1991 Acura NSX manual transaxle. Uses a gear driven oil pump and has a mesh oil strainer. Holds 2.9 quarts.
I previously tried the current Honda MTF oil and was very unhappy with the shifting quality.
Honda recommended change interval is 20,000 miles. This oil felt great when first added, but shift quality was significantly deteriorated after 14,000 miles, which led to the early change. There are 4 track days on this oil.
The car has a slight gear whine type sounds at low speed that I suspect may be a transmission issue, maybe the input shaft bearing. Not sure if this analysis shows evidence of an issue or not.
NOTES FROM LAB:
Silicon appears to be slightly higher than normal. Have there been any recent repairs? Higher silicon concentration does not appear to have affected wear. Other readings appear to be normal.
Code:
ELEMENETS IN PARTS PER MILLION
Sample Date 10/31/16
Oil Amsoil
Synchromesh
5w30
Miles on oil 14,000
Total miles 121,067
Lab CAT
Notes Daily driven
in NV.
Several track
days.
ALUMINUM 9
CHROMIUM 1
IRON 39
COPPER 4
LEAD 7
TIN 0
MOLYBDENUM 0
NICKEL 0
MANGANESE X
SILVER 0
TITANIUM 0
POTASSIUM 1
BORON 3
SILICON 25
SODIUM 5
CALCIUM 313
MAGNESIUM 3561
PHOSPHORUS 1194
ZINC 941
BARIUM X
PROPERTIES
SUS Viscosity @ 210°F
cSt Viscosity @ 100°C 9.3
Flashpoint in °F
Fuel % 0.0
Antifreeze % 0.0
Water % 0.0
Insolubles % 0.3
Oxidation 74
Nitration 7
Sulfation 72
Particle Quantifying Index 7
ISO 22/18/14
4u 37420
6u 2068
10u 421
14u 142
18u 67
21u 46
38u 8
50u 3
I previously tried the current Honda MTF oil and was very unhappy with the shifting quality.
Honda recommended change interval is 20,000 miles. This oil felt great when first added, but shift quality was significantly deteriorated after 14,000 miles, which led to the early change. There are 4 track days on this oil.
The car has a slight gear whine type sounds at low speed that I suspect may be a transmission issue, maybe the input shaft bearing. Not sure if this analysis shows evidence of an issue or not.
NOTES FROM LAB:
Silicon appears to be slightly higher than normal. Have there been any recent repairs? Higher silicon concentration does not appear to have affected wear. Other readings appear to be normal.
Code:
ELEMENETS IN PARTS PER MILLION
Sample Date 10/31/16
Oil Amsoil
Synchromesh
5w30
Miles on oil 14,000
Total miles 121,067
Lab CAT
Notes Daily driven
in NV.
Several track
days.
ALUMINUM 9
CHROMIUM 1
IRON 39
COPPER 4
LEAD 7
TIN 0
MOLYBDENUM 0
NICKEL 0
MANGANESE X
SILVER 0
TITANIUM 0
POTASSIUM 1
BORON 3
SILICON 25
SODIUM 5
CALCIUM 313
MAGNESIUM 3561
PHOSPHORUS 1194
ZINC 941
BARIUM X
PROPERTIES
SUS Viscosity @ 210°F
cSt Viscosity @ 100°C 9.3
Flashpoint in °F
Fuel % 0.0
Antifreeze % 0.0
Water % 0.0
Insolubles % 0.3
Oxidation 74
Nitration 7
Sulfation 72
Particle Quantifying Index 7
ISO 22/18/14
4u 37420
6u 2068
10u 421
14u 142
18u 67
21u 46
38u 8
50u 3
Last edited: