will check with redline and let you guys and girls know
it maybe helpful for others who are thinking of putting a
final ratio of some kind in.

 

For our S2000s you need 1 qt of Fluid for a diff fluid change

SHOCKPROOF GEAR OIL - recommended for heavily -loaded racing differentials and transmissions which see shock-loading. ShockProof contains a unique solid dispersion which cushions gear teeth to help prevent tooth breakage and allows the use of lower viscosities. Available as SuperLight, LightWeight, and Heavy grades.

Red Line Synthetic ShockProof TM Gear Oil provides unequalled protection for high-performance differentials and transmissions which are heavily loaded or which see shock-loading. This revolutionary lubricant is completely different from conventional lubricant technology in several ways. The viscosity characteristics are significantly improved. Gear teeth need high viscosity at high temperatures to prevent metal-to-metal contact and a low viscosity when cold to reduce fluid friction. The ShockProofTM chemistry significantly reduces the thinning effect of high-temperatures.

or


See details Red Line 75W90 Gear Oil (Differential)
SKU: OILFLUID-REDLINE.GEAR.75W90

75W90 Gear Oil - the preferred product in nearly all car and light truck differentials, both conventional and limited-slip. 75W90 is preferred for most racing applications. It contains friction modifier which is recommended for limited-slip units. 75W90 Gear Oil can be used in many transmissions ...

which one should I go for hmmmm

 

LE-607
http://marketplace.s2ki.com/s2ki/product.p...ctid=171&cat=24