dana or sterling
dana or sterling
Posting Guru
Joined: Nov 2003
Posts: 1,931
Likes: 5
From: Allen, Tx
And the old book says:
Single rear wheel is Sterling/Visteon 10.5" ring , 7 pints of 75W140 synthetic gear oil, Ford part XY-75W140–QL
Dual Rear Wheel is Dana 80 11.25" ring, 8.5 pints of 75W90 of synthetic gear oil, Ford part XY-75W90–GLS
Add 8 ounces of Additive Friction Modifier XL-3or equivalent for a limited slip axle.
Single rear wheel is Sterling/Visteon 10.5" ring , 7 pints of 75W140 synthetic gear oil, Ford part XY-75W140–QL
Dual Rear Wheel is Dana 80 11.25" ring, 8.5 pints of 75W90 of synthetic gear oil, Ford part XY-75W90–GLS
Add 8 ounces of Additive Friction Modifier XL-3or equivalent for a limited slip axle.
Posting Guru
Joined: Nov 2003
Posts: 1,931
Likes: 5
From: Allen, Tx
Look at your door pillar certification label under "AXLE" (lower right hand corner of label) if your axle type is two numbers, you have a regular open diff, if you have a letter and a number (eg. C1) then you have a limited slip. (Ford calls it TRACTION-LOK).
If you no longer have a cert. label, look on the upper right side of the axle diff cover, there will be a metal tag attached with one of the cover bolts. On the second line first position, the gear ratio line will tell you what you have.
3 L 73 is a 3.73 limited slip, 3 73 is a regular open diff.
Mine looks like this:
3V 425F
3 L73 10 5 3E06
3V is the Sterling Heights, Mi Visteon plant
425F is the axle model and revision
3 L 73 is Limited slip 3.73 ratio.
10 5 is the size of the ring gear; 10.5 inches
3E06 is the manufacture date code (May 6th 2003)
3 is for 2003
E is the month of May (A=Jan, B=feb, C=mar etc..)
06 is the day.
If you no longer have a cert. label, look on the upper right side of the axle diff cover, there will be a metal tag attached with one of the cover bolts. On the second line first position, the gear ratio line will tell you what you have.
3 L 73 is a 3.73 limited slip, 3 73 is a regular open diff.
Mine looks like this:
3V 425F
3 L73 10 5 3E06
3V is the Sterling Heights, Mi Visteon plant
425F is the axle model and revision
3 L 73 is Limited slip 3.73 ratio.
10 5 is the size of the ring gear; 10.5 inches
3E06 is the manufacture date code (May 6th 2003)
3 is for 2003
E is the month of May (A=Jan, B=feb, C=mar etc..)
06 is the day.
Posting Guru
Joined: Nov 2002
Posts: 2,440
Likes: 0
From: Ventura County, CA
Cheyjoshua,
Since I just replaced the rear gear oil on my '02 F250 with 3.73 Limited Slip (LS), I can offer you the fruits of my labor:
Royal Purple ($8/qt. @ Jeg's) and Amsoil ($12/qt @ Jeg's) do not require the frictioin additive. Both already have it in them. These are the best prices I could find. With handling charge and free shipping, I paid Jeg's $40.35 for 4 qts. of Royal Purple Max Gear Oil (75w-140).
You can use other gear oils, but you will have to carefully read their labels to determine if you need to add the friction additive or not. The friction additive is fairly inexpensive ($4-$5) and can be found at AutoZone, Kragan's, etc.
Hope this helps...
Since I just replaced the rear gear oil on my '02 F250 with 3.73 Limited Slip (LS), I can offer you the fruits of my labor:
Royal Purple ($8/qt. @ Jeg's) and Amsoil ($12/qt @ Jeg's) do not require the frictioin additive. Both already have it in them. These are the best prices I could find. With handling charge and free shipping, I paid Jeg's $40.35 for 4 qts. of Royal Purple Max Gear Oil (75w-140).
You can use other gear oils, but you will have to carefully read their labels to determine if you need to add the friction additive or not. The friction additive is fairly inexpensive ($4-$5) and can be found at AutoZone, Kragan's, etc.
Hope this helps...
