: GM Oil Change?



bluhaven
06-25-13, 01:54 PM
I just called to see about getting my oil changed at the dealer I bought from, car has 5200mi and the dic shows 26%. They told me GM doesn't pay for the oil change unless your at 20% or less, is this what everyone else is finding from there dealer?

Kevin

romanats
06-25-13, 02:11 PM
they told me the same thing bring it in when you have 20%

bungee91
06-25-13, 02:13 PM
My first oil change they did it earlier, without much fuss (I asked if they would) . However after that they stated under 20%.

jeffroeson
06-25-13, 02:27 PM
My first change was done at 50% to accommodate CUE update and couple other minor warranty items. I was not told or asked that it had to be at 20%. A couple hundred more miles and you should be there. I'm not concerned if it took 6000 miles to get at 20% for my driving style. I always check oil every two weeks.

sqkid89
06-25-13, 02:54 PM
I had mine done at the same time as my CUE update as well. I think I was right around the 20% mark, but they didn't mention anything since it saved them having to schedule another service visit

westcoastats
06-26-13, 12:10 AM
Same for me 20 percent or less

gfxbt
06-26-13, 01:37 AM
Interesting. I did it myself at 5000 miles. DIC said 36%. I asked the dealer about it when I had them relearn my tire pressure monitors. They said that 7000-8000 miles without an oil change was normal. Too long for me. What interested me was that he said to check the oil regularly to make sure there was "enough." Can't imagine an engine in this era (other than a rotary) would burn oil. Free oil changes is nice, but I'm not waiting 7000 miles.

Vernon Cooke
06-26-13, 10:14 AM
I paid the dealer for the oil change at 1K miles during the CUE update.

Good use of the $50 gift card.

M5eater
06-26-13, 12:00 PM
Interesting. I did it myself at 5000 miles. DIC said 36%. I asked the dealer about it when I had them relearn my tire pressure monitors. They said that 7000-8000 miles without an oil change was normal. Too long for me. What interested me was that he said to check the oil regularly to make sure there was "enough." Can't imagine an engine in this era (other than a rotary) would burn oil. Free oil changes is nice, but I'm not waiting 7000 miles.

the GM OLM is backed by dozens of UOA's saying it's pretty spot on in reporting on oil life remaning sans some problems where adjustments have been made to account for timing chain wear in some engines, which arguably is a defect of the chain design.

I typically run into a year before I get down to 20%, but I wouldn't have any qualms about running GM's Dexos 1 product down so low. GL5 oils are highly advanced these days, and the stuff GM pours into your cadillac, while not as great as an OTS synthetic, isn't the cheapest bargin conventional either.

Personally, I'll have them change the oil early, and then run on the OLM or yearly changes with an OTS synthetic.


Can't imagine an engine in this era (other than a rotary) would burn oil.
It is very common for a new engine to burn a little oil. Besides this, everyone from the LFX to EA888, to the subaru boxer engines will tell you that they can burn a moderate to signifcant amount of oil. Piston ring technology hasn't fundamentally changed for the last few decades. Tolerances have, but so has compression and effeciency, and other factors. Most engine's don't burn oil, some do, most of which I find are the higher performing ones (Imagine having a S85 V10 in a 100K M5 burn oil, for example) . Those are the facts.

Thunder Gray STS
06-26-13, 12:59 PM
I ran a 94 Dodge Ram V10 10,000 miles between changes with no trouble. I sold the truck to a customer with 224,000 miles on it. He still has it and it has 355,000 miles on it now. It's his daily driver. Same engine, transmission ( which I never changed the fluid in). No issues at all. That broke me of the 3000-5000 mile oil change mentality.

RippyPartsDept
06-26-13, 01:50 PM
in the fine print of the Cadillac Shield (or whatever it's called that gives you the free maintenance during the b2b warranty) it says 20% as the threshold

dealers can lie to GM and do them early if they want but if they do it too much GM will catch on ... 20% or less is "by the book" when you're allowed to get your free oil change (and any other maintenance that goes along with it)

as for the OLM system it has been proven and tested again and again to be very accurate (and even has a 100% safety factor built in)

for more reading on the subject of oil, oil changes and the GM Oil Life Monitor system see this post of mine
http://www.cadillacforums.com/forums/cadillac-escalade-ext-esv-forum-2007/261067-oil-change-when-every-xxx-miles.html#post2981792
lots of good stuff there ... some links to good oil/change discussions and the best description of the OLM and how it functions and why it's accurate

Siren05
06-27-13, 10:25 AM
Some boxers burn oil other get blow by issues some EJ257s have no issues. Oil catch can solves problem.

I only run Motul full synthetic in all my FI engines. My subie and my ATS DO NOT burn a drop on Motul.

KXAM
06-28-13, 08:32 PM
You guys all have your heads screwed on properly with reference to oil changes. The guys on the Corvette C6 forum are for the most part old school or just old! Many say no way will they ever go over 5,000 between oil changes. Some still go by 3,000 mile intervals. And then, most will flush out perfectly good Mobil 1 or another top of the line synthetic way before it's useful life is anywhere near over.! I say that is just a plain waste of $$ and resources. These of course are some of the same guys that treat a motor as if it is a fragile object and not a machine that can take a ton of use and beating when properly maintained using the mfg guidlines...

Siren05
06-29-13, 08:25 AM
You guys all have your heads screwed on properly with reference to oil changes. The guys on the Corvette C6 forum are for the most part old school or just old! Many say no way will they ever go over 5,000 between oil changes. Some still go by 3,000 mile intervals. And then, most will flush out perfectly good Mobil 1 or another top of the line synthetic way before it's useful life is anywhere near over.! I say that is just a plain waste of $$ and resources. These of course are some of the same guys that treat a motor as if it is a fragile object and not a machine that can take a ton of use and beating when properly maintained using the mfg guidlines...

Boosted engines run hot with a lot of internal pressure. NA ENGINES generally are not as hard on oil.but
Oil is lifeblood to our cars. I change mine every 5000kms or after each track day.

thebigjimsho
07-02-13, 12:40 PM
Interesting. I did it myself at 5000 miles. DIC said 36%. I asked the dealer about it when I had them relearn my tire pressure monitors. They said that 7000-8000 miles without an oil change was normal. Too long for me. What interested me was that he said to check the oil regularly to make sure there was "enough." Can't imagine an engine in this era (other than a rotary) would burn oil. Free oil changes is nice, but I'm not waiting 7000 miles.

"Can't imagine an engine in this era would burn oil."

You used "in this era" to discredit burning oil but not for oil breakdown? Very stubborn thinking there...

flycaster
07-03-13, 12:23 PM
Although I only drive my cars about 5K miles/year (retired, ya know), I have been changing oil/filter on my BMWs only every 12 months for the last 8-11 years, using Mobil 1 synthetic oil. BMW recommends yearly or 15K miles, which ever comes first. The 2002 325 had 68K miles when traded in for the ATS and my 2005 Z4 has 34K miles. Both cars' engines run as smooth as silk. Thus, I have no problem waiting until the ATS's oil alert reaches 20% before changing oil. I'm just interested in seeing at how many miles that 20% will be reached.

MASCAD
07-03-13, 01:02 PM
Although I only drive my cars about 5K miles/year (retired, ya know), I have been changing oil/filter on my BMWs only every 12 months for the last 8-11 years, using Mobil 1 synthetic oil. BMW recommends yearly or 15K miles, which ever comes first. The 2002 325 had 68K miles when traded in for the ATS and my 2005 Z4 has 34K miles. Both cars' engines run as smooth as silk. Thus, I have no problem waiting until the ATS's oil alert reaches 20% before changing oil. I'm just interested in seeing at how many miles that 20% will be reached.

If the 20% level isn't reached before a year is up and you have On Star, you will probably start to get messages reminding you to change the oil. This happens on my CTS and I'm thinking it will probably happen on the ATS also since both call for a yearly filter/oil change regardless of mileage/oil life indication`.

flycaster
07-03-13, 02:27 PM
Yeah, left that out of my post. Should have said 20% or 1 year, which ever comes first.

Russianhaxor
07-11-13, 03:39 AM
I'm curious, what do these cars actually run? Is it synthetic? is it a blend? conventional?

I think it would be stupid for them to run conventional in such a high performance car. FFS I ran synthetic in my Volvo S40 and it purred because of it. The car ran noticeably differently when no conventional.

I would just hate to not get the most out of my car if I'm not running synthetic. Granted, this is a lease and I don't care that much about the longevity of the engine, I just care about how it'll drive when I have it.

MoistCabbage
07-11-13, 04:09 AM
The main advantage of synthetic oil is it's ability to withstand higher temperatures. This is why high performance/supercharged/turbocharged engines REQUIRE synthetic oil.

Using synthetic in an engine that does not require it, will make ABSOLUTELY NO DIFFERENCE in how it runs or drives, or how much power it makes. If you feel a difference, it's the placebo effect.

On the other hand, using dino oil in an engine that requires synthetic, will also have no effect on how it runs, drives, or power output.....right up until the oil turns to sludge, and something seizes.

RippyPartsDept
07-11-13, 11:14 AM
ATS 2.0T and 3.6L are spec'd for Desox1 5w30
the 2.5L engine is spec'd for Deoxs1 5w20

Hoosier Daddy
07-11-13, 02:25 PM
I'm curious, what do these cars actually run? Is it synthetic? is it a blend? conventional?

I think it would be stupid for them to run conventional in such a high performance car. FFS I ran synthetic in my Volvo S40 and it purred because of it. The car ran noticeably differently when no conventional.
It's not black and white any more. They can do so much now starting with dino oil (yeah, I know its not from dinosaurs) that that distinction by itself is almost meaningless. Most Mobile One is now made from dino oil. But it is refined and altered so extensively, it truly is synthetic and the government allows them (and others) to use the designation. About the only significant differences under the operating conditions of a road car is longevity and GM factors that into the algorithms used to tell you when to change the oil. If you don't SERIOUSLY track the car, it doesn't matter and if you do, you will be changing at the end of each event anyway before you go back to commuting in it.

bluhaven
07-13-13, 12:20 PM
Mine just hit 20% at 5500 miles, so its time for the oil change.

Kevin