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Old 10-09-2012, 04:51 PM   #11
limeyrider
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Quote:
Originally Posted by 02slvrfocus View Post
any type of full maunual synthetic fluid will work
absolutely not
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Old 10-09-2012, 04:53 PM   #12
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Originally Posted by Dads03SVT View Post
Weird... i run Royal Purple 10W-40 motor oil....
It will work a bit longer than Clorox but, like Clorox, it will be very slick and smooth until you need a new transmission. Motor oil is far too viscous.
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Old 10-09-2012, 10:19 PM   #13
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the mercon V for our transmission is basically euro spec 10W40 motor oil. and having replaced the mtx and getrag fluid with the "ford honey", its basically engine oil.
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Old 10-10-2012, 08:41 AM   #14
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Originally Posted by BigRed03 View Post
the mercon V for our transmission is basically euro spec 10W40 motor oil. and having replaced the mtx and getrag fluid with the "ford honey", its basically engine oil.
I have no idea where you got that info. but I'd really like to read it. I'm not pointing a finger at you but I would severely admonish and never believe whoever told you that.

Merc. V full synthetic is GL-4 gear rated hydraulic fluid. It doesn't even come close to motor oil. It's less viscous than straight 5 weight machine oil.


Merc V (synthetic)
Vis @ 100C, cSt 7.5
Vis @ 40C, cSt 34
Viscosity Index 198
Pour Point, C -60
Pour Point, F -76
Flash Point, C 225
Flash Point, F 437
Brookfield Vis @ -40C, P 52

10W-40 (synthetic)
Viscosity Grade SAE 10W40
Vis @ 100C, cSt 14.6
Vis @ 40C, cSt 93
Viscosity Index 164
CCS Viscosity, Poise, @*C 65@-25
Pour Point, C -45
Pour Point, F n/a
Flash Point, C 248
Flash Point, F 478
NOACK Evaporation Loss,1hr @ 482F (250C), % 6
HTHS Vis, cP @150C, ASTM D4741 4.7
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Old 10-10-2012, 10:30 AM   #15
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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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Old 10-10-2012, 10:46 AM   #16
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cSt - Centi-stroke has nothing to do with API's own version of oil 'weight.' cSt is a standardized measurement regardless of the fluid being measured or what organization does the measuring.

Quote:
Originally Posted by BigRed03 View Post
"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 5 or 10W40 oil from Europe in the getrag for racing. Since mines a DD, I use the ford honey.


From Amsoil:
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
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Old 10-10-2012, 10:59 AM   #17
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Quote:
Originally Posted by BigRed03 View Post
"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."


Several instances around this forum, people use a specifically designed 5 or 10W40 oil from Europe in the getrag for racing. Since mines a DD, I use the ford honey.
When I worked in Germany, 10W-40 THERE was the same viscosity as 10W-40 in North America. Like I said, I have no idea where you get that information. cSt measurements are not 'custom made' to any fluid, they are a standardized measurement...

Quote:
Originally Posted by BigRed03 View Post
From Amsoil:
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
The Amsoil data support exactly what my point is. Motor oil is not even close to GL-4 lubricant. I think there are maybe three or four of us on this entire forum who can interpret what the spec sheets tell us. I don't mean anything as a personal attack but you're posting information that contradicts your hypothesis.
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Old 10-10-2012, 11:12 AM   #18
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if you read the FJ link, there is a lengthy discussion on this. Amsoil and RP recommend 10w40 for the getrag.
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Old 10-10-2012, 06:09 PM   #19
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if you read the FJ link, there is a lengthy discussion on this. Amsoil and RP recommend 10w40 for the getrag.
no offense dude of course they do, they sell it
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Old 10-10-2012, 06:16 PM   #20
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Originally Posted by BigRed03 View Post
"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."
My bike takes 10w-40 and i KNOW that its at least half as thin as 75W140 from dealing with both more times than i would care to count, same goes as merc 5 its water compareed to 10W40. Ford to my understanding does not run 75w90 in ANYTHING anymore, all the manuals are more of a "automatic tranny fluild" than a gear oil because of the tolerances being alot tighter than a 1967 ford f150, even the rear diffs are not 75W90 they are mostly 75W140
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