| 2004-2007 Cadillac CTS-V General Discussion Discuss everything about the first generation Cadillac CTS-V that does NOT fall into either the Performance or Appearance Modification category. | Cadillac Forums: AMSOIL or RP in diff 
04-09-08, 04:20 PM
|  | Cadillac Owners Enthusiast Cadillac(s): 2007 CTS-V (Thunder Grey)  | | Join Date: Dec 2005 Location: Sacramento Kalifornia Age: 59 | | | Re: AMSOIL or RP in diff
Quote:
Originally Posted by GMBOUND  I just bought Amsoil, a couple of hours ago. | I run AMSOIL also.... |
06-04-08, 03:56 PM
|  | Drive It. Break It. Build it Better Cadillac(s): Platinum 2004 CTS-V | | Join Date: Apr 2008 Location: Indiana | | | Re: AMSOIL or RP in diff
What weight are you guys using for the AMSOIL? I live in Indiana. It will be sitting in winter.
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06-04-08, 06:53 PM
|  | <10 poasts, CF newbie Cadillac(s): 2007 CTS-V Thunder Gray w/ Lt Gray interior | | Join Date: Mar 2007 Location: Sunny CA. Age: 43 | | | Re: AMSOIL or RP in diff
75W 90 Severe gear in mine but I'm in CA.
Looks like the next fluid change in my diff will be by the dealer tomorrow.
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06-04-08, 07:29 PM
| | Cadillac Owners Connoisseur Cadillac(s): Kooks,MOMO seats,C5 hubs,3489# | | Join Date: Jun 2007 Location: Ashland, Ohio | | | Re: AMSOIL or RP in diff
I drive mine all year around. We'll see a couple of weeks worth of 20F and a few nights in the single digits. Currently running 75/140 and probably go back to 75/90 for winter.
Norm |
06-04-08, 10:33 PM
| | BLING IS AMERICAN RICE Cadillac(s): '04 CTS-V | | Join Date: Jun 2004 Location: Just North of Titletown... | | | Re: AMSOIL or RP in diff
RedLine works for me...
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06-04-08, 11:08 PM
|  | Cadillac Owners Enthusiast Cadillac(s): 2004 CTSV | | Join Date: Apr 2004 Location: Denver | | | Re: AMSOIL or RP in diff
Just changed my new differential @ 6,200 miles last weekend. Used GM synthetic with additive at $24/qt wholesale. Old fluid I drained looked fine. There was a little buildup of what looked like break-in grease on the plug - but that was it. |
06-04-08, 11:30 PM
| | Cadillac Owners Fanatic Cadillac(s): Cadillac | | | | | Re: AMSOIL or RP in diff
how hard is it to change the rear end diff fluid? what do i need to do? |
06-04-08, 11:50 PM
| | Cadillac Owners Fanatic Cadillac(s): 2005 CTS-V | | Join Date: Feb 2008 Location: Central Illinois Age: 37 | | | Re: AMSOIL or RP in diff
Its easy to change. You need a 10mm allen socket and a drain pan. Filling it up is what sux. I recommend getting a suction gun to fill it up with. I did it with a tube attached to the bottle of rear end lube but it was messy. I believe there are instructions in the FAQ. Next time I will use the suction gun and be done in 10 minutes no mess. I used Royal Purple. |
06-04-08, 11:51 PM
| | Cadillac Owners Fanatic Cadillac(s): '05 Platinum V | | Join Date: Mar 2008 Location: League City, Texas | | | Re: AMSOIL or RP in diff
Having dealer service diff tomorrow while in for other warranty items... I bought a couple qts of RP 75/90 that I'll have them put in... currently experiencing some whine, so I'll reply afterwards
-shannon |
06-04-08, 11:57 PM
| | Cadillac Owners Fanatic Cadillac(s): 2005 CTS-V | | Join Date: Feb 2008 Location: Central Illinois Age: 37 | | | Re: AMSOIL or RP in diff
Quote:
Originally Posted by SS from the "Wood" Having dealer service diff tomorrow while in for other warranty items... I bought a couple qts of RP 75/90 that I'll have them put in... currently experiencing some whine, so I'll reply afterwards
-shannon | I had some whine when I changed mine. It didn't quiet it down any. I am currently trying to get the dealer to replace my diff. |
06-05-08, 12:18 AM
|  | Cadillac Owners Connoisseur Cadillac(s): BANK OWNED!! CTSV & EXT | | Join Date: Feb 2006 Location: Asheboro, NC Age: 28 | | | Re: AMSOIL or RP in diff
Quote:
Originally Posted by Jayrcr3 Its easy to change. You need a 10mm allen socket and a drain pan. Filling it up is what sux. I recommend getting a suction gun to fill it up with. I did it with a tube attached to the bottle of rear end lube but it was messy. I believe there are instructions in the FAQ. Next time I will use the suction gun and be done in 10 minutes no mess. I used Royal Purple. |
Suction gun is the only way to go. I did my rear with a pump, but after doing the tranny with the gun I won't go back.
Jon |
06-05-08, 02:10 AM
| | <10 poasts, CF newbie Cadillac(s): 2007 CTS-V Thunder Gray w/ Lt Gray interior | | Join Date: Mar 2007 Location: Sunny CA. Age: 43 | | | Re: AMSOIL or RP in diff
What ever you do don't use that Royal purple Syncro Mesh in the trannsmission. AmsOil in mine now, what a difference, Shifts like it should. |
06-05-08, 08:46 AM
| | Drive It. Break It. Build it Better Cadillac(s): Platinum 2004 CTS-V | | Join Date: Apr 2008 Location: Indiana | | | Re: AMSOIL or RP in diff
I've used RedLine Trans Fluids in my Jeeps (I think it was like MTL-90 or something like that) and it makes a huge improvement in the way it shifts....very easy on the syncros. Never tried their gear lube in the diff. I may do that since it's alot easier to get ahold of than Amsoil. How often are you guys changing your diff fluid? Every 5k?
I suggest getting a socket with the 10mm allen head attachment on it. MUCH easier to get up into the fill bolt. I have B&B 3" exhaust and couldn't get my hands in there with the regular allen wrench. Drain plug, no problem. |
06-05-08, 08:24 PM
| | Cadillac Owners Member Cadillac(s): Cadillac | | | | | Re: AMSOIL or RP in diff
Anyone try Redline Shock Proof?
I have though about putting in some shock proof light wieght when my car finally get shipped up here. It is a 75 140. I have a bunch in my shop for my race car. It does mention that it is for dog ring gear boxes and that is all I have used it in. |
06-05-08, 11:48 PM
| | Cadillac Owners Member Cadillac(s): Cadillac | | | | | Re: AMSOIL or RP in diff
Quote:
Originally Posted by SS from the "Wood" Having dealer service diff tomorrow while in for other warranty items... I bought a couple qts of RP 75/90 that I'll have them put in... currently experiencing some whine, so I'll reply afterwards
-shannon | Which dealer- Carter? I need some work done too, are they friendly to a modded car?
BTW- your car looks really low, what did you use?
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