[Healeys] trans oil

Bob Spidell bspidell at comcast.net
Mon Jun 14 07:25:59 MDT 2010


I don't quite understand this statement.  A different viscosity rating 
means, well, the oils have a different viscosity:

"Kinematic viscosity is graded by measuring the time it takes for a 
standard amount of oil to flow through a standard orifice, at standard 
temperatures. The longer it takes, the higher the viscosity and thus 
higher SAE code." -- Wikipedia

According to Redline, MT-90 is equivalent to 75W-90 gear oil or 15W-40 
motor oil--not 20W-50 as I recalled incorrectly--and MTL is equivalent 
to 70W-80 gear oil or 5W-30 motor oil. 

The differences may not be noticeable in the bottle, but they are 


Oudesluys wrote:
> Both MT-90, MTL, EP-90 and 20W50 should have about the same viscosity 
> as straight SAE30.
> Kees Oudesluijs
> NL
> Bob Spidell wrote:
>> MT-90 is a little thicker--equivalent, I think, to 20W-50.  MTL is 
>> about the same as 30W.
>> bs

Bob Spidell           San Jose, CA            bspidell at comcast.net


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