 | 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: Is this a Rear Main Seal Problem? 
05-04-07, 01:00 PM
|  | Maggied V = More than just an appliance. Cadillac(s): 2005 CTS-V  | | Join Date: Jan 2005 Location: South Lyon, MI Age: 61 | | | Is this a Rear Main Seal Problem?
Noticed this slight leakage near right rear of engine while changing oil today ...
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'05 CTS-V, Stealth Gray, Sunroof, 3M Clear Bra, B&M Shifter w/UUC Bushings, Specter Werkes Bushings, V Headrests, Wheel To Wheel Powertrain Tune, Corsa, Kooks w/Hi-Flo Cats, Ultimate Grid Pedals, Hotchkis Anti-Sways, STS-V Fogs, Ground Control 650R/600F, WW Clear Sidemarkers, Full-Size Spare, Magnuson SC Polished, CTS Console, FG2, Aggressive Street Alignment, MOMO Shift Knob, DSS/Hendrix Engrg Axles, UUC Flywheel. Soon: UUC MMs. 472 RWHP/411 RWTQ (Mustang dyno).
Last edited by rand49er; 07-16-08 at 12:02 PM.
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05-04-07, 01:13 PM
|  | Cadillac Owners Master Cadillac(s): '05 CTS-V | | Join Date: Jul 2004 Location: Elkridge, MD Age: 37 | | | Re: Is this a Rear Main Seal Problem?
Quote:
Originally Posted by rand49er  Noticed this slight leakage near right rear of engine while changing oil today ... | Your headers are scaring the oil right out of the pan. 
I just dropped my car off at Lindsay, for service. I have the exact same issue. I'll let you know what they tell me.
I'll be out of town untill 05-15, so I don't expect to get my car back until at least then. I also may not be around to update. I will if I can.
Thanks,
Chris
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2005 CTS-V:No Roof|FG2|Corsa|UUC Shifter, B-Lines, Motor/Tran Mounts, Diff Bushings|LPE CAI|FFV IntakeTube|Hawk HP+ |Hotchkis Sways|Kooks 1.75 Coated LTs + cats|KARS III |Mamofied Fast90 + NW90|224/228 111+0 XFI/XE-R .609/.588|ATI 25% UD Pulley|YT 1.7" UltraLites|Melling HiFlow Oil Pump|Comp Chromeoly 7.425" PR's|Cloyes Hex Adjust Timing Set|Lucas 42# Flow Matched Injectors|Patriot Gold Xtreme Springs, Ti retainers, Super 7 locks|All ARP Fasteners|Mustang Dyno Tuned (SAE): 412rwhp / 380 rwtq |
05-04-07, 01:57 PM
| | Maggied V = More than just an appliance. Cadillac(s): 2005 CTS-V | | Join Date: Jan 2005 Location: South Lyon, MI Age: 61 | | | Re: Is this a Rear Main Seal Problem?
Thanks, Chris. I'll be in San Francisco at that time, but will still be "in touch" with my laptop.  |
05-04-07, 06:08 PM
|  | Miss the track... Cadillac(s): 2007 CTS-V Thunder Gray w/ Lt Gray interior | | Join Date: Mar 2007 Location: Sunny CA. Age: 43 | | | Re: Is this a Rear Main Seal Problem?
Quote:
Originally Posted by rand49er Thanks, Chris. I'll be in San Francisco at that time, but will still be "in touch" with my laptop. | There are a few of us meeting up at a Hooters in Fremont (about 30 min. from SF) Wednesday, May 9th, at Noon.
Since your going to be in SF anyways, why not drop by.
-RZ
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B&B Headers and HF Cats, B&B exhaust, Hotchkis sways, CCW SP600's, Lightened Fly Wheel, UUC shifter and knob, Blue HVAC, Elite Catch Can, CTS Console, Vette FRC's, Ghetto V Oil cap... Future: Up to the Vendors and the group buys |
05-04-07, 08:47 PM
| | Maggied V = More than just an appliance. Cadillac(s): 2005 CTS-V | | Join Date: Jan 2005 Location: South Lyon, MI Age: 61 | | | Re: Is this a Rear Main Seal Problem?
Thanks, but I meant the following week, the 16th thru the 19th. Otherwise, I'd love to be there. Going with my wife and young son (4-1/2 yrs) to visit my stepson in Mountain View. He's at Google.
You guys ARE going to post pics ... ?!! |
05-04-07, 08:57 PM
| | Cadillac Owners Fanatic Cadillac(s): Cadillac | | | | | Re: Is this a Rear Main Seal Problem?
Generally no, oil will seep from the oil pan, rear cover mating points. |
05-04-07, 10:02 PM
| | Cadillac Owners Fanatic Cadillac(s): 2007 Yukon Denali / 2009 G8 GT | | Join Date: May 2005 Location: Macomb, MI Age: 36 | | | Re: Is this a Rear Main Seal Problem?
Just take it in Randy. You have a good dealer and know where to find me to ask about Don Gooley if needed. They have been great to me. |
05-05-07, 09:24 AM
|  | Das jus fo decorations Cadillac(s): 2006 CTS-V | | Join Date: Apr 2006 Location: Taxus | | | Re: Is this a Rear Main Seal Problem?
Wherever it's coming from it's not bad.
The bad thing about an oil leak is it could be coming from any point forward/above where you see it.
Valve covers, intake manifold, etc............
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05-05-07, 09:40 AM
| | Cadillac Owners Enthusiast Cadillac(s): CTS-V SERIES | | Join Date: Jul 2006 Location: BROOKLYN Age: 22 | | | Re: Is this a Rear Main Seal Problem?
i have very little "oil" coming out of the hole on her. But i'm not too worried about it yet. (Theres a square hole on the tran to let any water out if it had water in it.) But i'm sure its either trans fluid or motor oil. Rear main seal. I would clean it good and then watch where it comes from so you know. But if its under warrantty that bring it in. |
05-05-07, 10:23 AM
|  | Piaggio Pilot | | Join Date: Apr 2005 Location: Scottsdale, Arizona | | | Re: Is this a Rear Main Seal Problem?
Randy, I did an extensive search of that problem and discovered that when the ambient temperatures are at or near 0 Centigrade (32F) during those long cold Michigan winters, the rear seals in the LS6 engine shrink just enough to allow some seepage. Once the path has opened, the only solution is to relocate the device to Arizona where that never happens.
PS Miss you guys. |
05-05-07, 09:52 PM
| | Maggied V = More than just an appliance. Cadillac(s): 2005 CTS-V | | Join Date: Jan 2005 Location: South Lyon, MI Age: 61 | | | Re: Is this a Rear Main Seal Problem?
Quote:
Originally Posted by Flyboy ... PS Miss you guys. |  |
05-08-07, 11:55 AM
| | Maggied V = More than just an appliance. Cadillac(s): 2005 CTS-V | | Join Date: Jan 2005 Location: South Lyon, MI Age: 61 | | | Re: Is this a Rear Main Seal Problem?
Update:
Dealer says it's "controlled seepage."
Is that the opposite of the uncontrolled type teenage guys have? |
05-08-07, 12:02 PM
|  | Cadillac Owners Connoisseur Cadillac(s): 05 Stealth Gray V | | Join Date: Sep 2006 Location: Ft Myers FL | | | Re: Is this a Rear Main Seal Problem?
Premature.... Well you know.
I had my lifter at my mechanics the other day checkout the linkage for a shifter from the bottom side. And we were looking at the rear end. We noticed some oil moisture under there. Well long story short. The dealer told me that they had to put a extension on one of the hoses. I will have to check the service record for the exact terms but it was no big deal.
Gene |
05-08-07, 04:57 PM
|  | Cadillac Owners Connoisseur Cadillac(s): ~2004 CTS-V, 2006 STS-V, 2007 Escalade~ | | Join Date: Apr 2005 Location: Boston, MA | | | Re: Is this a Rear Main Seal Problem?
I'm just guessing here...... A real long shot...... But when you added the headers did you remove the dipstick tube? Not sure, but i think??? There is a very small O-ring that fits in there where the tube mates with the engine block. Perhaps you can get a flashlight up under there and take a good look to see if that is the source. |
05-08-07, 05:08 PM
| | Maggied V = More than just an appliance. Cadillac(s): 2005 CTS-V | | Join Date: Jan 2005 Location: South Lyon, MI Age: 61 | | | Re: Is this a Rear Main Seal Problem?
Whoa, austin, you may have something there!
The only problem is that when I went to put that bugger back in, I couldn't see ANYTHING up there flashlight or no flashlight.
VERY plausible explanation.  | | Cadillac Discussion Tools | | | 
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