: Looking to purchase a 05-08 sts, motor questions?



bailman
04-04-13, 07:01 PM
I have my eye on a few cars right now, I'm having a hard time deciding between the v6 and v8? Is one more trouble free/reliable than the other? Thanks

Cadzilla8
04-04-13, 07:31 PM
I have the northstar v8 and boy is it fun. If you like your car to have pep then the v8 is the way to go. You will not regret it.

1BadCadSTS
04-04-13, 07:31 PM
Non di v6 is far more problematic than the N*

scott9001
04-04-13, 09:03 PM
v8 you will be glad you did the fuel mileage is not a big change between the two

nwjones18
04-04-13, 10:01 PM
v8 you will be glad you did the fuel mileage is not a big change between the two

Couldn't have said it better. I got the V8 and love it.

EChas3
04-04-13, 11:11 PM
We love our V8's.

Ludacrisvp
04-05-13, 01:19 AM
V8 all the way.

orange57
04-05-13, 02:02 AM
Northstar or nothing. Something about a V8 that I just love. As others said, MPG's won't be a big difference between the two.

chazglenn3
04-05-13, 07:04 PM
Another vote for the NorthStar here. GM finally got it right in 2005.

dkozloski
04-05-13, 11:08 PM
If you get a V-6 your next post will be asking where to get power mods.

EChas3
04-06-13, 02:05 PM
^^^ Dittos!

orange57
04-06-13, 02:17 PM
If you get a V-6 your next post will be asking where to get power mods.

Although in all fairness, that same question is ask by those with the Northstar too :)

chachd
04-07-13, 11:50 AM
I've got an 06 STS with the v6 with 75,000 miles and am doing an oil useage test through my dealer to see if GM will relace/rebuild the engine. I'm using 1 quart every 700 miles!! I buy Mobil1 by the gallon to keep my STS and my wife's SRX filled. Hers has the same problem but we haven't done the test yet. I'd agree with the posts on the v8, although I've never driven one. I get 20-21 mpg most of the time and have never gotten above 22.

Cadillac Cust Svc
04-07-13, 05:35 PM
I've got an 06 STS with the v6 with 75,000 miles and am doing an oil useage test through my dealer to see if GM will relace/rebuild the engine. I'm using 1 quart every 700 miles!! I buy Mobil1 by the gallon to keep my STS and my wife's SRX filled. Hers has the same problem but we haven't done the test yet. I'd agree with the posts on the v8, although I've never driven one. I get 20-21 mpg most of the time and have never gotten above 22.

Hello chachd,

I see you have an ongoing issue with your oil usage. If this is something you would like me to assist you with, please private message me with your name, address, phone number, and VIN#. I am more than happy to be of assistance and stay involved through your process of fixing this issue. Have a wonderful night!

Sincerely,

Laura M.
Cadillac Customer Service

dannyquest
04-07-13, 06:07 PM
chachd, My 06 STS V-6 also was using 1qt. of oil every 760 miles. Cadillac while under warrenty replaced piston rings. Now 40k miles later uses zero oil between changes, ( 10k miles). Danny

silverfox05
04-09-13, 09:35 PM
05 N*, just flipped 100k. bought it 3yrs ago, with 39k miles. just came back from our third trip to florida with it. 25mpg average, doing 70-80mph. did get 27-28 at one point, at 60-65mph. i'd get the 8!

oldcaddybuyer
04-12-13, 01:54 PM
Get the N*

curtc
04-12-13, 02:19 PM
Yet another vote for the N*.

I owned a 04 CTS 3.6L for a year, it had some good power but wasn't enough.

Also test drove a 2005 STS with that same 3.6L and it felt under powered to me as well so when I bought my 06 I wasn't settling for anything but the V8....Love it!

My N* doesn't use a drop of oil and hasn't had any major issues since I got her with 71k on the clock. All I've replaced under the hood is the waterpump (extended warranty), starter (extended warranty), and a motor mount (out of pocket).

caddyman72
04-16-13, 12:45 PM
Hello, I have a 2005 STS, I love my car but I had to find out the hard way that at least the v6 (great engine ) has a bad problem of the camshaft gets loose and eventually destroys the engine. I had to put in a complete engine. I was told by the dealership that did the work about the engine problem. other than that It's a great car.

carter527
04-16-13, 02:57 PM
Hello, I have a 2005 STS, I love my car but I had to find out the hard way that at least the v6 (great engine ) has a bad problem of the camshaft gets loose and eventually destroys the engine. I had to put in a complete engine. I was told by the dealership that did the work about the engine problem. other than that It's a great car.

Sounds like you got a factory dud, you say the same thing in every post you make. I have 137 on the clock and I bought it at 17 on the clock, never replaced any engine internals!