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-dens
07-22-2003, 10:19 PM
or its just a waste of time and money?

amann23
07-22-2003, 10:26 PM
admit it's a waste of time and money if you leased the car. You are staying with the warranty if you only do it once very 12K or 12 months, so why not.

I bought and will change every 6K miles or 6 months. Going 12K miles or 12 months on BMW's recommendation is so stupid if you own the car.

RonCT
07-23-2003, 12:05 AM
If BMW says every 15k miles is fine and they warranty the engine for 6 years or 100,000 miles...

jason634
07-23-2003, 12:33 AM
Ask Stonewalk or aka Jorg Muller, they both changed their oil at frequent intervals at their own expense. stone's engine failed and was replaced, Jorg Muller's showed nasty scored bearings during the service action--BMWNA refused to replace engine and he sold his m3 and got a porsche.

so... yes, it's a waste of money and time. If you're worried about preventing engine failure, we have at least 2 documented cases where frequent oil changes DOES NOT prevent oil starvation (defective oil pump does) and hence it doesn't really do anything for you. aka Jorg Muller tracked frequently and figured changing the oil would keep his engine running happy, but it didn't.

On the other hand, if it gives you piece of mind, and helps you sleep better at night, by all means go for it.

mike_m3
07-23-2003, 01:39 AM
<br><br><br><br><center><a href="http://m3.madrussian.net"><img src="http://osbdesign.com/webpics/m3.jpg" border=0></a><br><br><br>

VM3
07-23-2003, 02:28 AM
<br>



"Try not. Do, or do not. There is no 'try.'" Yoda
<IMG SRC=" http://members.roadfly.com/vm3/no.gif"> <IMG SRC=" http://members.roadfly.com/vm3/newsig3.jpg">
'02 M3, 6Spd
Boston, MA

eatapc
07-23-2003, 07:59 AM
The point of the 6000 mile oil change is not to prevent the engine blowing up. The point is to provide optimal lubrication so that the engine runs as well as possible for as long as possible.

There is some controversy over what is optimal. I think AKA Jorg changed his oil more often than necessary, but he changed it very frequently, not merely at 6000 mile intervals. Blaskstone tests have tended to indicate that the oil breaks down prior to BMW\'s freebie oil change at 12k or so. A change at 6 -7k miles is probably best for the engine; doing it before that is a waste of money; doing it at 12k will probably shorten the life of your rings, etc. -- but that\'s a far off problem beyond the 6/100 warranty period.<br><p class=MsoNormal><span style='font-family:Charcoal'>10/01 Jet Black SMG coupe, New Jersey, exit 50B</span></p>

Wood///M3
07-23-2003, 12:27 PM

goatboy
07-23-2003, 12:58 PM
If you lease, who cares? Go with the miniumum.

If you own, and plan to sell early, you'd likely be a better price if you can prove frequent oil changes.

If you keep cars 75k miles, 100k miles, or more, oil is cheaper than motors.

Several people have got a Blackstone Lab's enginer oil analysis. One of the tests they do is TBN (total base number). TBN is a measure of the oil additives remaining in the oil. (They ask what brand of oil you use in the analysis form.) Blackstone says the oil additives start getting dangerously low at about 7500 miles.

My dealership (dealers never lie) says they see sludge in high milage BMW's that go the full recommended distance on oil changes.

Since (recommended interval only) oil changes are free for three or four years, it makes sence to perform additional oil changes evenly spaced between the free ones.

The duration of required oil changes depends on how you drive. Mine ends up being about 12.5k miles. So, I change it every 6.25k miles.
I don't feel it's necessary to go to 4.2k miles, though.

StoneWalk
07-23-2003, 02:30 PM
As we have amply demonstrated, frequent oil changes will not save you from a bad batch of bearings. Those are gonna go no matter what you do (and no matter what BMWNA says about it being the drivers fault).

But long term engine health out past 100k miles may be influenced by oil cleanliness throughout its life. If you don't plan to keep it long term, probably not worth the added expense of frequent changes. If you are keeping it, then the debate is more interesting.
<br>
StoneWalk, Ventura California
<img src="http://members.roadfly.com/stonewalk/M3lagunaSeca2a.jpg">

jeanno
07-23-2003, 04:40 PM
How much is going to cost an oil change anyway ?

CBsaksiri
07-23-2003, 04:42 PM
<br>
<HR width=512><B>CBsaksiri</B> Sunnyvale, CA
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