diffs that run different brands of fluids for many miles and the bearings showed no abnormal wear or pitting. The same applied to the ring gear itself.