I want to know how I can flush out my rear end.i draind it the other day and it was black. I put in Honda rear end oil.but I would like to flush it out until the oil runs clear.

 

If you are really wanting a "flush" just change the diff fluid really often.

Change it, drive it 500 miles, change it, drive it again 500 miles, Change it, repeat the cycle until you are happy with the result.

This will not be super cheap though. Any idea how since the last change was done?

 

Not sure what you mean by "Honda rear end oil" as some dealers are unaware of the type of differential the S2000 has. After a warm up, a good drain should do it after an hour or two of letting it sit.

 

I don't think Honda has gear lube for the S anymore. If its the 75/85 I'd get it out of there fast. A lot on here go with 75/110 or 75/140 gear lube. Honda does make a 90w for outboard motors, don't think I'd use the either.
Do a search and you will find a lot on gear lube

Rod

 

thanks guys.i did get Honda rear differential oil.but if there is better oil to use please let me know

 

Search is your friend. Tons of threads here on this.

 

like the one directly underneath this one lol

 

You can't go wrong with this one. It is about $16. One of the well known S2000 mechanics, a moderator on this site, has stated his confidence in this particular diff lubricant.