AMSOIL

SEVERE GEAR® Synthetic Extreme Pressure (EP) Lubricant 75W-90 (SVG)

Kinematic Viscosity @ 100°C, cSt (ASTM D-445) 16.7
Kinematic Viscosity @ 40°C, cst (ASTM D-445) 109.1
Viscosity Index (ASTM D-2270) 165
Brookfield Viscosity, cP (150,000 Max) @-40°C 68,150
Flash Point, °C (°F) (ASTM D-92) 150°C Min. 220 (428)
Pour Point, °C (°F) (ASTM D-97) -50 (-58)
Copper Corrosion (ASTM D-130) 1b Max @ 121 °C (250°F) / 3hr 1b
Falex Procedure B (ASTM D-3233) (failure load, lbf.) 2500
Foam Stability (ASTM D-892) (20/50/20 maximum) 0/0/0

AMSOIL SEVERE GEAR® Synthetic Extreme Pressure (EP) Lubricant 75W-110 (SVT)
Kinematic Viscosity @ 100°C, cSt (ASTM D-445) 20.4
Kinematic Viscosity @ 40°C, cst (ASTM D-445) 141.3
Viscosity Index (ASTM D-2270) 167
Brookfield Viscosity, cP (150,000 Max) @-40°C 118,500
Flash Point, °C (°F) (ASTM D-92) 150°C Min. 220 (428)
Pour Point, °C (°F) (ASTM D-97) -48 (-54)
Copper Corrosion (ASTM D-130) 1b Max @ 121 °C (250°F) / 3hr 1b
Falex Procedure B (ASTM D-3233) (failure load, lbf.) 2500
Foam Stability (ASTM D-892) (20/50/20 maximum) 0/0/0

MOTUL

GEAR 300

75W-90

Viscosity grade SAE J306 75W-90
Density at 15°C (59°F) ASTM D1298 0.900
Viscosity at 40°C (104°F) ASTM D445 72.6 mm²/s
Viscosity at 100°C (212°F) ASTM D445 15.2 mm²/s
Viscosity index VIE ASTM D2270 222
Flash point ASTM D92 200°C / 392°F
Pour point ASTM D97 -60°C / -76°F

RED LINE

75W90 GL-5 Gear Oil

API Service Class GL 5+
Viscosity Grade SAE 75W90
Vis @ 100°C, cSt 16.4
Vis @ 40°C, cSt 115
Viscosity Index 155
Pour Point, °C -45
Pour Point, °F -49
Flash Point, °C 227
Flash Point, °F 440
Brookfield Viscosity, Poise 1100 @-40°C

LIQUID ENGINEERS

1604

ISO VG 150
SAE Grade 90
AGMA Grade 4 EP
Gravity, ºAPI 29.3
Sp. Gravity 0.885
Viscosity, cSt @ 40ºC 156.0
cSt @ 100ºC 16.42
Viscosity Index 111
Flash Point, ºF (ºC) 410 (210)
Pour Point, ºF (ºC) -11 (-24)

MOBIL 1

Synthetic Gear Lube
LS 75W-90

SAE Grade 75W-90
Viscosity, ASTM D 445
cSt @ 40ºC 106
cst @ 100ºC 15.2
Viscosity Index, ASTM D 2270 150
Pour Point, ºC, ASTM D 97 -46
Flash Point, ºC, ASTM D 92 175
Density@15C kg/l, ASTM D 4052 0.859

CASTROL

Syntec 75W-90 Gear Oil

Grade 75W-90
API Service GL-5, MT-1
Mack Service GO-H/S
Viscosity, cSt 100°C ASTM D-445 15.0
Low Temp.(ºC) Brookfield Vis. cst., max ASTM D-2983 150,000 (-40)
Pour Point, ºC max ASTM D-97 -39
Flash Point, COC, °F(°C) min ASTM D-92 390 (198)
Specific Gravity, 60°F ASTM D-1298 0.86
Pounds per Gallon 7.16

ROYAL PURPLE

75W-90 Gear

SAE Grade
Typical Properties* 75W90
Viscosity
cSt @ 40°C 132.3
cSt @ 100°C 19.1
SSU @100°F 677
SSU @ 210°F 97
CP @ -12°C — — — — 30,000
CP @ -26°C — — 50,000 — —
CP @ -40°C 100,000
Flash °F 380
Fire °F 465 465
Pour Point °F -54

Four Ball EP Test
Weld Load, kgf 400
Specific Gravity @ 60°F 0.895
Lbs. / Gal 7.45

just some of my findings i thought id post...anything to share?

 

So, what the analysis? Which is better for Canada climate?

Which is better for us Southern folk?

 

Technically, everyone uses LE 1605, not 1604.

 

So, what does it all mean?

 

I'd say less viscous fluids will generally be better up North. However, I'm in the south and I've used Mobil 1 since I've owned the car and she runs fine. I don't think its that big of a deal as long as you're sticking with a synthetic 75W-90.

 

yeah i included the sae 90w for comparison purposes. the other weights were similar numbers.

For me, I like a low pour point since I drive the car in relatively cold weather for the S, and the sooner things get up to operating temp the better is my theory. If someone can comment on the other numbers

 

you left out Amsoil Severe Gear 75w-110, my favourite fluid. Excellent cold temp flow for anyone in northern climates. At 100 degree C it is in the middle to upper end of the SAE 90 spec, while others on the list are at the lower end. I'd use it over all others, but everyone has their own opinion. Perfect combination of high temp protection and cold temp flow.

 

amsoil 75/110 added

 

Thanks here is some info on viscosity charts that may be of some assistance.

http://www.bobistheoilguy.com/index.php?op...id=48&Itemid=55

 

cool will look into those. I wonder about Viscosity Index...if it means anything?