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Old 10-10-2012, 10:30 AM   #15
BigRed03
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Join Date: Feb 2006
Fan#: 32177
Location: Ft. Laudy, Afghanistan
What I Drive: 2003 CD Silver ZX5 SVT

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"API viscosity ratings for gear oils are not directly comparable with those for motor oil, and they are thinner than the figures suggest. For example, many modern gearboxes use a 75W90 gear oil, which is actually of equivalent viscosity to a 10W40 motor oil."

From: http://en.wikipedia.org/wiki/Gear_oil

Several instances around this forum, people use a specifically designed oil from Europe in the getrag, with the 5w and 10w40 euro spec oil (which is for motorcycles) which is used in both the engine AND transmission. Since mines a DD, I use the ford honey.


Both from Amsoil

TYPICAL TECHNICAL PROPERTIES
Synthetic Synchromesh Transmission Fluid 5W-30 (MTF)
Kinematic Viscosity @ 100C, cSt (ASTM D 445) 9.7
Kinematic Viscosity @ 40C, cSt (ASTM D 445) 48.3
Viscosity Index 190
Flash Point, C (F) (ASTM D 92) 150C Min. 218 (424)
Pour Point, C (F) (ASTM D 97) -46 (-51)
Four-Ball Wear Test Para 1 (75C, 1200 rpm, 40kg, 1hr.)
Scar, mm (ASTM D 4172) 0.40
Brookfield Viscosity @ -40C (ASTM D 2983) 39,050
Foam Stability (ASTM D 892) (20/50/20) Max. 0/0/0
Copper Corrosion 3 hr, 121C (ASTM D 130) 1A

TYPICAL TECHNICAL PROPERTIES
European Car Formula 100% Synthetic 5W-40 Motor Oil (AFL)
Kinematic Viscosity @ 100C, cSt (ASTM D-445) 13.7
Kinematic Viscosity @ 40C, cSt (ASTM D-445) 82.9
Viscosity Index (ASTM D-2270) 171
Viscosity CCS, cP @ C (ASTM D-5293) 5314 (-30)
Flash Point C (F) (ASTM D-92) 228 (442)
Fire Point C (F) (ASTM D-92) 244 (471)
Pour Point C (F) (ASTM D-97) -43 (-45)
Noack Volatility, % weight loss (g/100g) (ASTM D-5800) 7.4
Four Ball Wear Test (ASTM D-4172B @ 40 kg, 75C, 1200 rpm, 1 hr), Scar, mm 0.44
Total Base Number 8.0
HTHS (cP) (ASTM D-4683) 3.8

http://www.focusfanatics.com/forum/s...uropean&page=3

http://forums.focaljet.com/ford-svt-...yncromesh.html
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