There IS an OEM differential fluid!
Registered User
Joined: Aug 2003
Posts: 3,660
Likes: 2
From: Midlothian
I did a quick look-see at the OEM fluid. It is certainly not a 75w90, and not a 80w90. It is a 90 weight, and by its "gross" properties, appears to be a mineral-oil based one. I just do not have the time nor see the point of going beyond that.
So, my car was made in October, 2003, and had 5 miles on it when i got it. The Owner's Manual is for a 2004.
From this I can say without question as of October, 2003:
1) Honda is not shipping the car's with a muilti-viscosity oil
2) Honda still recommends a 90w oil and has had plenty of time to "correct" its Owner's Manual specifications and its recommendations to its dealers. That means any conclusions we draw from TSB's to be conjecture, and dealer confusion (which seems pandemic) suggests AHM has been not duly diligent. Based on my knowledge of the innerworkings of Corporate America, this is IMO attributable to the tiny sales volume of the S2000. Note that I make no excuse for AHM - the opposite is in fact the truth - I think they have been woefully negligent. We are just the equivalent of plankton being eaten by a blue whale - do you think he gives them cute names as they wash down his gullet in the millions?
Nor do I.
I would like someone in authority at AHM to state, for the record, responses to Points #1 and #2, above. In the absence of same, I will go with what i have measured, observed, read, and seen in the field. I will also weigh in the anecdotal observations of those on this Forum whose judgement and integrity are unassailable.
So, my car was made in October, 2003, and had 5 miles on it when i got it. The Owner's Manual is for a 2004.
From this I can say without question as of October, 2003:
1) Honda is not shipping the car's with a muilti-viscosity oil
2) Honda still recommends a 90w oil and has had plenty of time to "correct" its Owner's Manual specifications and its recommendations to its dealers. That means any conclusions we draw from TSB's to be conjecture, and dealer confusion (which seems pandemic) suggests AHM has been not duly diligent. Based on my knowledge of the innerworkings of Corporate America, this is IMO attributable to the tiny sales volume of the S2000. Note that I make no excuse for AHM - the opposite is in fact the truth - I think they have been woefully negligent. We are just the equivalent of plankton being eaten by a blue whale - do you think he gives them cute names as they wash down his gullet in the millions?
Nor do I.
I would like someone in authority at AHM to state, for the record, responses to Points #1 and #2, above. In the absence of same, I will go with what i have measured, observed, read, and seen in the field. I will also weigh in the anecdotal observations of those on this Forum whose judgement and integrity are unassailable.
Registered User
Joined: Jun 2001
Posts: 613
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From: Edmonton
Just curious. I know that some of the honda motors come with breakin oil, or a breakin additive in the oil. Is there some way that this oil may help the ring and pinion to form an appropriate wear pattern? Or for that matter, the gears inside the Torsen style diff? Could there actually have been a good reason or is it, without question, negligence on the party of my favourite car company/motorcycle manufacturer?
Registered User
Joined: Aug 2003
Posts: 1,383
Likes: 1
Originally posted by genghiskwong
different cars, different differentials......
apples to oranges.....
different cars, different differentials......
apples to oranges.....
It was just an example.....Think about it, most Ferrari are high performance race car for the street. Most of there engine put out more than 300+ HP. Most of there differential are limited slip (Our differential are limited slip). With all that power going to the rear, i'm sure there differential are under more torsion stress than our differential...like i said 75w90 are adequate... 90w is too damn thick... Just my .02 cents!!
