ok to use this amsoil oil in my differential
01-03-2007, 11:04 AM
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ok to use this amsoil oil in my differential
01-03-2007, 01:52 PM
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The recommended oil for the diff (by Honda) is SAE 90 GL-5.
Regardless of outside temp.
If you are not living in a cold climate there is no need to use 75W-90, and with cold I mean overnight low temps of -11F and lower.
Allthough many use 75W-90, with good/great results, that oil does have some (IMO) drawbacks.
According to the Amsoil website the viscosity of that 75W-90 oil at 100C is 15.9 cSt.
A straight 90 weight oil like LE-607
has a viscosity of 20.96 cSt at the same temp (100C).
That is 31.8 % more. (starting with the 15.9)
Viscosity is not what really matters though.
EP or Extreme Pressure qualities do matter.
As RoadRage pointed out, in several posts about LE-607, the EP qualities of all mutligrade gear oils are lower then of straight grade oils and especially LE-607 has very high EP numbers.
The tests of the Amsoil 75W-90 oil were done according to ASTM D-3233, the LE-607 tests were done according to ASTM D-2782 so unfortunatly you can't compere the numbers.
So far I did find that the D-3233 test is done at room temp and the D-2782 test is done at 150C.
LE-607 is made by a company that makes industrial oils and I think the tests they run to prove how good their product is to the engineers that want to use the stuff are pretty tough.
Something to consider.
Regardless of outside temp.
If you are not living in a cold climate there is no need to use 75W-90, and with cold I mean overnight low temps of -11F and lower.
Allthough many use 75W-90, with good/great results, that oil does have some (IMO) drawbacks.
According to the Amsoil website the viscosity of that 75W-90 oil at 100C is 15.9 cSt.
A straight 90 weight oil like LE-607
has a viscosity of 20.96 cSt at the same temp (100C).That is 31.8 % more. (starting with the 15.9)
Viscosity is not what really matters though.
EP or Extreme Pressure qualities do matter.
As RoadRage pointed out, in several posts about LE-607, the EP qualities of all mutligrade gear oils are lower then of straight grade oils and especially LE-607 has very high EP numbers.
The tests of the Amsoil 75W-90 oil were done according to ASTM D-3233, the LE-607 tests were done according to ASTM D-2782 so unfortunatly you can't compere the numbers.
So far I did find that the D-3233 test is done at room temp and the D-2782 test is done at 150C.
LE-607 is made by a company that makes industrial oils and I think the tests they run to prove how good their product is to the engineers that want to use the stuff are pretty tough.
Something to consider.
01-03-2007, 03:27 PM
#5
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Not only can you use it, its fantastic gear oil. I used it a while back, and switched to LE because it was a tiny bit better. The rest of my car never sees anything but amsoil.
01-03-2007, 06:29 PM
#7
I use LE-607.
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01-04-2007, 09:33 AM
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