BMW Z3:

Synthetic Oil 1996 BMW Z3

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# 1  11/16/2009 3:48 PM

aterk
New member
Registered: 11/16/2009
Posts: 1

Synthetic Oil 1996 BMW Z3

I have always used synthetic oil in my 1996 Z3.  At my last service, they used regular motor oil.  I am having them change it out w/ the synthetic that I requested.  I drove it three times (10 minutes each) w/ regular oil.  Will this mistake result in engines issues?

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# 2  11/17/2009 12:51 AM

way2old
Senior Member
Registered: 9/17/2009
Posts: 30

Re: Synthetic Oil 1996 BMW Z3

You should not have any problems.  The synthetic oil will stay on the parts longer than conventional and will keep the protection in place.


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People are like slinkys, not much use but I still smile when I see one stumble down the stairs.

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# 3  11/17/2009 1:36 PM

Administrator
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Registered: 9/27/2008
Posts: 1281

Re: Synthetic Oil 1996 BMW Z3

aterk wrote:

I have always used synthetic oil in my 1996 Z3.  At my last service, they used regular motor oil.  I am having them change it out w/ the synthetic that I requested.  I drove it three times (10 minutes each) w/ regular oil.  Will this mistake result in engines issues?

Way-back-when in the early stages of synthetic motor oil there may have been compatibility issues. I've never seen reports which back that up, but it was a common consensus in shops that if you're running an engine on synthetic -- don't switch. And there we're incidents -- without true evidence -- where a few engines met their demise shortly after a switch-back to petroleum based products.

My outlook involved consistency. If the engine was lubricated (broken in) long term under certain lubrication characteristics, and all of a sudden switched to another, it may be like a punch in the face.

Anyway, today's versions of synthetic motor oil are different animals (chemical makeup). Although I still recommend sticking with one or the other, the dangers involved with switching are much less (if any). Nowadays they're selling synthetic/conventional blends, and a common practice is using synthetic in only extreme high or low ambient temperatures.

In other words, don't worry about it -- but don't do it again.


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