[Z06] Amsoil Differential Fluid Change
Thread Starter
Intermediate
Joined: Dec 2006
Posts: 37
Likes: 0
Amsoil Differential Fluid Change
Do I need to add friction modifier to Amsoil Severe Gear SAE 75W-90 Synthetic Extreme Pressure Lubricant? '04 C5 Z06, 85K, no chatter or issues but drain plugs appear that there has been no change. I read some that add modifier and others who do not. The bottle says "If limited slip chatter occurs, add AMSOIL Slip-Lock additive."
If that's the case and I have no chatter, I may pass and take it to
100k and go factory. Also have plan to drop tranny fluid and go Amsoil, hear that improves smoothness.
Appreciate opinions.
If that's the case and I have no chatter, I may pass and take it to
100k and go factory. Also have plan to drop tranny fluid and go Amsoil, hear that improves smoothness.
Appreciate opinions.
Safety Car
Joined: Oct 2003
Posts: 3,699
Likes: 16
From: Sun City- Menifee Calif.
I just chaanged mine with Mobil 1 syn. Look for the letters L S on the bottle, that means it has the additive . If not then you will probably have to add it. Diff takes aprox. 1.7 -1.8 QT.total. Be careful not to over fill. Or it will blow out the vent on top & appear to be leaking.
Drifting
Joined: Nov 2008
Posts: 1,450
Likes: 140
From: Palm Beach Florida
The Amsoil has a little in the sever gear. You would only add it if you had some chatter afterwards. I just swapped out to Amsoil Sever gear EP in my 4th c5. If it were low mls I would add 1 bottle. Some c6's need two. I suspect you will be fine w/ just the fluid. I just did my trans also and was advised to use the Amsoil Torque drive because it doesn't degrade w/ heat and has a high shear. Very smooth no issues, I used to use their ATF.
Drifting
Joined: Nov 2008
Posts: 1,450
Likes: 140
From: Palm Beach Florida
You'll need one gallon of the Torque Drive and you'll have a little left over. And 2 qts. of sever gear I always buy three in case I have to drain some out to add the limited slip afterwards then I can top off. When doing the rear diff. fill till it overflows then let it drip out don't put in the fill plug. I then take a syringe and pull some out to just below the fill hole about a 1/8 inch. The reason has been found to prevent pressure from when it gets hot and expands and prevents the blow off from the vent and also pushing the fluid past a weak seal under pressure. I also thought I had the dreaded driver side seal leak and was advised to see if i was overfilled. I swapped my fluid and I was overfilled. Did the above and leak was gone. Good luck. The trans fill till it overflows and your done, don't forget to plug back in the trans temp sensor.
