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      02-05-2019, 03:54 PM   #1
DaveJB
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'07 Z4 M Coupe - burns NO oil at 117k miles

Hey guys, just wondering how common this is and what good things it might mean for my engine? I've had the car for about 18,000 miles (bought it with about 99k) and it's never burned any oil between changes. I mean as far as I can see, not one drop. I do changes at about 7,500 miles. Have been using Liqui Moly 10w-60

First, this is super awesome and hopefully suggests it was well maintained before I bought it.

What else does this mean? Like, mechanically. I was thinking when I check the valve clearances (I do all work myself) I'd be stupid not to do a compression and leak-down test (but I'd have to buy the gauges) but doesn't this mean those numbers will most likely be in spec?

TIA

Still in love with this car man! I had a weird moment where I almost sold it for a 97 840Ci but came to my senses.

I just love the look of the 840 but kept my Z4 for many reasons... actually, I realized how stupid I'd be after having driven the 840 then on the way home in my Z4 I turned off traction control and hooned it. Yowsa! I fell back in love right there.

Last edited by DaveJB; 02-05-2019 at 05:35 PM..
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      02-05-2019, 05:27 PM   #2
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Such awesome news @ 117K miles!

While the 84l0ci has a one-off look, the performance is WAY off of your beloved Z4MC....and the Z4MC is entirely awesome looking.
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      02-05-2019, 05:51 PM   #3
DaveJB
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Thx. Yeah, it's crazy how reliable it's been. The syncros are in great shape (shifts nicely) the battery is over 3 years old (they last longer in the trunk I guess?) just everything about it is so reliable. What a car!

Lemme throw an updated photo in here too.
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Last edited by DaveJB; 02-06-2019 at 09:58 AM..
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      02-06-2019, 06:17 AM   #4
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Quote:
Originally Posted by DaveJB View Post
Thx. Yeah, this car is almost creepy in how reliable it's been. The syncros are in great shape (shifts nicely) the battery is over 3 years old (they last longer in the trunk I guess?) just everything about it is so reliable. What a car!

Lemme throw an updated photo in here too.
Looks menacing! Specs on suspension and wheel setup?

P.S. I absolutely love the way the 8ers look, and maybe one day I'll add it to the collection. But no way in hell the Z4M is going for that haha
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      02-06-2019, 01:47 PM   #5
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Thanks!

Front Wheel Fitment
2 x APEX ARC-8 18x9.5" ET35 Wheel Hyper Silver $628.00
Rear Wheel Fitment
2 x APEX ARC-8 18x10" ET25 Wheel Hyper Silver $648.00

I believe 275/35 18's in the back and 255/35 18's in the front.

Running Fortune Auto 500 coilovers.
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      03-06-2019, 09:59 PM   #6
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Dave, just curious - where in AZ are you? So few Z4MCs here. I'm down near Bisbee for the last year, after spending 14 years in Chandler.

I'm on Z4MC #2. Right after I bought it in November, I replaced the battery - it was still the original, a decade old, and was still working. I wasn't going to press my luck so I replaced it right away.

I've had great luck with my BMWs in Phoenix with batteries - being trunk-mounted definitely helps in the searing Sonoran desert heat. In my VWs, not nearly as much longevity.
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      03-07-2019, 11:05 AM   #7
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Hey, I'm in north central Phoenix. Yeah, that's so awesome about the batteries. Any pics of your car around?
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      03-07-2019, 09:02 PM   #8
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Quote:
Originally Posted by DaveJB View Post
Hey, I'm in north central Phoenix. Yeah, that's so awesome about the batteries. Any pics of your car around?
Current one, just bought it last November:

https://www.kcphotodump.net/Cars/Z4M-Coupé-2/

My original, bought new at BMW North Scottsdale in 2007, owned till mid- 2015:

https://www.kcphotodump.net/Cars/BMW-Z4-M-Coupe/
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      03-08-2019, 09:10 AM   #9
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Mine's not used any oil between services in the 150,000 miles I've owned it.

Even gave my 1L top-up bottles away.

Which is a bit different to the 1L per 2,500 miles of the e34 M5 I used to have.
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      03-08-2019, 09:33 AM   #10
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Oil consumption

Quote:
Originally Posted by mmm-five View Post
Mine's not used any oil between services in the 150,000 miles I've owned it.

Even gave my 1L top-up bottles away.

Which is a bit different to the 1L per 2,500 miles of the e34 M5 I used to have.
WOWIE!
Such great news - haven't seen a post (yet) identifying excessive (or any) oil consumption between scheduled oil changes. I'm at 66,500 miles and have zero oil consumption between scheduled oil changes as well.
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      03-08-2019, 09:54 AM   #11
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How's the UOA? I'm on my first fill of LM 10W-60, but since my drain intervals are nearly 2 years, I haven't had a chance to run the analysis yet.

In the spirit of this thread, 52,XXX miles, 13 years. Never burns a single drop. I always check the oil level before events and before change, and it's almost always exactly where I left it from the prior fill.

Knock on wood.
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      03-08-2019, 12:16 PM   #12
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Not sure why I changed at about 5k btw. Would probably run at least 7500 typically.

See attached.
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File Type: pdf 07 Z4 M COUPE-170409 UOA.pdf (17.3 KB, 163 views)
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      03-11-2019, 01:18 PM   #13
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Nearly 160k here and doesn't use any oil.
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      03-11-2019, 01:30 PM   #14
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So, guys, I've been working on cars for decades but I don't know enough to infer anything here. Does this mean our cars likely have like-new compression? AKA, haven't lost any power from new, at least from rotating internals (vs sensors degrading)?
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