08-13-10, 07:01 PM
Does anybody know what changes were made in the 2004+ years. It seems that after 2003 that there are fewer oil leaks, H/G issues and noise. Were there any real changes or is just my imagenation? I have 172,000 on my 2000 and I would like to start looking for a newer one and my brother-in-law has a 2007 that doesn't leak, burn or use any oil at all. I will not drive anything but a northstar now!
Right here in this forum. Its a sticky. . .
Also look here. http://www.cadillacforums.com/forums/northstar-performance-technical-discussion/133429-root-cause-head-gasket-failure-fix-4.html
I found both these to be a good start and very helpful. They explain a lot I thought.
The head bolt threads went to a coarser pitch in '04.
08-14-10, 09:11 AM
Thanks for all the replies. Even with 172,000+ miles on my 2000, it will still snap your head on WOT. MPG is still 26+ on trips. I think that it will still be good to at least 300,000. It has always dripped oil out of the rear seal since ~60,000 miles. Only have to add a 1/2 quart every 3weeks or so, not miles just monthly. When considering the amount of luggage, people and comfort, rice burners are not in the same thought. I know that my carbon foot print is better than they are. Ever notice how many single drivers there are in the environmentally friendly cars? I will be looking at 2004/2005 devilles rather than 2006+. Seems the newer body style commands around $5000 more and if the engine and trans are the same just makes it look even better. Work on mine myself; very easy. no problems with anything except i can't get the air vents out to glue down the dash--but that's another thread.
I just did that to mine. Look inside the vent. I used two butter knives. Use a small metal paint scraper to make easier. U need two of them. One for top. One for bottom. U can actually see the clips if u look into the vent. Wiggle the knife until it goes under the clip. Easy. Just be patient. They come out easily. Once the knives are in place pull the vent straight forward to remove. There's another sticky or article somewhere in the forum on this
We had a '98 STS; a great car. The 2005 & up are great, too; just a very different from the earlier ones. Better handling (RWD or AWD) performance and features overall. Very few reports of HG issues. However, the older STS is roomier and rides softer. It does have the traction of FWD. Some very nice features were not carried forward to 2005.