Suspension, Brakes, Drivetrain discuss the wondrous effects of boost and your miata...
Sponsored by:
Sponsored by:

Lube my Tranny

Thread Tools
 
Search this Thread
 
Old 01-22-2015, 02:21 PM
  #61  
Boost Pope
Thread Starter
iTrader: (8)
 
Joe Perez's Avatar
 
Join Date: Sep 2005
Location: Chicago. (The less-murder part.)
Posts: 33,049
Total Cats: 6,608
Default

Originally Posted by vehicular
How thick is the Motorcraft stuff? Between 10w30 and gear oil, or straight up gear oil?
The Ford spec sheet calls it a fully synthetic GL-4 75W-90, with a viscosity at 100°C of 15.4 cSt. This puts it into approximately the same range as the full-synth 75W-90 gear oils from most other major manufacturers at the upper end of the operating temp range.

At 40°, the Ford stuff scores a 76 cSt viscosity, whereas most competing oils are in the 90-100 cSt range. This is confirmed by a higher stated viscosity index of 211 (ASTM D-2270), as compared to typically 160 or so for most other oils I'm looking at. So it should be about 30% thinner when cold.

For comparison, "most" other oils I'm looking at includes Valvoline SynPower 75W-90, Amsoil GL-4 75W-90, Mobil1 synthetic 75W-90 and Redline MT90. (The Redline comes closest to the Ford's low-temp viscosity, with a 90 cSt at 40°, but it's still a far cry.)



It also smells like strawberries*.






* = does not smell like strawberries.
Joe Perez is offline  
Old 01-22-2015, 06:05 PM
  #62  
Elite Member
iTrader: (21)
 
rleete's Avatar
 
Join Date: Jun 2007
Location: Rochester, NY
Posts: 6,597
Total Cats: 1,263
Default

Originally Posted by Joe Perez
does not smell like strawberries.
Should have written "tastes", without the disclaimer. If you were evil.
rleete is offline  
Old 01-22-2015, 06:21 PM
  #63  
Elite Member
iTrader: (37)
 
EO2K's Avatar
 
Join Date: Apr 2010
Location: Very NorCal
Posts: 10,441
Total Cats: 1,899
Default

Originally Posted by rleete
Should have written "tastes", without the disclaimer. If you were evil.
I keep telling people that putting Amsoil Dominator in their coffee keep them regular. I imagine it will make you violently ill, but I'm not going to find out
EO2K is offline  
Old 01-22-2015, 07:46 PM
  #64  
Boost Pope
Thread Starter
iTrader: (8)
 
Joe Perez's Avatar
 
Join Date: Sep 2005
Location: Chicago. (The less-murder part.)
Posts: 33,049
Total Cats: 6,608
Default

Originally Posted by EO2K
I keep telling people that putting Amsoil Dominator in their coffee keep them regular. I imagine it will make you violently ill, but I'm not going to find out
Speaking from first-hand experience, if one is assembling a VW engine in a barn in Florida, one should not place a styrofoam cup of Dr. Pepper on the workbench immediately next to an identical styrofoam cup of motor oil.

That having been said, 10W-30 is in fact a powerful laxative.
Joe Perez is offline  
Old 01-22-2015, 09:34 PM
  #65  
Elite Member
iTrader: (2)
 
Mobius's Avatar
 
Join Date: May 2008
Location: Portland, Oregon
Posts: 3,468
Total Cats: 365
Default

Aidan, the Ford dealer on 122nd.
Mobius is offline  
Old 01-22-2015, 10:26 PM
  #66  
SADFab Destructive Testing Engineer
iTrader: (5)
 
aidandj's Avatar
 
Join Date: Apr 2014
Location: Beaverton, USA
Posts: 18,642
Total Cats: 1,866
Default

Originally Posted by Mobius
Aidan, the Ford dealer on 122nd.
Thanks
aidandj is offline  
Old 01-23-2015, 10:12 AM
  #67  
Junior Member
 
robertcope's Avatar
 
Join Date: Aug 2010
Location: Texas
Posts: 162
Total Cats: 11
Default

Originally Posted by Joe Perez
The Ford spec sheet calls it a fully synthetic GL-4 75W-90, with a viscosity at 100°C of 15.4 cSt.
Very interesting specs. Looks really great. I may have to give this a try over MT-85 next year. Love that 211 VI.

robert
robertcope is offline  
Old 01-23-2015, 06:00 PM
  #68  
Boost Pope
Thread Starter
iTrader: (8)
 
Joe Perez's Avatar
 
Join Date: Sep 2005
Location: Chicago. (The less-murder part.)
Posts: 33,049
Total Cats: 6,608
Default

Originally Posted by robertcope

Very interesting specs. Looks really great. I may have to give this a try over MT-85 next year. Love that 211 VI.

robert
One presumes that the difference in low-temperature viscosity between Ford Unicorn Tears and every other GL-4 75W-90 is even more pronounced at extremely low temperatures, such as 0°C, than at the lowest published temperature of 40°C.

It's amazing stuff. I can't see myself using any other transmission oil in the foreseeable future.
Joe Perez is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
StratoBlue1109
Miata parts for sale/trade
21
09-30-2018 01:09 PM
leatherface24
Cars for sale/trade
15
10-16-2015 11:35 AM
ScrapinMX5
Meet and Greet
8
09-28-2015 01:04 PM
D_Breezy
Meet and Greet
5
09-08-2015 05:37 PM



Quick Reply: Lube my Tranny



All times are GMT -4. The time now is 09:27 AM.