Oil usage
Cadillac
 

Cadillac Forums | Help Us Help You | Advertise | Cadillac Parts | Cadillac News | Cadillac Classifieds / (Old System)

Cadillac Technical Archive | Cadillac Dealers | Cadillac Reviews | Cadillac Dealer Reviews | Cadillac Vendors

CadillacForums.com is the premier Cadillac Forum on the internet. Registered Users do not see the above ads.
+ Reply to Thread
Results 1 to 11 of 11
Cadillac CTS First Generation Forum - 2003 - 2007 Discussion, Oil usage in Cadillac CTS Coupe, Sport Sedan and Sport Wagon Forums; I have an 05 with the V-6. I took a trip last weekend and drove 1700 miles. Used 2 quarts ...
  1. #1
    Samorkand is offline Cadillac Owners Member
    Automobile(s): 2005 CTS
    Join Date
    Feb 2013
    Age
    41
    Posts
    8

    Oil usage

    I have an 05 with the V-6. I took a trip last weekend and drove 1700 miles. Used 2 quarts of oil. I knew about the higher oil usage on these cars but that seems a bit excessive to me. I remember reading about a catch can or something on here awhile back but cant remember the name of it. Does it really help? Anyone have a link to what they used and had the best results with? At 7 dollars a quart and 1 quart every 1000 miles or so I think it would be a wise investment.

  2. Remove Advertisements
    CadillacForums.com
    Advertisements
     

  3. #2
    curtc's Avatar
    curtc is offline OCD - Obsessive Cadillac Disorder
    Automobile(s): White Diamond 06 STS V8 RWD 1SF F55 HUD/ACC NAV - 126k
    Join Date
    Jul 2005
    Location
    Burnsville, MN
    Age
    28
    Posts
    5,471

    Re: Oil usage

    The catch can does NOT stop the oil consumption, it just stops it from being sucked into the intake...You need to look into the PCV mod to address the oil useage issue.
    Past Cadillac's

    2004 CTS 3.6L - 2011-2012
    2001 Seville Touring Sedan - 2006-2011
    1995 Seville Touring Sedan - 2005-2006

  4. #3
    ztollon's Avatar
    ztollon is offline Cadillac Owners Fanatic
    Join Date
    Aug 2012
    Posts
    403
    You may have excessive sludge build up inside your engine, not allowing the piston rings to properly wipe the oil from the cylinder walls burning it in the cumbustion process. A good engine clean paired with the catchcan and 7/64 drill mod to the pcv should help out. I believe it doesn't allow as much pressure to build u inside the crankcase, therefore saving more oil from being sucked out. I did the mod and I still burn oil just not quite as much..

  5. #4
    Samorkand is offline Cadillac Owners Member
    Automobile(s): 2005 CTS
    Join Date
    Feb 2013
    Age
    41
    Posts
    8

    Re: Oil usage

    Whats the best way to clean the engine? I looked up the PCV mod and looks easy enough.

  6. #5
    ztollon's Avatar
    ztollon is offline Cadillac Owners Fanatic
    Join Date
    Aug 2012
    Posts
    403
    Buy a cleaning agent. (non diesel or kerosene base, which i dont even think they make anymore) If you go to autozone or whatever they will have a few to choose from.

  7. #6
    Kael's Avatar
    Kael is offline Cadillac Owners Connoisseur
    Automobile(s): The Mighty Kael, 2004 Black CTS, Every Option
    Join Date
    Jul 2005
    Location
    IL
    Posts
    2,413

    Re: Oil usage

    you can always do the Seafoam trick. the bottle should be at nearly every parts store. looks like this:
    http://www.autobarn.net/sea-foam-eng...FZBaMgodVQUAtA

    you take the vacuum line off of the brake booster and suck up a third of the bottle (pour into a cup or something) the car will sputter when the fluid is all sucked up. turn the engine off, let it sit for 15 min then (after reattaching the brake booster line) fire the engine back up.
    Hey look at that, a ton of black smoke. Thats the carbon in your engine getting cleaned.


    Now, I have always been told to change out your spark plugs after you do this since you might foul them. I did when I did the procedure, some members on the forum have gotten away with not changing the plugs, good for them. I dunno.

  8. #7
    ztollon's Avatar
    ztollon is offline Cadillac Owners Fanatic
    Join Date
    Aug 2012
    Posts
    403
    That cleans the fuel system, intake mani, valves and combustion chamber and yes gets rid of carbon, But will not do anything for oil consumption. You can add a portion of that seafoam in the crankcase a day or two before an oil change, it will work as a engine clean/flush. As for fouling out you plugs, your adding way to much cleaner at one time, can also cause hydro-lock so dont just dump it in.

  9. #8
    DavidBoren's Avatar
    DavidBoren is offline Cadillac Owners Enthusiast
    Automobile(s): Volant, VMAX, RX catch can, tranny cooler... RIP
    Join Date
    Jul 2012
    Location
    Portland, OR
    Age
    29
    Posts
    508

    Re: Oil usage

    And burning all of that crap out plays hell on your cats. Catalytic converters are expensive. Especially on a Cadillac. Sure, you can get universal hi-flow cats for cheaper than OEM. But I have heard of the hi-flows pissing off your O2 sensors and throwing codes. If it throws a code, it no longer passes DEQ.

    Adding it to the oil, before an oil change sounds like a better idea. That way the crap is drained out the system, not burned out.

    A clean engine should not use as much oil. Cleaning the engine will hopefully allow the piston rings to seal better. Thusly, less oil will seep past the rings into the combustion chambers.

    A catch can will certainly help less oil make it to your combustion chambers from the intake side.

    The only thing that has a chance at fixing it is the PCV mod, which addresses an actual mechanical problem. The PCV metering tube is sub-par, and allows excessive pressure to build up in the crankcase. This excessive pressure is what makes oil get pulled through the PCV system. This piece of crap metering tube also cannot deal with the amount of oil that gets pulled through (due to the pressure the piece of crap metering tube causes). Drilling it out eliminates at least some of the excess pressure, and allows the oil to at least pass through the PCV system correctly. Correctly being, the oil goes to the combustion chambers. The catch can prevents the oil from being burnt, but still allows for a closed loop PCV system as per modern emissions standards.

  10. #9
    ztollon's Avatar
    ztollon is offline Cadillac Owners Fanatic
    Join Date
    Aug 2012
    Posts
    403
    Quote Originally Posted by DavidBoren View Post
    And burning all of that crap out plays hell on your cats. Catalytic converters are expensive. Especially on a Cadillac. Sure, you can get universal hi-flow cats for cheaper than OEM. But I have heard of the hi-flows pissing off your O2 sensors and throwing codes. If it throws a code, it no longer passes DEQ.

    Adding it to the oil, before an oil change sounds like a better idea. That way the crap is drained out the system, not burned out.

    A clean engine should not use as much oil. Cleaning the engine will hopefully allow the piston rings to seal better. Thusly, less oil will seep past the rings into the combustion chambers.

    A catch can will certainly help less oil make it to your combustion chambers from the intake side.

    The only thing that has a chance at fixing it is the PCV mod, which addresses an actual mechanical problem. The PCV metering tube is sub-par, and allows excessive pressure to build up in the crankcase. This excessive pressure is what makes oil get pulled through the PCV system. This piece of crap metering tube also cannot deal with the amount of oil that gets pulled through (due to the pressure the piece of crap metering tube causes). Drilling it out eliminates at least some of the excess pressure, and allows the oil to at least pass through the PCV system correctly. Correctly being, the oil goes to the combustion chambers. The catch can prevents the oil from being burnt, but still allows for a closed loop PCV system as per modern emissions standards.
    Well said.

  11. #10
    Samorkand is offline Cadillac Owners Member
    Automobile(s): 2005 CTS
    Join Date
    Feb 2013
    Age
    41
    Posts
    8

    Re: Oil usage

    Haven't had a chance to get to the PCV Mod yet but hope to soon. My son borrowed my car a couple weeks ago for a trip. I told him he needed to get the oil changed first. Almost shit when the bill was $90. aside from that something interesting turned up after. After driving the car close to 2500 miles or so the oil level hasn't changed. Before the oil change I used 3 quarts on a 1700 mile trip. Hasn't used any since the change. Any ideas why?

  12. #11
    poncho89 is offline Cadillac Owners Member
    Automobile(s): 2005 CTS- V
    Join Date
    Jul 2012
    Location
    Norfolk, VA
    Posts
    31

    Re: Oil usage

    I know on my car, I do not burn any oil at all until the oil gets down to the last 40% of its life and then it starts to consume about a 1/4 quart every 500 miles or so. I think its normal for oil to start to burn as it gets "worn out" Perhaps your oil was getting to the end of it life as well. I was told by my dealership to change the oil around 30%, perhaps this is why.

    Others mileage may vary, no pun intended.

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.
If you do not want to register, fill this field only and the name will be used as user name for your post.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself.

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Bookmarks

Cadillac Posting Rules

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts
Read about Lincoln | Buick | Kia Forte Forum
Need products for your Cadillac? Check out your options at the links below:

custom floor mats | Cadillac Chrome and Black Chrome Wheels | window tinting