: Oil burn



Harley04
06-07-12, 10:58 PM
I have a 2005 STS v6 with 66,000 miles, it started using a quart of oil every 2,000 miles. Anyone else have this issue?

KRSTS
06-07-12, 11:24 PM
according to GM that's within normal range for that engine

Harley04
06-07-12, 11:34 PM
That can get expensive, $70 for oil change and $9 a quart to add in between changes!!

curtc
06-08-12, 01:18 AM
I paid $56 for a 6qt. Mobil 1 oil change at my local GM dealer for my 3.6l CTS...OP, how does your intake look? Full of oil? It's the "PCV" orifice on the passenger side valve cover...gets plugged up and then oil gets sucked into the intake...have you looked into an oil catch can? This is why the 3.6l engines like to blow timing chains...GM design flaw.

Harley04
06-08-12, 07:45 AM
Thanks for the info, I'll check that out.

dannyquest
06-08-12, 09:21 AM
Harley04, Here the scoop. My 06 STS V-6 was burning oil at rate of 1qt. @ 760 miles. Lucky it was under warrenty. Cadillac replaced the piston rings. Now 30,000 miles later still burns no oil. You could add 1 qt. of oil every 2,000 miles and never have to change oil again. Danny

EChas3
06-08-12, 09:48 PM
^^^ Not so. Oil breaks down & gets dirty. Do what the OLM says.

curtc
06-08-12, 09:59 PM
I do no more than 5k between changes, no matter what the OLM says.

EChas3
06-08-12, 10:14 PM
That's a waste of oil, but it's your money. Enjoy!

Harley04
06-09-12, 10:41 AM
Any recommendations for a brand of oil catch can?

curtc
06-09-12, 01:36 PM
Was there oil in your intake? The catch can doesn't keep the oil in the crank case, just keeps it from going into the intake. Poke around the 1st gen CTS forum regarding this, TONS of info...