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Old 06-02-2014, 03:21 PM
 
Location: Keosauqua, Iowa
8,880 posts, read 15,624,346 times
Reputation: 11449

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I go 6K on cheap store-brand dino oil. Service interval per the owner's manual is 7500, but I'm usually down a quart at about 6000 so I just change it rather than topping it off only to change it a month later.

The interval for a filter change is 15K per the manual, but having sold parts I don't buy that any filter on the market is good for that many miles.
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Old 06-02-2014, 03:36 PM
 
Location: Prosper
6,268 posts, read 12,101,075 times
Reputation: 9325
Quote:
Originally Posted by sirtiger View Post
didn't bmw recommend 15k miles of oil change? Then they said 10k miles after 2014 models. The same with Benz and many other cars that uses synthetic
Not sure about BMW, I haven't owned one for years, but for Porsche and Mercedes, yes. For a while they were recommending 15k intervals. I'm not sure if Mercedes still is, but Porsche reduced theirs to 10k. My Cayenne manual suggest every 15k, but in a service bulletin a few years later, it was revised to 10k. I was already changing it at 10k anyway, just made it easier to keep track of when to change.
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Old 06-02-2014, 03:39 PM
 
35 posts, read 36,163 times
Reputation: 95
If you drive under "severe" conditions, be more cautious. Stop-and-go, extreme temperatures, dusty conditions, and so on, but go by your owner's manual, if only to comply with the warranty. If you drive mostly on the highway, stretch it out to the longer intervals in your manual, if they give alternative intervals.
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Old 06-02-2014, 03:40 PM
 
Location: Plandome, NY
7,048 posts, read 7,615,394 times
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^^all the german cars I know off hand are either 10k or 15k.

I wonder if all that oil in the car pushes the changed longer....for example, my bmw uses 7.5 quarts of oil which is far more than the typical 4 quarts.
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Old 06-02-2014, 03:43 PM
 
Location: Prosper
6,268 posts, read 12,101,075 times
Reputation: 9325
Quote:
Originally Posted by sirtiger View Post
^^all the german cars I know off hand are either 10k or 15k.

I wonder if all that oil in the car pushes the changed longer....for example, my bmw uses 7.5 quarts of oil which is far more than the typical 4 quarts.
That's definitely a factor. My 911 and the Cayenne take over 9 qts each. Twice the volume of oil, and it should last at least twice as long.
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Old 06-02-2014, 05:43 PM
 
861 posts, read 944,229 times
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I've gone 20k on Mobil 1 before and never had any issues.

I probably won't take such a big risk with my current car since it's new. I will change it every 10k miles.
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Old 06-02-2014, 05:45 PM
 
Location: Vallejo
13,437 posts, read 15,036,253 times
Reputation: 11924
Quote:
Originally Posted by skel1977 View Post
Im talking specifically about using synthetic oil. Just a curious question. I know the regular oil they tell you to change it at 3k miles but im pretty sure its ok to go to 4 or even 5k miles, yes?

SO im wondering about synthetic oil in my 2012 corolla and how many miles is "safe" to go over without changing it
No, they don't. Almost no one tells you to go 3k anymore. I follow the recommended 7.5k interval. I've gone over rather a lot once or twice. I sent in my oil once years ago out of curiosity after going nearly 10k and analysis came back fine.
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Old 06-02-2014, 06:21 PM
 
Location: Arizona
5,577 posts, read 4,780,727 times
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I change it once a year when OnStar tells me. I only drive about 3000 a year. I haven't gone over since I was a teenager, 40+ years ago.
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Old 06-02-2014, 07:14 PM
 
Location: Funkotron, MA
1,204 posts, read 2,903,109 times
Reputation: 1793
The surprising truth about motor oils

C/N: In NYC taxis, there was no discernible difference between engines that had 3k mile oil changes and engines that had 6k mile oil changes. There were also no differences between brands.

Change the oil at the manufacturer's suggested interval and call it a day. Anyone changing oil every 3k miles is wasting their time and money, unless they own an exotic car.
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Old 06-02-2014, 07:26 PM
 
Location: Phoenix, AZ
1,070 posts, read 2,233,643 times
Reputation: 1417
I've done 12,000 miles between changes once. Didn't have any issues. That said, I usually aim for 5,000-7,500. But I also don't use cheap oil / filters.
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