Hey guys, well I need to chage the diff fluid in my S, Anyway I read on hardtopguy.com somewhere where it says about this fluid as an additive. When people talk about using this fluid on the here, is it straight? fill the whole diff with the LE607???. Also I live in Cali where temps get somewhat cold in the winter at night and such, Sometimes gets into the teens.

Anyways just wondering if this fluid would be right for me. I hear it doesnt carry the whatever it is certification or whatever for use on the S2000, should I be worried about that? Will this cause my diff to fail or something terrible \

And yeah I read all the stickies and stuff and have heard mixed comments on this fluid, and learned that it was no good for cold weather. Just wondering if this might effect me. Thanks in advance

 

diff fluid for this car does not require any additive.

so the fluid you put in there is straight diff fluid, all of it.

le-607 is great.

but it is up to you if you think your climate is too cold for it.

 

I can't speak from experience since I don't drive my S2000 when the temperature is below 40F (I have RE 050 summer tires). But if I had to drive when temps drop below 40F, I would make the following changes:
-change my engine oil from 10W30 to 0W30 full synthetic
-change my diff fluid from LE 607 to AMSOIL 75W110 SVT
-change my transmission fluid to a fresh batch of new Honda MTF or GMSMFM (I haven't tried AMSOIL MTF yet)
-and most importantly, change my tires to an all season tire!
I hope this helps.

 

In our differentials, people are using LE-607 alone with no additional additives. The S2000 has a Torsen differential which does not need friction modifiers that some clutch-type diffs need to perform correctly.

The (2005) S2000 owners' manual states, "Use an SAE 90 viscosity hypoid gear oil, API service classified GL5 or GL6 only."

LE-607 does not have GL5 written anywhere on the bottle. HOWEVER, the MSDS for LE-607 specifically states "Exceeds API - GL5 Spec."

Therefore, LE-607 meets all the specs as required by the owners manual.

Be careful about how you word that... Many would not say that LE-607 is "no good for cold weather."

According to RoadRage, LE-607 has one of the lowest pour points of any 90W oil he's ever tested. It is very possible that is has a lower pour point than the factory fill oil, and every bit as appropriate for colder climates (depending on whether you feel the factory fill is appropriate).

Therein lies the dilemma. Honda clearly specifies in the owner's manual to use a straight 90W gear oil; not a multi-weight, or even the option for a multi-weight based on climate. However, many have expressed concern that any 90W (LE-607, stock, or other) may not perform appropriately in colder temperatures based on pour point measurements.

The only indication that I've seen that suggests that Honda recommends anything other than a straight 90W was a letter sent to Canadian dealerships back in '01 or '02 that suggested that owners could use the Honda 80W90 GL5 rated hypoid gear oil distributed through Honda motorcycle and marine shops. It seemed as though the intention of the recommendation was due to availability rather than suitability due to climate/temperature, but it did at least suggest that Honda might feel as though a multi-weight is okay for our diffs.

It's up to each individual to determine what is best for his/her specific situation.

 

okay sounds good. another question is how big of a deal would it be to run this in a cold diff? would the liquid be too slushy to do its job and therefore causing damage to the diff? I guess my main question is whats the recomended lowest temp that this oil should be used. If there is any, or just in your guys' opinion

 

okay sounds good. another question is how big of a deal would it be to run this in a cold diff? would the liquid be too slushy to do its job and therefore causing damage to the diff? I guess my main question is whats the recomended lowest temp that this oil should be used. If there is any, or just in your guys' opinion

 

IMO it is far worse to have a thin diff oil at operating temp then a thick diff oil when cold.
Because most of the time your diff IS at operating temp, regardless of the outside temp.
The final drive generates a lot of heat.

Btw.. the Honda Marine oil is a straight SAE 90 GL-5 oil.

If you operate your S2000 on a daily basis at arctic temperatures (always below -11F ) you have other stuff to worrie about too: engine oil and transmission oil.

IMO there are more noisy diffs because of the "thin" multi weight oils then there are noisy diffs because of to thick a oil when cold.

The Amsoil 75W-110 does sound like a very good cold climate alternative.
Its time for someone to do a UOA on it after 10k miles or so.

 

Honda did release a "service letter" (10/12/2001) in Canada saying it is OK to source 80w 90 gear oil from the motorcycle parts division (CB66314). As far as I know using the straight 90w gear oil from Honda's marine parts division was never suggested by Honda. Someone on the forums discovered the Honda marine product on their own and posted the info(08251-999-100HE).
LE-607 is GL5 rated. I have a 2 page .PDF of it's specs from Lubrication Engineers if anyone wants it. I don't remember where I got it, probably their website or something.

EDIT: It may have been Spitfire that discovered the Honda Marine product, can't remember. Now I wonder if he posted the LE-607 .PDF as well.

 

ok so one last question. how much do i need??

 

1 quart for the diff.
EDIT: Actually a little less. Pump it in the fill hole until it starts to run out of the fill hole. Spec at fluid change 0.78 US quart.