chillout18

I was going to pick up mobil 1, which is what I used for my last change but isn't that synthetic? And how long should I wait after break in to change the fluid again, instructions say about a 1000 miles then is it every 15k after that?

Thanks

90crvtec

Why don't you read the oil journals and look at what hundreds, yes hundreds, of other people in your exact situation have done. This isn't rocket science and this question doesn't need to be asked again.

chillout18

I didnt think it would cover a brand new gear install but I'll take a look....

ya couldnt find what is recommended for a brand new differential. Link me if its in there please.

thanks

Stratocaster

Brand new, or used. Same fliud. Mobil 1 75W90 or LE607.

90crvtec

Use your common sense. Any Honda S2000 in existance was at one time brand new. Now if Honda puts a straight 90W gear oil in the brand new cars what do you think the recommendation is going to be regarding your new gearset? Hmm, yep, it's still going to be the same.

EDIT: not to mention if you bothered to do some real searching you'd see that lots of people run 75w90 with 4.56 and 4.77 gearsets. There was some discussion about running 85w140 at some point but I can't remember what the outcome was. Here's an idea, why don't you ask someone that actually installs gearsets and see what they recommend? I've got $10 that says they'll tell you to go with LE607 (this was already suggested), and surprise that's also a 90W oil. Like I said, this isn't rocket science.

SpitfireS

90crvtec Posted on Mar 7 2007, 05:57 PM
Richmond Gear does recommend 75W-140 gear oil for their final drive sets.

Honda recommends a GL-5 or GL-6 gear oil.
The GL-6 spec is "inactive" now but was intended (I guess in 1999) to be used in high offset, high shearing (final drive) gears.
I guess Honda thought that the S2000 diff could use such a "strong" oil.

LE-607

As soon as I hear from the LE distributor in the Netherlands about the availability of LE-608 or LE-609 I'm going to mix myself some oil and see what it does.

Stratocaster

Richmond specs that for the rest of their line up. But if you think about it, all of the rest of their gears are larger too. Lets offical state Use the Honda specs not the Richmond specs.

SpitfireS

Stratocaster Posted on Mar 7 2007, 06:55 PM
Use Honda specs.
Use a straight 90 weight GL-5 oil in your S2000 diff.
Use nothing else.
(Unless you have sufficient "data" to proof to yourself it really gets very, VERY cold where you live and the temps in which you have to start & drive your S2000 will stop the LE-607 to flow. Note that this "escape route" is not in any Honda manual)


To be honest I think it doesn't really matter what we recommend, do or say.

I've been reading a post on BITOG about the SAE J306 spec and that the one that is "official" at the moment is different from the one that is "under review".
SAE J306 is the gear oil viscosity specification.
(SAE J300 is the engine oil viscosity specification)
As soon as that new J306 spec is official, LE-607 would be rated a SAE 110 weight.
Would that stop you using it?
My answer is : No!

You'll have to pry my bottle of LE-607 out of my cold, dead hands!

chillout18

I knew what weight to use and everything but I wasn't sure if you could do a break in with synthetic oil, i Mobil 1 is in fact synthetic. But i dont think ill be installing anything yet because my Comptech housing isnt coming anymore....

gomarlins3

I used the Mobil1 for 1,000 miles when I put in the new diff, then changed to LE 607.