FormerH22a4

Honda MTF

Titanium -0
Silver - 0
Copper - 0
Lead - 0
Tin - 0
Aluminum - 0
Nickel - 0
Iron - 0
Chromium - 0
Sodium - 0
Boron - 1
Silicon - 0
Water - 0
Soot - 0
Glycol - 0

Moly - 0
Magnesium - 11
Calcium - 2652
Barium - 0
Phosphorous - 1401
Zinc -1564
Visc@100C - 11.26
Tan mg/g - 0.30

Redline MT-90

Metal

Iron (Fe) 2
Copper (Cu) 0
Chromium (Cr) 0
Aluminum (Al) 3
Lead (Pb) 3
Tin (Sn) 6
Silicon (Si) 15
Sodium (Na) 18
Potassium (K) 21
Molybdenum (Mo) 1
Phosphorus (P) 2410
Zinc (Zn) 2750
Calcium (Ca) 2840
Magnesium (Mg) 11

Physical

Water (W) N
Fuel (F) /
Antifreeze (A) /
Viscocity At 40 C (V40) 0
Total Acid Number (Tan) 1
Total Base Number (Tbn) 3
Viscosity At 100 C (V100) 14.3
Particle

Redline MTL

Metal

Iron (Fe) 1
Copper (Cu) 0
Chromium (Cr) 0
Aluminum (Al) 3
Lead (Pb) 3
Tin (Sn) 5
Silicon (Si) 25
Sodium (Na) 21
Potassium (K) 11
Molybdenum (Mo) 1
Phosphorus (P) 2520
Zinc (Zn) 2820
Calcium (Ca) 2860
Magnesium (Mg) 11
Physical

Water (W) N
Fuel (F) /
Antifreeze (A) /
Viscocity At 40 C (V40) NR
Total Acid Number (Tan) 1
Total Base Number (Tbn) 4
Viscosity At 100 C (V100) 11.2


Iso Code Rating (Iso) 19/12


It looks like the Honda MTF has the same visc @ 100C as the Redline MTL. I think a slight mix of Redline MTL (1.2 litre) and MT (0.5 litres) would good to give it a bit more visc for summer.

JL9000

That's of the VOA right?

I'm still waiting for the UOA from BOBISTHEOILGUY.

FormerH22a4

Yep, that is VOA (Virgin Oil Analysis)
I'll have a UOA in a couple weeks and will post up here.

mwy23

so what does all that mean?

Gernby

I tried mixing MTL and MT-90, and it didn't work well for long. After about 3K miles, it felt worse than any other oil I have tried. I'm back to straight MT-90 now.

svatne

Can we safely assume that the oil pump in the S2000 transmission can handle 90 wt gear oil? For other transmissions that isn't a consideration, but it is for this car.
Thanks,
svatne

Gernby

MT-90 is not a 90 wt gear oil. It is just slightly heavier than the OEM fluid. The owner's manual specifies an equivalent engine oil viscosity of 5W-30 to 10W-30 (or 10W-40?). Redline MTL is closer to 5W-30, and MT-90 is closer to 10W-30.

FormerH22a4

Actually, MT-90 is a bit beyond 10W30. SAE 10W30 has a visc of around 9.6 to 12.5 @ 100C. The MT-90 is 14.3 @ 100C.

Gernby, for TX, summer MT-90 is perfect. How are your grinds?

fly_S2K

still confused on what all that meant...I am about to change my tranny oil, but still don't know which brand to go with. ...Honda MTF, Redline MTF, Redline MT-90, Neo MTF....

FormerH22a4

It depends on where you live. Neo is a good choice since it fits in between the Honda MTF and the Redline MT-90.