Not a scientific study but amsoil was cleaner after diff fluid change
08-29-2012, 03:54 PM
#11
Interesting. The last 3 seasons I was running Motul 300 at similar mileage and time intervals with similar sludge on the magnet, but this year I switched to Amsoil and will have put close to double the mileage and much harder driving (3 dragon trips and 2 track days, one autox)
08-29-2012, 04:39 PM
#12
Interesting. The last 3 seasons I was running Motul 300 at similar mileage and time intervals with similar sludge on the magnet, but this year I switched to Amsoil and will have put close to double the mileage and much harder driving (3 dragon trips and 2 track days, one autox)
08-29-2012, 04:43 PM
#13
Originally Posted by Billman250' timestamp='1346256629' post='21973481
So many opinions and views on oils and stuff....makes it hard...
All I know is my car has been on Mobil1 10w30, since 600 miles when it was new. I am now at 118k.
I couldnt be happier with my power output, compression, lack of oil burning. The car feels faster every year. I offer anyone to go for a ride with me in my car at a meet you wouldnt believe how fast it is until you sit in it.
All I know is my car has been on Mobil1 10w30, since 600 miles when it was new. I am now at 118k.
I couldnt be happier with my power output, compression, lack of oil burning. The car feels faster every year. I offer anyone to go for a ride with me in my car at a meet you wouldnt believe how fast it is until you sit in it.
. I`ll just take your word that it is a great fluid. 
08-29-2012, 05:13 PM
#14
08-30-2012, 08:00 AM
#15
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Time does nothing to dif fluid like it does engine oil, because there is no fuel dilution. Mileage is a primary key factor. How many miles? if its a few k miles, I would expect it to be clean.
I use Mobil1 75w90 in my car and ALL my customers.
Even at 40k miles on the fluid, the fluid come out like brand new. And I seriously mean brand new in appearance.
In addition, the magnet has virtually no trace of metal...not even a slight bit of grey paste. This is consistent car after car. This is my proof.
This has proven on hundreds of s2ks with all different setups, including mine (and you guys now how i drive mine) dragon, drifitng, autox, track, and it still comes out like brand new.
Say what you will about Amsoil. I'm sure it's great.
Everyone can take this to the bank...Mobil1 to me has been the ultimate fluid and I wouldn't even think of trying another with the amount of time I've spent with Mobil1.
Use Mobil1 75w90 with 100% confidence.
I use Mobil1 75w90 in my car and ALL my customers.
Even at 40k miles on the fluid, the fluid come out like brand new. And I seriously mean brand new in appearance.
In addition, the magnet has virtually no trace of metal...not even a slight bit of grey paste. This is consistent car after car. This is my proof.
This has proven on hundreds of s2ks with all different setups, including mine (and you guys now how i drive mine) dragon, drifitng, autox, track, and it still comes out like brand new.
Say what you will about Amsoil. I'm sure it's great.
Everyone can take this to the bank...Mobil1 to me has been the ultimate fluid and I wouldn't even think of trying another with the amount of time I've spent with Mobil1.
Use Mobil1 75w90 with 100% confidence.
09-29-2012, 03:13 PM
#16
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One of the things I like about my S2000 is how it powers out of corners.
This is IMO mostly due to the Torsen diff that will distribute power nicely between wheels rotating at different speeds while having equal grip.
To do this, the Torsen needs good oil with an adequate EP rating.
I've noticed what feels like a FWD oversteer reaction during cornering when the diff oil is on its way out.
Fresh oil fixed this straight away.
If I would pay someone to change my diff oil and the receipt would say Any Brand SAE 75W-90 I would show them the manual and point out the recommended SAE 90.
Reactions like "Oh yeah but this is just the same and I use it all the time" I would not accept, because it isnt.
A direct minimum replacement for the OEM recommended - but hard to find - SAE 90 GL-5/6 is SAE 75W-110.
75W-140 is also a good choice as is LE-1605 SAE 110.
Does this proof include the Torsen side washer "ears" you have reported to find on the magnet more than once?
I mean, if parts fail something is wrong, no?
In your case, with the amount of cars you service, you could easily get enough discount anywhere - even at Amsoil - to offer 75W-110 or 75W-110 diff oil at the sae price as Mobil1 oils to your customers.
And you would IMO provide an even better service doing so.
With respect
This is IMO mostly due to the Torsen diff that will distribute power nicely between wheels rotating at different speeds while having equal grip.
To do this, the Torsen needs good oil with an adequate EP rating.
I've noticed what feels like a FWD oversteer reaction during cornering when the diff oil is on its way out.
Fresh oil fixed this straight away.
If I would pay someone to change my diff oil and the receipt would say Any Brand SAE 75W-90 I would show them the manual and point out the recommended SAE 90.
Reactions like "Oh yeah but this is just the same and I use it all the time" I would not accept, because it isnt.
A direct minimum replacement for the OEM recommended - but hard to find - SAE 90 GL-5/6 is SAE 75W-110.
75W-140 is also a good choice as is LE-1605 SAE 110.
I mean, if parts fail something is wrong, no?
In your case, with the amount of cars you service, you could easily get enough discount anywhere - even at Amsoil - to offer 75W-110 or 75W-110 diff oil at the sae price as Mobil1 oils to your customers.
And you would IMO provide an even better service doing so.
With respect
09-29-2012, 03:43 PM
#17
SpitfireS and I seem to be the only persons who report a differnce in diff. performance with higher viscosity fluids, I agree that the operation of the LSD is affected by viscosity. I'm not saying that translates into lower wear though, but the operation of the LSD seems more predictable and stable when accelerating through corners with higher viscosity fluids.
09-30-2012, 12:06 AM
#18
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(Do I have to point it out?)
English ins't your first language...?
Anyway..
I'm sure many people notice it but they just do not realize it is not supposed to be like this.
Its a good excuse to upgrade suspension, wheels, tires, add x-braces and whatnot.
While all they need is better diff oil.
09-30-2012, 06:17 AM
#19
Originally Posted by JFUSION' timestamp='1348962222' post='22046938
SpitfireS and I seem to be the only persons who report a differnce in diff. performance with higher viscosity fluids...
(Do I have to point it out?)
English ins't your first language...?
Anyway..
I'm sure many people notice it but they just do not realize it is not supposed to be like this.
Its a good excuse to upgrade suspension, wheels, tires, add x-braces and whatnot.
While all they need is better diff oil.
09-30-2012, 07:51 AM
#20
Registered User
SpitfireS and I seem to be the only persons who report a differnce in diff. performance with higher viscosity fluids, I agree that the operation of the LSD is affected by viscosity. I'm not saying that translates into lower wear though, but the operation of the LSD seems more predictable and stable when accelerating through corners with higher viscosity fluids.