Diff fluid from Honda question
05-29-2011, 04:52 PM
#12
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Thanks JFUSION for your reply.
The manual says:
Hypoid gear oil
API classification GL5 or GL6,
Viscosity: SAE 90
Is the viscosity of the 80w90 SAE 80 or SAE 90 ?
I think it's SAE 90 according to some searches I did.
It does say on the bottle that this oil is for differential. It also says that it's GL5 and if I'm correct that it's SAE 90 then it should follow all the requirements specified in the manual.
The manual says:
Hypoid gear oil
API classification GL5 or GL6,
Viscosity: SAE 90
Is the viscosity of the 80w90 SAE 80 or SAE 90 ?
I think it's SAE 90 according to some searches I did.
It does say on the bottle that this oil is for differential. It also says that it's GL5 and if I'm correct that it's SAE 90 then it should follow all the requirements specified in the manual.
05-29-2011, 06:30 PM
#14
Thanks JFUSION for your reply.
The manual says:
Hypoid gear oil
API classification GL5 or GL6,
Viscosity: SAE 90
Is the viscosity of the 80w90 SAE 80 or SAE 90 ?
I think it's SAE 90 according to some searches I did.
It does say on the bottle that this oil is for differential. It also says that it's GL5 and if I'm correct that it's SAE 90 then it should follow all the requirements specified in the manual.
The manual says:
Hypoid gear oil
API classification GL5 or GL6,
Viscosity: SAE 90
Is the viscosity of the 80w90 SAE 80 or SAE 90 ?
I think it's SAE 90 according to some searches I did.
It does say on the bottle that this oil is for differential. It also says that it's GL5 and if I'm correct that it's SAE 90 then it should follow all the requirements specified in the manual.
An 80w90 fluid will satisfy the requirements of SAE90, it will flow better at lower temps but still protect well at higher temps, being GL-5 or 6 is good.
Now let me throw a wrench into the discussion. When the Honda S2000 was first engineered the SAE90 spec was in place, then a few years later the classification of fluids was changed and they put 110 in the previous range of SAE90. Thus today's 110 is closer to the SAE90 viscosity that was in place when the s2k was developed as of the year 1999. The 75w90 and 80w90 fluids you get today are on the thinner spec range of the previous (old) SAE90 spec, they are still in that range but it is on the lower end of the spec. Today's 110 fluid is more in the middle to high end of the old SAE90 spec range. LE now offers a 110 fluid, and I was running Amsoil's 75w110 fluid. That's not to say that there is anything wrong with the other fluids but I just think running a fluid like 75w110 is a better match to the old SAE90 spec. I hope that I haven't confused things more than needed here.
05-29-2011, 07:10 PM
#15
Former Moderator
This is what Puddy Mod Racing said to use on my rebuilt 1.5+ diff with the OS Giken LSD:
Ben seems to like a high viscosity Amsoil blend.
Break in,
Use 8 to 10 oz of Amsoil SAE 250 in the rear and a good quality GL-5 Hypoid 75/110 gear oil in the rear. Use this oil in the rear for 500 miles then drain.
Use 8 to 10 oz of Amsoil SAE 250 in the rear along with Amsoil synthetic severe Gear 75/110 gear oil every 6K miles.
When you receive the rear, fill it with about 22oz of 75/110. There is 8oz of Amsoil SAE 250 in the rear already. This mix should quiet the LSD and gears pretty good and provide added shock protection. Be sure not to over fill the rear, fill the rear until the oil starts to come back out of the fill hole. Replace the fill bolt once the oil slows to a light trickle
More Break in:
Drive the car like a civilized human for 300 miles, after 300 miles the rear is fully broke in and “normal” driving can begin.
You can use the Red Line to top off the diif when you get it if that is what you have on hand. 75/90 75/140 Red line will do.
As to [race car] break in just be sure to get the rear up to operating temp before hammering on it also you should do at least a few heat cycles since the gears are new. A heat cycle is bringing the rear up to operating temp (about 15miles) then letting it cool back down to ambient temp, about 12 hours.
Use 8 to 10 oz of Amsoil SAE 250 in the rear and a good quality GL-5 Hypoid 75/110 gear oil in the rear. Use this oil in the rear for 500 miles then drain.
Use 8 to 10 oz of Amsoil SAE 250 in the rear along with Amsoil synthetic severe Gear 75/110 gear oil every 6K miles.
When you receive the rear, fill it with about 22oz of 75/110. There is 8oz of Amsoil SAE 250 in the rear already. This mix should quiet the LSD and gears pretty good and provide added shock protection. Be sure not to over fill the rear, fill the rear until the oil starts to come back out of the fill hole. Replace the fill bolt once the oil slows to a light trickle
More Break in:
Drive the car like a civilized human for 300 miles, after 300 miles the rear is fully broke in and “normal” driving can begin.
You can use the Red Line to top off the diif when you get it if that is what you have on hand. 75/90 75/140 Red line will do.
As to [race car] break in just be sure to get the rear up to operating temp before hammering on it also you should do at least a few heat cycles since the gears are new. A heat cycle is bringing the rear up to operating temp (about 15miles) then letting it cool back down to ambient temp, about 12 hours.
05-29-2011, 09:13 PM
#17
This is for GL
http://www.finalube.com/reference_ma...Categories.htm
and LE is a manufacturer
http://www.le-international.com/content.aspx?id=17
ROD
http://www.finalube.com/reference_ma...Categories.htm
and LE is a manufacturer
http://www.le-international.com/content.aspx?id=17
ROD
05-30-2011, 01:55 PM
#18
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There arent too many SAE90 fluids out there, LE was one of the only manufacturers that I seen making it and definitely not any over the counter fluids. The funny part is that Honda spec'd SAE90 fluid but they never produced such a fluid.
An 80w90 fluid will satisfy the requirements of SAE90, it will flow better at lower temps but still protect well at higher temps, being GL-5 or 6 is good.
Now let me throw a wrench into the discussion. When the Honda S2000 was first engineered the SAE90 spec was in place, then a few years later the classification of fluids was changed and they put 110 in the previous range of SAE90. Thus today's 110 is closer to the SAE90 viscosity that was in place when the s2k was developed as of the year 1999. The 75w90 and 80w90 fluids you get today are on the thinner spec range of the previous (old) SAE90 spec, they are still in that range but it is on the lower end of the spec. Today's 110 fluid is more in the middle to high end of the old SAE90 spec range. LE now offers a 110 fluid, and I was running Amsoil's 75w110 fluid. That's not to say that there is anything wrong with the other fluids but I just think running a fluid like 75w110 is a better match to the old SAE90 spec. I hope that I haven't confused things more than needed here.
An 80w90 fluid will satisfy the requirements of SAE90, it will flow better at lower temps but still protect well at higher temps, being GL-5 or 6 is good.
Now let me throw a wrench into the discussion. When the Honda S2000 was first engineered the SAE90 spec was in place, then a few years later the classification of fluids was changed and they put 110 in the previous range of SAE90. Thus today's 110 is closer to the SAE90 viscosity that was in place when the s2k was developed as of the year 1999. The 75w90 and 80w90 fluids you get today are on the thinner spec range of the previous (old) SAE90 spec, they are still in that range but it is on the lower end of the spec. Today's 110 fluid is more in the middle to high end of the old SAE90 spec range. LE now offers a 110 fluid, and I was running Amsoil's 75w110 fluid. That's not to say that there is anything wrong with the other fluids but I just think running a fluid like 75w110 is a better match to the old SAE90 spec. I hope that I haven't confused things more than needed here.
Next time I chose the diff fluid I'll go with 75w110.
Should I be good then to run with the current fluid for 15K miles as specified by the manual ?
05-30-2011, 07:21 PM
#19
Originally Posted by JFUSION' timestamp='1306722656' post='20629668
There arent too many SAE90 fluids out there, LE was one of the only manufacturers that I seen making it and definitely not any over the counter fluids. The funny part is that Honda spec'd SAE90 fluid but they never produced such a fluid.
An 80w90 fluid will satisfy the requirements of SAE90, it will flow better at lower temps but still protect well at higher temps, being GL-5 or 6 is good.
Now let me throw a wrench into the discussion. When the Honda S2000 was first engineered the SAE90 spec was in place, then a few years later the classification of fluids was changed and they put 110 in the previous range of SAE90. Thus today's 110 is closer to the SAE90 viscosity that was in place when the s2k was developed as of the year 1999. The 75w90 and 80w90 fluids you get today are on the thinner spec range of the previous (old) SAE90 spec, they are still in that range but it is on the lower end of the spec. Today's 110 fluid is more in the middle to high end of the old SAE90 spec range. LE now offers a 110 fluid, and I was running Amsoil's 75w110 fluid. That's not to say that there is anything wrong with the other fluids but I just think running a fluid like 75w110 is a better match to the old SAE90 spec. I hope that I haven't confused things more than needed here.
An 80w90 fluid will satisfy the requirements of SAE90, it will flow better at lower temps but still protect well at higher temps, being GL-5 or 6 is good.
Now let me throw a wrench into the discussion. When the Honda S2000 was first engineered the SAE90 spec was in place, then a few years later the classification of fluids was changed and they put 110 in the previous range of SAE90. Thus today's 110 is closer to the SAE90 viscosity that was in place when the s2k was developed as of the year 1999. The 75w90 and 80w90 fluids you get today are on the thinner spec range of the previous (old) SAE90 spec, they are still in that range but it is on the lower end of the spec. Today's 110 fluid is more in the middle to high end of the old SAE90 spec range. LE now offers a 110 fluid, and I was running Amsoil's 75w110 fluid. That's not to say that there is anything wrong with the other fluids but I just think running a fluid like 75w110 is a better match to the old SAE90 spec. I hope that I haven't confused things more than needed here.
Next time I chose the diff fluid I'll go with 75w110.
Should I be good then to run with the current fluid for 15K miles as specified by the manual ?
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