I bought my very first car, a BMW 6 Convertible. I love it.
Now, I've gotten about 3000 miles on it, and from what I've been
reading, I should change the oil in my car every 3000 miles. The car
manual says nothing about it.
And there's also an Oil sensor with iDrive that tells me if the car
needs new Oil. The oil sensor hasn't gone on.
So... do I change the oil in my car? Or do I wait til the sensor goes
on? It's not like I'm trying to save a few bucks on oil, I just want
to do what's right for my car. Thanks!
Yeah, although just about the only places still touting the 3K mile oil
changes are the likes of Jiffy Lube. One would have to be out of their mind
to buy a $70-80K BMW and then take it to these good-for-nothing grease
monkeys at JL for oil changes. :)
I'm thinking the once-a-year or every 15K mile OCI might be OK if good
quality synthetic oil is used, although a lot depends on one's driving
patterns. I'd probably go ahead and do it every 7.5K like John, but that's
just because I'm an oil freak. I change the oil on my A4 1.8TQ every 5K
miles, but that thing only has a 3.7qt oil sump and I tend to drive it
For an interesting read, see the "Synthetic Oil Life Study":
Granted, it's only one data point, but the highlights from this site
* A simple filter change and associated top-off oil goes a long way
towards extending oil life (it's the top-off oil that helps the most).
* Engine wear appears to decrease with oil age. There's some evidence
that frequent oil changes increases engine wear, although it's unclear
(to me) if the increased wear is actually significant.
Yup, I'm very familiar with this study and I know the guy who performed
it from another message board (BITOG).
Yeah, if you have to add a quart of oil every 1K miles, you could
practically go on without ever having to change your oil. :)
Unfortunately (or maybe fortunately), my 1.8T doesn't consume any
noticeable amount of oil between oil change intervals.
Possibly because at every oil change you make the engine run pretty much
dry with no oil pressure for the first couple of seconds until all the
new oil is properly distributed around the engine. It helps to prefill
the new oil filter with oil. But yeah, whatever the wear that it
causes, it's most likely insignificant in the grand scheme of things.
Though it's a bit of a tease (certainly not "bashing)" I am afraid that a
lot of the posts in this NG and the Chrysler one I follow do suggest there's
a lot of it (3000-mile changes) about.
For direct contact replace nospam with schmetterling
"Malt_Hound" <Malt_Hound@*spam*yahoo.com> wrote in message
First of all, changing oil at 3000 mile intervals is rather outdated. Oil
has been changed dramatically since that old rule of thumb, and it lasts
much longer these days. This is due to in part to the fact that your car
carries 7 quarts of oil, whereas most cars carry only 5 quarts. You get an
extra 40%, and this translates into longer change intervals.
Second, doesn't BMW take care of that for you under the warranty program? I
thought that BMW did all of the routine maintenance under the warranty. The
idea being that BMW wouldn't take on costly maintenance if it didn't have
to, therefore they must know that there isn't any maintenance required.
Basically, they know that the oil lasts a long time and they don't need to
change it, so they offer to change it free every time it is needed.
Third, the car keeps track of your driving habits and what the car is asked
to do, and it uses this information to determine when to change the oil. The
system works pretty well, and it is safe to trust it. Don't worry, be happy.
Yeah, what Jeff said.
Except, if I just dropped the cash for a brand new 6 series, I'd change
the oil once (at my own expense) in between each of the on-board
computer's "recommended" intervals, (and don't reset the counter) which
usually work out to be somewhere around 15k miles.
Since you anticipate the service reminder coming on at 15k (and BMWNA
picking up the tab for that one), you do yours at 7.5k, 22.5k, 37.5k, etc.
Y Oil Changes MV,
Why? Do a search on synthetic oil.
Or - have a sample of your oil analysed at 7500 miles. And again at
15,000, or whatever. If it's showing problems, then you're right.
Otherwise you're simply throwing away money.
*Women like silent men; they think they're listening.
Dave Plowman email@example.com London SW
To have an analysis done would probably cost as much as just doing the
oil change (yourself).
There is some evidence around that suggests shorter intervals for the
first few cycles, I guess until the engine breaks in and then I suppose
the internal parts wear slower and contaminate the oil less.
Perhaps a happy medium might be to just change the filter and top up the
oil at that previously mentioned time frame.
As I said, YMMV,
Yes, that's right. And after replacing the oil filter is a real good
time to check that oil level on the dipstick and top it up. I just
didn't mention the dipstick part because it seemed so obvious.
You only need to do the UOA once, maybe twice (once at 7.5K and then at
15K) to see if changing oil at such an interval is not doing harm to
your engine. Once you establish that, you don't need to do more
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