Good test results on OEM oil @4970miles

santov · 01-13-2011, 04:44 PM

My Z4 was a lease return and one of the first things I wanted to do was test change the oil and test the old stuff to investigate the engine for problems.

I got a clean engine and at almost 5k miles the oil still looked good!

Here's a link to my second favorite car website.

http://www.bobistheoilguy.com/forums...6&#Post2137536

Foxland · 01-13-2011, 08:57 PM

That's a very cool site. I've always been skeptical about long oil change intervals, my Porsche was 20k according to the factory, it just doesn't seem right. I used to change my cars every 3000, then I started to do it at 7500, now I just follow the book with my lease cars, the others at 5000.
Mo

scottyD · 01-14-2011, 09:28 AM

I just had a Blackstone done after about 9600 miles on the BMW oil. 60k on the odometer at that point.

Oil and engine looked good. No problems found. Blackstone suggested next time try 12k miles.

I'm starting to think that the 15k mile oil change isn't all that crazy.

My driving is 90% highway though, and very few short trips.

imz4n · 01-14-2011, 11:41 AM

Are these oil tests looking at aluminum levels? Some of the SI owners are reporting higher than average content of aluminum.

scottyD · 01-14-2011, 12:13 PM

Blackstone checks for everything.

Aluminum levels fine for me - 10ppm on the last analysis.

01-13-2011, 04:44 PM	#1
santov Lieutenant 64 Rep 483 Posts Drives: 2007 Z4 3.0si White over Beige Join Date: Dec 2010 Location: Bay Area, Calif iTrader: (8)	Good test results on OEM oil @4970miles My Z4 was a lease return and one of the first things I wanted to do was test change the oil and test the old stuff to investigate the engine for problems. I got a clean engine and at almost 5k miles the oil still looked good! Here's a link to my second favorite car website. http://www.bobistheoilguy.com/forums...6&#Post2137536
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01-13-2011, 08:57 PM	#2
Foxland Private 3 Rep 60 Posts Drives: Merlot Red Z4 3.0 Roadster Join Date: Dec 2010 Location: Boca Raton, FL iTrader: (0)	That's a very cool site. I've always been skeptical about long oil change intervals, my Porsche was 20k according to the factory, it just doesn't seem right. I used to change my cars every 3000, then I started to do it at 7500, now I just follow the book with my lease cars, the others at 5000. Mo
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01-14-2011, 09:28 AM	#3
scottyD Private First Class 2 Rep 136 Posts Drives: 07 3.0si Coupe Join Date: Oct 2007 Location: DC/Baltimore area iTrader: (0)	I just had a Blackstone done after about 9600 miles on the BMW oil. 60k on the odometer at that point. Oil and engine looked good. No problems found. Blackstone suggested next time try 12k miles. I'm starting to think that the 15k mile oil change isn't all that crazy. My driving is 90% highway though, and very few short trips.
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01-14-2011, 11:41 AM	#4
imz4n Captain 57 Rep 822 Posts Drives: 2006 3,0 si TITANIUM SIlVER Join Date: May 2007 Location: Orange County Ca. iTrader: (0)	Are these oil tests looking at aluminum levels? Some of the SI owners are reporting higher than average content of aluminum. __________________ SoCal Z Enthusiast contact me to get on the list. Events for like minded people and when you talk about your Z, we will know what you are saying. https://www.facebook.com/groups/ZSCCACalifornia/
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01-14-2011, 12:13 PM	#5
scottyD Private First Class 2 Rep 136 Posts Drives: 07 3.0si Coupe Join Date: Oct 2007 Location: DC/Baltimore area iTrader: (0)	Blackstone checks for everything. Aluminum levels fine for me - 10ppm on the last analysis.
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