Driving with Amsoil SAE 190 gear oil

[SpitfireS]

Early this week the Amsoil SAE 190 finaly made it across the big pond and on tuesday afternoon it went in my aftermarket geared diff of my Honda S2000.

Honda specs a SAE 90 for the diff, Richmond recommends a 75W-140 for its gear sets.
This syn single grade will be more shear stable then the multi visc oil and pre June '05 this Amsoil would have been labelled a single grade SAE 140 anyway.
A win/win IMO.

Those Richmond Gear gears do whine quite a bit at certain specific constant road speeds (feathering the throttle) and "hummm" when accelerating.
That's al normal.
Its a 32/7 ring & pinion.

With the Amsoil SAE 190 the whining at 86 km/h is slightly less then before (dino 75W-140) and the second peak at 115 km/h is almost gone.
Accelerating the "hummm" is definitely less.
Driving with cold oil didn't produce any noise from the Torsen LSD unit, not even at tight slow speed corners.

I know its only been 2 days but so far its working.

 

[oilboy123]

Seems kinda thick, but glad it works for ya. So this is a race application?

 

[JHZR2]

If it is too cold, those heavy oils can channel, reducing protection... But I assume your use profile doesnt include below freezing conditions.

JMH

 

[Pablo]

Good to hear that.

Indeed it is viscous, but SRN does have a pour point of -30°C. The real warning here is: Don't try this with NON-synthetic SAE 190.

 

[SpitfireS]

Originally Posted By: oilboy123
So this is a race application?

The Honda S2000 is a 240 hp convertable.
It only has a 7" ring gear and the diff holds 800ml of oil.
With a temp probe I've measured up to 70C on the outside of the diff after some spirited acceleration.

With the 4.10 final drive it does 0-100km/h in 6.2 seconds, with the 4.57's (and my lightend flywheel) I guess its somewhere around 5.6-5.8

I wouldn't call it a race application all the time but I've been to the track twice and I want to go again as soon as spring kicks in this year.
Better safe then sorry.

 

[SpitfireS]

Originally Posted By: JHZR2
If it is too cold, those heavy oils can channel, reducing protection... But I assume your use profile doesnt include below freezing conditions.

JMH

I was just about to post what Pablo allready posted: the Amsoil has a pourpoint of -30C.
That's more then the car will see in the Netherlands.
The (I think dino) 75W-140 I used before only had a pour point of -12C.

Single grade syn oils, in the higher grades, are nowhere to be found where I live.
Shipping wasn't cheap (understatement

) but I really wanted this oil.

 

[Pablo]

Lemme tell you - I made NO money shipping gear oil to the Netherlands....

Free Trade? Hmm.....The USA really has no tarriffs, relatively speaking, but our Post Office sure is screwed up! (Health care coming soon) UPS is good, but very expensive (big company humping the little guy)

All said - I would ship to Europe again. There is a chance of a free beer if I show up in person.