Today our 2008 Cadillac CTS drank the majority of that quart of Mobil 1 5W-30. The installation of the fluid took just a few minutes and we poured it ourselves. That is all for now.
Scott Oldham, Inside Line Editor in Chief @ 23,411 miles
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firstwagon says:
04:53 PM, 01/16/09
Adding oil by yourself is news?
Californians I guess.
carfreak8394 says:
06:13 PM, 01/16/09
Clean the engine bay :P.
billt9 says:
07:52 PM, 01/16/09
The engine consumes a significant amount of oil between service intervals?
Guess that's high performance.
If the RX-8 requires it, I suppose it's ok for a CTS to require it.
cah11705 says:
02:37 PM, 01/17/09
@billt9
the rx-8 burns oil because it is a rotary engine and rotary engines are known to have to have that issue
billt9 says:
02:48 PM, 01/17/09
Well the CTS has a GM engine and it surely has the same excuse to have this issue.
ahightower says:
04:01 PM, 01/17/09
I'm curious as to how you only added a majority of a quart by tipping it upside down and leaving it there? How much stayed in the bottle? ;)
As for the RX-8, per the infallible ;) wikipedia, rotary engines "burn a small quantity of oil by design; it is metered into the combustion chamber in order to preserve the apex seals."
Adding oil to a rotary engine is not an issue, it's simple, routine, maintenance.
MS3lvr92 says:
12:47 PM, 01/18/09
That's one thirsty car.
opfreakx says:
02:28 PM, 01/18/09
amazing the amount of domestic car bashing.
its a direct injection engine. go ask the VW guys, or even BMW, err wait mazda, what their DI engines do to oil.
Burn it, dilute it, and it eat for lunch.
roadburner says:
03:31 PM, 01/18/09
My MS3 may be a steaming pile, but the DI turbo engine uses no oil between 5K mile changes- and the UOA reports show no significant fuel percentage in the oil.
firstwagon says:
04:21 PM, 01/18/09
It doesn't really matter if a car burns a quart evey 1000 miles or every 10,000 miles. All that really matters is changes in consumption. If it's consistent, nothing is wrong.
It really is better if you burns some oil as that means it's getting up to the rings to lubricate them.
bimmerjay says:
05:10 PM, 01/18/09
My DI BMW engine uses no more oil than my non-DI BMW engines did. My first change on my 335i was at about 8,000 miles and it was maybe a half quart below the initial fill.
blueguydotcom says:
10:29 PM, 01/18/09
All my BMWs consumed a quart or two of oil every 4-5 months. What's the big deal?
FWIw, drove an 09 CTS today. Nice car. Smooth. comfy. Good power. Nice interior. Little heavy and too much body roll for me but I can see why people like it.