[home][rumors and news][model release matrix][dealer network][desktop calendar][exhaust notes][tov forums][links][search][sponsors][garage][login]

Tire Rack Upgrade Garage
 Search for a Dealer:
 Canadian Flag US Flag
 Honda Acura
 ZIP  
Acura
There are currently no active Acura promotions
Honda
There are currently no active Honda promotions
American Honda reports strong sales numbers for September 2017
More.......................
Honda will be showing a Sports EV Concept at the 2017 Tokyo Motor Show
More.......................
The 1.5T in the 2018 Accord has VTEC!
More.......................
Honda Urban EV Concept unveiled at the Frankfurt Motor Show
More.......................
American Honda Reports August 2017 Auto Sales
More.......................
Some Civic Type Rs are overheating on track
More.......................
Spied on the STREET! Next Gen RDX
More.......................
Acura Reveals Striking New Design for 2018 Acura RLX; Debut Set for Monterey Automotive Week
More.......................
General Talk --> Re: Do you wrench on your own car?
Join Discussion......
General Talk --> Re: Product Update: 2016 Pilot 9-Speed Transmission Warmer
Join Discussion......
Accord --> Re: C&D Test - Honda Accord 2.0T Touring 10AT
Join Discussion......
NSX --> Re: Where are the NSX road tests?
Join Discussion......
Type R --> Re: Cheaper Type-R model on the way
Join Discussion......
General Talk --> Re: Kia Stinger - RWD
Join Discussion......
Fuel Cell Technology --> Re: Station offline due to compressor issues
Join Discussion......
Photoshops --> Re: Accord Sport Wagon
Join Discussion......
Fuel Cell Technology --> Re: updates on cracked windshield
Join Discussion......
Today's Reading Links --> Re: We Regret to Inform You… the Hyundai i30 N Is Outstanding
Join Discussion......
Accord --> Re: Accord 2.0T vs Camry V6 - MT Oct 2017
Join Discussion......
Honda Power Equipment --> Re: Honda mower after a flood
Join Discussion......
Accord --> Re: 2018 Honda Accord Reviews
Join Discussion......
Today's Reading Links --> Re: 5,000 deaths annually from dieselgate in Europe
Join Discussion......
Professional Motorsports --> Re: Honda PU
Join Discussion......
Jump to:
article details
Author Tuan
Categories S2000, S2000 Drivetrain
Create Date January 14, 2002 17:37
Last Update May 04, 2002 09:36
Changing the S2000 Differential Fluid

Honda's recommended service schedule for the differential fluid is 15,000 miles for severe usage and 30,000 miles for normal usage. After this exercise, I would recommend that you change your diff fluid at about 7,500-12,500 miles depending on how you drive your car.


This is obviously at the rear of the car looking up at the differential. The drain plug is on the bottom, while the fill hole is up higher. The drain plug can be removed via a 23mm socket and socket wrench. The fill plug can be removed via a 23mm closed box wrench. Torque settings are 33lb*ft for both when you close everything up.


This thick, brown/black fluid drained out or should I say "glooped" out of my car after only 12,500 miles! Being a heavy weight oil and ambient temperature being about 65F explains why the oil drained out in this slow fashion. You may want to try draining it when the differential fluid is slightly warm. In my case, I just let it drain out for a very long time. Honda recommends 15,000 miles for severe usage while 30,000 miles for normal usage using their Honda MTF. Given my experience after this, I will be replacing the fluid every 10,000 miles with a better synthetic gear oil or every 7,500 miles with the Honda MTF.

diff02.jpg (63032 bytes) diff03.jpg (88370 bytes) diff04.jpg (64875 bytes)
The drain plug has a weak magnet embedded in it. This enables it to pick up some sludge as shown. Try to clean the plug as much as possible to reveal the small magnet. The magnet is not very strong, but I suppose it does it's job. One trick I've learned is to find an old broken hard drive and to tear it apart. Inside, you will find a very small, but very powerful magnet. Wrap this magnet in some very thin fabric and simply attach it to the outside of the drain plug. It makes the magnetic plug more effective.


I used a simple hand pump to transfer the oil up into the fill hole.


I threaded the tube through the top as shown to get a better angle into the fill hole. The car should be level while filling so you can jack up your car onto 4 jack stands. A lazy man's method can be to jack up only the rear of the car and then refill with 7/8 quart. You can see how much you are using by the clear line in the bottle. Once done, simply lower the rear and then excess oil will spill out. Be careful to catch this oil or else you'll have an unpleasant smell in your garage.

Before the fluid change, my differential always had a 3-4 step jerkiness accelerating out of my street corner in the morning. This happened only in the cold mornings and on the first turn. After the fluid change, the differential felt slightly better with a 1-2 step softer jerkiness in the first turn in the morning. A side effect now is that there seems to be a louder whine coming from the differential. Post your comments about your experiences with other fluids below.

Redline Fluid Usage by Shawn Church
Given the apparent fragility of the S2000 rear differential, I decided to try a more aggressive approach to differential fluid. I turned to Redline's Shockproof line of fluids, which are designed to provide superior protection while maintaining or reducing friction levels in the differential.

I performed my first fluid change using Redline's Heavy Duty Shockproof fluid. Redline claims that the Heavy Duty formulation of this oil has the protective performance of a 75w250 oil, but the fluidity (read friction) of a more conventional 75w90. It also has special additives designed to handle shock loadings (such as a 7,000 rpm drop clutch launch?). The Heavy Duty is a thick red fluid, as opposed to the gray of the OEM fill. It is also very thick and required some hard work with the hand pump. Immediately after changing to the Heavy Duty (after about 10,000 miles on the stock fluid) I noticed several things. First, the LSD effect seemed more pronounced. Since gear type diffs are not supposed to need friction modifiers to perform effectively, I can only assume that the thicker nature of the fluid may have contributed to this (or the breakdown of the old stock fluid). I also noted that the differential was quieter and smoother. Finally, while no dyno testing was performed, no apparent loss of acceleration was detected.

After 6,500 miles with no ill effects on the Heavy Duty, I decided to try the Lightweight, which has the protection of 75w90 but with much lower friction properties (30w motor oil). The Lightweight is a bluish color and is noticeably thinner than the fresh Heavy Duty. After pumping in the Lightweight no noticeable difference was noticed in the performance or noise of the diff. However, after 6,500 miles, the differential is again making some noise when cold. This leads me to believe that the Lightweight, while suitable for short term use in racing applications, may not be appropriate for long interval use in a street/track car, particularly one that must go through many warm up/cool down cycles. Thus, it is my recommendation that if you want to use Shockproof gear oils from Redline, that you stick with the Heavy Duty for multipurpose uses. The Lightweight is acceptable, but may not provide sufficient protection over longer change intervals. http://www.redlineoil.com/products.htm

reader's comments
Click Here to Submit Your Comments

Viewing Threshold (What is this?)

[fancy] [flat] [simple]
Date Thread Starter Thread
11-20-2006 20:19
Suggestions   (Score: 1, Normal)
Tyler Durden
12-09-2002 20:33
Correction   (Score: 1, Normal)
Destiny2002
Jump to:
TOV First Drive: 2018 Honda Accord
Read Article....................
2018 Honda Accord Specifications and Features (FINAL)
Read Article....................
2018 Honda Accord Hybrid PR Photo Gallery
Read Article....................
2018 Accord Touring 2.0T PR Photo Gallery
Read Article....................
2018 Accord Touring 1.5T PR Photo Gallery
Read Article....................
2018 Honda Accord Sport 2.0T PR Photo Gallery
Read Article....................
Contact TOV | Submit Your Article | Submit Your Link | Advertise | TOV Shop | Events | Our Sponsors | TOV Archives
Copyright © 2017 Velocitech Inc. All information contained herein remains the property of Velocitech Inc.
The Temple of VTEC is not affiliated with American Honda Motor Co., Inc. TOV Policies and Guidelines - Credits - Privacy Policy