Differential Fluid??
Thread Starter
Le Mans Master
Joined: Jan 2005
Posts: 5,479
Likes: 13
From: Dallas/Grand Prairie Texas
Differential Fluid??
Sorry for the ignorance, I just reciently had my tranni fluid changed, is there some fluid to change in the gears as well???
Also, should I redue the radi. fluid too since it's also used with the trani.??
2002 A4, 37,000 Dallas everyday driver.
Also, should I redue the radi. fluid too since it's also used with the trani.??
2002 A4, 37,000 Dallas everyday driver.
Last edited by JoshVette; Feb 8, 2005 at 02:42 PM.
Safety Car
Joined: Jan 2005
Posts: 4,799
Likes: 0
From: Lake Ridge VA
Differential (Gear) Oil: Mobile 1 75W-90 Synthetic (2 quarts) + 1 Bottle GM additive
I believe you can get the bottle of GM additive from any dealer or probably also from some of the forum vendors. The additive is to quiet the chatter some people hear from their differential.
I think there are other options, but this is just what I have in my files.
I believe you can get the bottle of GM additive from any dealer or probably also from some of the forum vendors. The additive is to quiet the chatter some people hear from their differential.
I think there are other options, but this is just what I have in my files.
Race Director
Joined: Oct 2002
Posts: 11,945
Likes: 12
From: Vancouver
2015 C5 of Year Finalist
St. Jude Donor '05-'06-'07-'08-'09-'10
I have it from the top that you should use synthetics from front to rear. Reason being it handles heat much better. Mobil 1 all round. Works for me.
Drifting
Joined: Sep 2002
Posts: 1,529
Likes: 53
From: Houston, TX
Your diff fluid doesn't need to be changed.... ever.... but if you wish to you won't harm anything. I did change mine. At 15K it was a bit dirty. Use a quality synthetic. If you go with Amsoil or Royal Purple, for example, you won't have to use the slip additive. Make sure you drive the car in tight figure-8s after the fluid change to properly coat the internals. There is a magnetic plug available for added peace of mind. If you still get clutch chatter, then add 4oz of the additive.
Radiator fluid also does not need changed till well over 100K, but again no damage if you do this now. Make sure you use the correct Dexcool fluid.
If you are a DIY'er, the rearend fluid is a very easy process. The coolant is more difficult to change if you want to get a 100% fluid change. Draining the radiator, flushing, draining, flushing, can take a lot of time. Depending on how often you plan to do this, you could DIY, or use a servicer.
Radiator fluid also does not need changed till well over 100K, but again no damage if you do this now. Make sure you use the correct Dexcool fluid.
If you are a DIY'er, the rearend fluid is a very easy process. The coolant is more difficult to change if you want to get a 100% fluid change. Draining the radiator, flushing, draining, flushing, can take a lot of time. Depending on how often you plan to do this, you could DIY, or use a servicer.
Thread Starter
Le Mans Master
Joined: Jan 2005
Posts: 5,479
Likes: 13
From: Dallas/Grand Prairie Texas
Well, it was in the shop for a trani issue (reaction shell broke) and so I got the upgraded reaction shell and some new trani fluid out of it.
I just thought I might want to redo the gears and radi. fluid while I was at it, so they'd all be new and not all old fluids and one new??
Will it make a difference for the car lasting me longer if I redo it all now or wait another 30,000 miles??
I just thought I might want to redo the gears and radi. fluid while I was at it, so they'd all be new and not all old fluids and one new??
Will it make a difference for the car lasting me longer if I redo it all now or wait another 30,000 miles??
Premium Supporting Vendor
Joined: Aug 2001
Posts: 5,364
Likes: 38
From: King George VA
AMSOIL recently came out with a new synthetic gear lube in 75w90 weight:
AMSOIL Severe Gear Synthetic Extreme Pressure (EP) 75w90 Lubricant
Preferred Customers save about 20%. Feel free to PM or email me and I can provide you with more info:
AMSOIL Preferred Customer Program
Related products:
Slip Lock Additive (note: I don't use this and my diff doesn't chatter)
AMSOIL Slip-Lock Differential Additive
Bottle Hand Pump:
AMSOIL G-2039 Bottle Hand Pump
AMSOIL Severe Gear Synthetic Extreme Pressure (EP) 75w90 Lubricant
Preferred Customers save about 20%. Feel free to PM or email me and I can provide you with more info:
AMSOIL Preferred Customer Program
Related products:
Slip Lock Additive (note: I don't use this and my diff doesn't chatter)
AMSOIL Slip-Lock Differential Additive
Bottle Hand Pump:
AMSOIL G-2039 Bottle Hand Pump
__________________
C66 Racing #66 NASA ST2, SCCA T2
AMSOIL Dealer (Forum Vendor)
AMSOIL Preferred Customer Program (Members buy at Wholesale - a savings of about 25%)
C66 Racing #66 NASA ST2, SCCA T2
AMSOIL Dealer (Forum Vendor)
AMSOIL Preferred Customer Program (Members buy at Wholesale - a savings of about 25%)
