which rear differential oil do u recommend? I am also going to be doing the tran oil change with Amsoil.

Genuine OEM Honda VTM-4
http://www.amazon.co...asin=B00BYFE6LO

Mobil 1 104361 75W-90 Synthetic Gear Lube
http://www.amazon.co...r/dp/B000ONZXPK

AMSoil (there are so many AMSoil options...which one should fit my car as it is 05, with 120k)
http://www.amsoil.co...duct/gear-lube/

Swepco 201 Gear Oil, 80/90 (used in Porsche)
http://www.amazon.co...asin=B00BYFE6LO

 

I've heard good things about Amsoil severe gear

 

I use amsoil 75w140 in my Puddymod diff.

 

Honda VTM-4 can't be compatible with the S2000 diff. It has the viscosity comparable to a 20 weight oil, that can't be good as it is way too thin. Cross that off the list.

I'd recommend LE1605 which is an SAE110 fluid , it has worked great for me. Amsoil 75w110 and 75w140 are also good choices. I don't know anything about the other fluid, but I prefer something that is at least a 110 , I try to avoid anything that is 95 or lower, just my preference.

 

its been covered a bunch of times... lots like the 75w-110 from Amsoil. Depends on applications. search for the previous posts about it. good info. I run 75w-90 Mobil 1 but i might switch to Amsoil next go around. I change every year due to low mileage otherwise i say change every 15k under normal driving.

And there isnt an OEM Honda Diff Fluid fyi

 

I'd recommend LE1605-- +1.

-- Chuck

 

I'm using amsoil 75-110 for a couple of years now and I'm very satisfied as well. The car is driven sometimes at the track as well with no issues what so ever.

 

I'd recommend LE1605,if you can find it.
I could not,so I'm using Amsoil 75-140.

 

LE1605 can be found at Rick's. I've been using it since my first diff fluid change, no problems. Been pretty abusive the last couple of years

 

LE1605