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Old 10-24-2011, 08:36 AM   #1 (permalink)
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Synthetic?

My car is due for an oil change in about 300 miles. Is it worth going synthetic? Since I get all my services done at the dealership (car is still under warranty), what brand of oil do they use? For the price I pay, I HOPE it would be top of the line.

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Old 10-24-2011, 09:27 AM   #2 (permalink)
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In the 2011 model year, the new specification by GM for engine oils used in GM vehicles is “dexos” and it is compatible with older models should you choose to purchase it. Some of the benefits resulting from the dexos specifications include increased fuel economy, reduces oil consumption, improved sludge protection, and improved engine cleanliness.

Hope this helps,
Sarah
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Old 10-24-2011, 10:26 AM   #3 (permalink)
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Bob Is The Oil Guy - Forums powered by UBB.threads™
PLEASE go there and read and search the Used Oil Analysis section for results with specific oils used in the same engine you have.

Posting here you are going to get a lot of opinions based solely on marketing hype.

Far as "due for a change" is that based on 3000 mile intervals or on the oil life monitor?
3000mile idea is pretty wildly outdated unless the use is severe and dirty, and the oil life monitor does not actually measure the condition of the oil but rather calculates how used up it is based on your use.

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Old 10-24-2011, 03:21 PM   #4 (permalink)
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Oh I see. Well I could be off with the numbers but I don't go by the oil life monitor nor do I get a change after 3000 miles. I usually go when GM tells me to based on the last oil change. And that is simply because my Impala is still under warranty and I extended it and I know for the warranty to be valid, the vehicle has to be maintained and you must have proof by an authorized dealership or service company that service was done. If Im not mistaken?

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Old 10-24-2011, 04:28 PM   #5 (permalink)
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IMO GM would have to honor warranty so long as you consistently brought it in before the oil change light came on, could just set yourself a 10% life remaining goal and go with that, with dino oil even so long as the car did not spec synthetic.

3000mile changes these days are a scam, look at the owner's manual and the oil life indicator for evidence of that.

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Old 05-29-2012, 03:46 PM   #6 (permalink)
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I do my own oil changes and my last oil change I went synthetic. I too have an 08 impala I have the LS base model though. But I went with the bosch oil filter it was a lot more expensive but my oil is still very clean since I changed it I've driven from Charlotte nc to atl ga and back and also from Charlotte nc to Richmond va on top of those road trips I drive about 40 miles a day to and from work and ( I like to just ride sometimes) and my oil is still clean and clear. When it came time to change it I check it and just reset the oil life and it still looks good . I plan on changing it this go round but all in all I feel it's worth it if you do a lot of driving.

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Old 05-30-2012, 06:13 AM   #7 (permalink)
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The oil looks clean because you have a modern MPI engine and are making long trips in a warm climate. Has nothing to do with your filter.

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Old 06-23-2012, 11:04 AM   #8 (permalink)
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I notice this thread is eight months old but I would like to respond to the OP's question of, synthetic oil is it worth it.
I would answer, yes.
I have a 2010 Impala V6 automatic trans. Chevy says it is supposed to get 29 MPG hi-way.
I tell the guy at the oil change place that I want Mobil 1 full synthetic. He charges me 70 dollars for the oil change and filter. I am in my 50's and can afford not to have to crawl under my cars anymore.
I have just returned from vacation to South Dakota and back. (Kansas)
Before leaving SD I checked the oil life remaining and it said 19%. I have never let it get that low before. I considered having the oil changed before driving back to Kansas. I did not.
I drove from Rapid City SD to Grand Island Nebraska. 437 Miles. It took 13.65 gallons to fill the Impala back up. That is 32.01 MPG.
The next day I drove from Grand Island Nebraska to home, 408 Miles. It took 12.67 gallons of gas to refill. Thats 32.20 MPG.
The oil life remaining said 18% left.
There was over 8000 miles on that oil. I had the oil and filter changed the next day.
Not meant for a Mobil plug.

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Old 10-30-2012, 08:53 AM   #9 (permalink)
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I know this is an old topic but didn't want to start a new one being that the question has been asked before. Just doing my part to help the admins conserve space.

But anyway we bought an 08 3.9 LTZ that has 120k miles on it. Before he left for school this morning he told me that when he stopped by his grandparents house his grand dad told him he could smell oil. He parks on a concert driveway everyday and there aren't any signs of leaks. I asked him if he checked it and he said yes and it was about a quart low. It's time for an oil change but I wouldn't think it would use a quart of oil within 3000 miles. I'm going to change it this evening when I get home. I'm trying to decide on whether to change to synthetic. Will it help with the oil consumption? will it help gas mileage etc? How long between oil changes can I go with Synthetic? I was considering going with the Castro full synthetic.

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Old 10-31-2012, 05:55 AM   #10 (permalink)
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Quote:
Originally Posted by DannySW97 View Post
Oh I see. Well I could be off with the numbers but I don't go by the oil life monitor nor do I get a change after 3000 miles. I usually go when GM tells me to based on the last oil change. And that is simply because my Impala is still under warranty and I extended it and I know for the warranty to be valid, the vehicle has to be maintained and you must have proof by an authorized dealership or service company that service was done. If Im not mistaken?
DannySW97,

I have found that when your dealership send you a post card telling you of an inpending service they're usually pretty close. If you have GM's satillite system then they base your service on how many miles you actually have down-loaded from your car.

On a personal basis I've used synthetic since past the first OCI. All I use for my engine is synthetic so I just ask them to put it in when they write your service ticket up. My dealership uses Mobil 1 and the last time I know of they also use Castrol "Syntec". Now I also see they have GM's own brand of synthetic "Dexos" oil but I don't know if that's what they use in my Impala SS.

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Old 11-03-2012, 03:50 PM   #11 (permalink)
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Looks like I'll be going synthetic!

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PIAA headlights and high beams
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5% 3M tint on front and rear
Reverse & license plate LEDs
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Interior LED light swap
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Old 11-03-2012, 06:54 PM   #12 (permalink)
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Just for the record the GM "DEXOS" oil is a semi-synthetic oil and not a full synthetic, and ALL GM vehicles are required to get this oil when the oil is changed from 2011 model year on up and is recommended for all years before. At my dealership they charge the same for the regular "dino" oil change as well as the "DEXOS" oil change if yours is the same, mite as well go for the DEXOS change at the very least.

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Old 11-04-2012, 01:24 PM   #13 (permalink)
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I'll look into that, thank you.

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PIAA headlights and high beams
De-badged logos and emblems
5% 3M tint on front and rear
Reverse & license plate LEDs
Black AVS window deflectors
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Interior LED light swap
Go Rhino push bar

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Old 11-04-2012, 08:41 PM   #14 (permalink)
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Dexos is at the very least semi synthetic, but most are full synthetic, a good oil that meets the spec is Quaker state ultimate durability, it's full synthetic and inexpensive, it's a dream come true for DIYers like myself. $20 and some change at Walmart for 5qts isn't half bad. There is a lot of brands of oil that meet the dexos spec or even surpass it but refuse to pay the fee to sport the logo on their containers.

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Old 11-05-2012, 06:51 AM   #15 (permalink)
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Quote:
Originally Posted by Impala 2010 View Post
I notice this thread is eight months old but I would like to respond to the OP's question of, synthetic oil is it worth it.
I would answer, yes.
I have a 2010 Impala V6 automatic trans. Chevy says it is supposed to get 29 MPG hi-way.
I tell the guy at the oil change place that I want Mobil 1 full synthetic. He charges me 70 dollars for the oil change and filter. I am in my 50's and can afford not to have to crawl under my cars anymore.
I have just returned from vacation to South Dakota and back. (Kansas)
Before leaving SD I checked the oil life remaining and it said 19%. I have never let it get that low before. I considered having the oil changed before driving back to Kansas. I did not.
I drove from Rapid City SD to Grand Island Nebraska. 437 Miles. It took 13.65 gallons to fill the Impala back up. That is 32.01 MPG.
The next day I drove from Grand Island Nebraska to home, 408 Miles. It took 12.67 gallons of gas to refill. Thats 32.20 MPG.
The oil life remaining said 18% left.
There was over 8000 miles on that oil. I had the oil and filter changed the next day.
Not meant for a Mobil plug.

The oil life monitor in no way monitors condition it is strictly calculated based on use and conditions.

You get out on the highway on a good road surface with a well maintained and BROKEN IN car and maybe in some traffic for a draft and hit the sweet spot MPH wise and it would not be unusual to beat EPA MPG. My wife used to do that with her car when it had the original LRR tires and it never got anything but dealer bulk oil.

I really wish people would offer Used Oil Analysis results when discussing oils they like, ALL other data is pointless speculation.
In the LT1s M1 5w-30 is still considered awesome because it was the first engine to come factory filled with M1 from GM. The faithful never cared that UOAs showed consistently elevated iron wear numbers vs other oils.

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