How Often Oil Change for AX Cars ?

Mako Koiwai · Post by **Mako Koiwai** » Wed Nov 25, 2009 9:01 am

The Z06 oil readout is saying 40%. Oil still looks nice and clear. How often should we change our oil on a pretty much AX only car?

Any special oil filter?

Aaron Goldsmith · Post by **Aaron Goldsmith** » Wed Nov 25, 2009 9:05 am

Mako Koiwai wrote:The Z06 oil readout is saying 40%. Oil still looks nice and clear. How often should we change our oil on a pretty much AX only car?

Any special oil filter?

As often as the oil analysis place tells you you need to.. or once or twice a season.

George Lynch · Post by **George Lynch** » Wed Nov 25, 2009 9:42 am

Our C5 is strickly an autocross car. I change oil when the computer tells me to which is usually around 7000 miles and I've used only the GM oil filter.
George Lynch

Post by **Marshall Grice** » Wed Nov 25, 2009 10:20 am

oil analysis is the correct answer. we change the oil in the evo about every 3 months but we're a lot harder on oil than most people.

Mako Koiwai · Post by **Mako Koiwai** » Wed Nov 25, 2009 10:38 am

I can't wait to be hard on our car's oil.

(I guess you mean because it's a turbo?)

I've used oil analysis a couple of times with the old WRX. It always showed things to be OK. I was disappointed that it didn't come with say "recommendations," for those of use that weren't Chemical Engineers.

Can you recommend an oil analyzing biz that offers interpretations of the results?

Dan Shaw · Post by **Dan Shaw** » Wed Nov 25, 2009 1:30 pm

I'll say this, my dad had a 93 Vette, not once in it's life was the oil severely discolored or otherwise tarnished from use. Dad used to do every 3k, if you autoX I might do it once every 3 months /<3k. Miata gets that kind of treatment.

Bob Pl · Post by **Bob Pl** » Wed Nov 25, 2009 6:19 pm

I go to about 30 to 25 % life & on mine it works out to 4500 to 6k miles.

It's darker but not black when I dump it down the storm drain, just kidding!!!!!

p46 stock filter is good, small but good flow & has as much sq inch of filtration as older bigger ones.

http://www.bobistheoilguy.com" onclick="window.open(this.href);return false;

More than you want to know re oil

Steve Towers · Post by **Steve Towers** » Wed Nov 25, 2009 6:31 pm

FWIW - several years ago Consumer Reports tackled this subject and used New York City taxi cabs for test beds. The thinking was that no street driven car would see more abuse than those cabs. They did engine tear downs at varying intervals to check the obvious wear areas and so on. The conclusion was that for any car not being driven in extreme conditions (continous dust, pulling heavy loads, etc.) that 7500 miles between oil changes was sufficient. My recollection is they also said once year if you don't reach the mileage.

Kurt Rahn · Post by **Kurt Rahn** » Wed Nov 25, 2009 8:36 pm

I just picked up the Mini yesterday, and they said the first oil change was at 1 year regardless of mileage (!?!). Maybe because they offer free maintenance for 3 yrs? Does that seem extreme to anyone else?

Jonathan Lugod · Post by **Jonathan Lugod** » Wed Nov 25, 2009 9:02 pm

Kurt Rahn wrote:I just picked up the Mini yesterday, and they said the first oil change was at 1 year regardless of mileage (!?!). Maybe because they offer free maintenance for 3 yrs? Does that seem extreme to anyone else?

I think i would go with the typical change at 1500 with normal miles throughout the rev range.

Eric Clements · Post by **Eric Clements** » Sun Nov 29, 2009 7:24 pm

Mako Koiwai wrote: Can you recommend an oil analyzing biz that offers interpretations of the results?

Blackstone tells you about anything abnormal, how many more miles to go before re-sampling.

Mike Simanyi · Post by **Mike Simanyi** » Mon Nov 30, 2009 11:21 am

http://www.blackstone-labs.com/" onclick="window.open(this.href);return false;

I highly recommend them.

Mike

Curt Luther · Post by **Curt Luther** » Mon Nov 30, 2009 11:32 am

Mike Simanyi wrote:http://www.blackstone-labs.com/

I highly recommend them.

Mike

Like we're gonna listen to a guy who changes his oil on course...

Post by **Bill Schenker** » Mon Nov 30, 2009 11:35 am

Curt Luther wrote:
Mike Simanyi wrote:http://www.blackstone-labs.com/

I highly recommend them.

Mike
Like we're gonna listen to a guy who changes his oil on course...

ROTFLMAO!

Will Kalman · Post by **Will Kalman** » Mon Nov 30, 2009 11:46 am

Mike Simanyi wrote:http://www.blackstone-labs.com/

I highly recommend them.

Mike

Is there a mop in the sample collection kit?

Yeah, Mike, this incident is going to get a lot of play :gpower:

(But we hope the damage isn't as complete as it might be and that you get it back up and running soon).

Mike Simanyi · Post by **Mike Simanyi** » Mon Nov 30, 2009 11:52 am

Will Kalman wrote: Is there a mop in the sample collection kit?

No, but I *highly* recommend if you plan to attempt High Speed Oil Changes, you be prepared for the hard part: adding oil at speed.

We need a rimshot smiley face for you guys...

Post by **Bill Schenker** » Mon Nov 30, 2009 12:00 pm

Mike Simanyi wrote:
Will Kalman wrote: Is there a mop in the sample collection kit?
No, but I *highly* recommend if you plan to attempt High Speed Oil Changes, you be prepared for the hard part: adding oil at speed.

We need a rimshot smiley face for you guys...

Just remember Patch: if it gets really bad, you can just sick Duke on us.

Mike Simanyi · Post by **Mike Simanyi** » Mon Nov 30, 2009 4:37 pm

Bill Schenker wrote:Just remember Patch: if it gets really bad, you can just sick Duke on us.

Duke's a lover, not a fighter.

Then again, a 150+ lb dog lovin' you might be just as bad... ;)

Pete Loney · Post by **Pete Loney** » Mon Nov 30, 2009 4:50 pm

Will Kalman wrote:
Mike Simanyi wrote:http://www.blackstone-labs.com/

I highly recommend them.

Mike
Is there a mop in the sample collection kit?

Yeah, Mike, this incident is going to get a lot of play :gpower:

(But we hope the damage isn't as complete as it might be and that you get it back up and running soon).

Darn, I missed some after lunch "Hold the start" action..... I see now.....Marshall can blame Mike for missing his X runs

Rick Brown · Post by **Rick Brown** » Mon Nov 30, 2009 4:54 pm

Mike Simanyi wrote:
Will Kalman wrote: Is there a mop in the sample collection kit?
No, but I *highly* recommend if you plan to attempt High Speed Oil Changes, you be prepared for the hard part: adding oil at speed.

We need a rimshot smiley face for you guys...

Anthony Munoz · Post by **Anthony Munoz** » Tue Dec 01, 2009 1:46 pm

About once a year (about ~2-2,500 miles. The odometer on My Lotus just went over 8,000 miles over the weekend--using 5W-40 wt synthetic)

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