time for my 2500mile oil change

[Mike R]

and now for my theory, feel free to express your opinions on it just don't (flame2)

A good way to find out the credibility of this is look at race cars, how often do they change their oil? Most likely they change it frequently, the run high rpms for an extened period of time.

well, there ya go, opinons?

So you run your car at redline for 500 miles at a time? One nascar race puts the equivalent of like 20-40K miles on the car. Do they pit and change the oil? NO.

Actually the "severe conditions" say 3K. The "normal" is 5K (IIRC, might be 7K) And that's with conventional oil.

iam7head. The additives get used up. And the oil becomes acidic. Right?

I am running synthetic, and run the crap out of my car. I put 150 miles a day on it. I change it at 5K intervals, which is about every 5 weeks. The oil still looks pretty decent when I drain it.

 

[Jimvh3]

To each there own.....

It's not like you can hurt the car by changing the oil to much.

 

[alexlitov]

do you know that the newer bimmer have a sealed tranny? the atf should outlast the life of the car, i dont know how well that concept works but it's totally new things to me.

actually even E39 had a sealed tranny...

 

[elfhearse]

I'm waiting until I get about 2K on the engine before I change to Mobil 1 5W/30. Usually go 5K between changes... 7K maximum.

(BMW gearbox has MTF "lifetime fluid" in it but alot of people change it out anyway. Not sure about a "sealed" as in inaccessable tranny. My ref. is my E36/8 M Coupe)

 

[Protege52003]

I use to change my oil every 5k with petro, now I do it every 7.5-10K with synthetic. I am using mobile 1 now and they say you can go 20k with a filter change at 10k, but that is way to many miles on the oil. I am sure 7.5-10K is fine.

-R

 

[Eric-BlackMSP]

I seriously doubt driving a p5 "hard" has any really effect on the oil. As stated not even nascar stock cars change oil on the laps, and they either use mobil 1 or castrol or someother brand that you can buy yourself.

Sorry but that theory is nothing more then a misconception, and reminds me of my immature high school days thinking that a K&N drop in had any serious hp gains.

However, changing oil so much only wastes one thing, time. And if you have a lot of that then go ahead and change away .

I think you need to rethink what your car is, it is a 4 cyclinder econo wagon(mine is an econocar! ).

It may be "fast" or have turbo or whatever, but none of us run the car hard enough to change the oil that fast. And none of us have engines that would demand that .

Well maybe that guy with the 270whp p5? He still around?

Well do what you want, but I would put more effort in tuning and reading the FI section then spending time under my car draining oil when it is not needed.

-Eric

PS I love the P5, I wish they made a wagon MSP, I'd buy it!

 

[iam7head]

DING DING DING

mike R got it

the Ph level change

like i said before, i change my syn oil every 3k, that's according to my ase manual in my training

I am pretty comfortable with it, i probably throwing good oil away but this is the only way i can know for sure my new car would be well oiled 100 percent of the time.

syn. oil not nesscary allow you to run longer before oil change.
some of you guy need to rethink what is syn. oil in the market in the first place.

neither way, have a nice day everyone

 

[grindMARC]

seein if i can fit 4 qrts instead of 3.7, just don't like wasting .3 quarts, and about the frequency, i get the oil free and im just anal about it, i have a theory on changing oil, i don't have time now, but i could go into detail later

:wtf: How is it that you're wasting .3 quarts? You can't put the cap on it and use it to top off or during the next change?

You're frequency of changing the oil is just plain silly. I could see doing a change after the first 1k (i always do that), but you're on your third change at 2,500? You must have alot of time on your hands.

Synth oil can go 7k EASY without any measurable drop in the oil's integrity. I've never seen oil analysis results on a p5, but there are several fellas over at NASIOC that have had synth tested at various mileages. I know NASIOC is a dirty word around here, so check this out: http://neptune.spacebears.com/cars/stories/oil-life.html

Do me a favor. Next oil change, put the oil back in the bottles and ship it to me. I'll pay for the shipping.

For anyone lurking on this thread -- don't let this guy's admitted anal oil change frequency affect your oil change schedule.

 

[madduck999]

I am also in the school of thinking that 3k oil change is to often, Mazda recommends 7.5k. I want to swith to royal purple and go 15k on the oil and change the filter every 7.5k. My girlfriends 1990 OLds with 100k has been done that way since day one with no problems