jonr-

Quick questions!


I read through the DIY (change oil) thread now and decided to change oil.


1. How many litres do I have to fill when I empty the oil and changing the filter on my rx-8 high power ?


2. When should I change? Im a medium + agressive driver. (that means I empty the first gears to 9.200 rpm everytime, but I have full throttle only 1/20 times.) I just like to end the rpm metre for the sound itself.

- In the manual it stands oil change every 20 000km, and for some 10 000km. But with my other cars I'm used to change every 5000km. Any advice here?


im convinced this thread is already been made, but I didnt seem to find it when I searched. So this might not be the most interesting thread, so I'll try to delete it after I got the answer I need

Nubo

About 3.5 to 4 liters for a change, depending on how much old oil you get out, whether you change the filter, etc.. When refilling, start with 3 liters and check the level before proceeding.

Thanks to the oil coolers and plumbing, oil change does not get rid of all old oil -- about 3 liters remain.

Given this "partial" oil change issue, I would say the common interval for enthusiasts is 3000 miles, so 5000 Km is pretty close.

All of this is debatable, and debated. Enjoy the forum.

EdwardsB

^what he said.

off topic now but, what kinda of gas mileage do you get with 9k shifts for the first few gears?

04RX8man

yeah i don't have ramps so i jack up the drivers side and then drain which gets alot more oil out about 4.5 to 5 qt. i do let it drain for 20 minutes or so i just hate all that old dirty used oil thats left in there....3000 miles or 5000km sounds good to me....especially with alot of 9k shifts

robrecht

If you have a MT and therefore 2 oil coolers, the best method is to jack up one side, let it drain, and then the other, and let it drain. You'll get the most oil out of the oil coolers this way. Oil extractor from up above will get almost as much.

jonr-

is that an essential thing that you just "have" to do when changing oil?
I've got the 2 oil coolers, but I wheren't actually planning to jack it up on both sides... is it so neccesary? :=)

robrecht

No, not necessary, but the more dirty oil you leave in the car at each oil change creates an ever growing darker black mark on your soul. Just change your oil a little more frequently depnding on how you drive it or see a priest.

04RX8man

yeah not a must but like robrecht said the more clean oil you put in the happier your motor will be and be for a longer period of time but I only jack up one side and change at 2500 to 3000 miles

Nubo

Well, it's all guesswork, eh? So many different oils, so many different driving styles and conditions, gasoline, etc...

If you want to be scientific about it, there is a thing called "used oil analysis", where you send a sample of oil to a lab, and they tell you what kind of shape it is in. Some people use it to keep tabs on engine wear -- the test will show amounts of wear metals. Others actually use it to *extend* their oil drain intervals -- why drain the oil if the oil is still doing its job? If this kind of thing interests you , check out Blackstone Labs, don't know if that is available to you but I know there are others.

Also, you can find a lot of information (and hype) at "bobistheoilguy.com"

It all depends on how much time you want to spend on it. I did used oil analysis for a while, but got tired of it. Now I just change oil and filter every 3000 to 4000 miles, no fancy tilting of the car. Should be fine and plenty of margin.

Now, if you are looking to make things *easier* on yourself, check thread for "fumoto valve" -- I highly recommend it. For me, the less hassle something is, the more likely I will not postpone it.

robrecht

"fancy tiltting of the car" LOL.

If you really want to get super fancy and make things even easier, not to mention gettiing more dirty old oil out than with the Fumoto--No Tilt Deluxe Special, just get an oil extractor. No more climbing under the car at all.

TrochoidMagic

heard of that... and thought it may be an interesting product to try. but whats stopping me from actually using it on my car instead of doing an oil change the old fashion way?

gravity. plain and simple.
sure you may get dirty old oil out... but does metal particles fall (drain) out?

for me... every little micron of metal shavings taken out the old fashion way is worth the 15 mins effort. and its only 15 mins to do an oil change.

just my 2cent

robrecht

Age-old argument, not gonna settle it here, but supporters of the oil extractor method claim any particles are all in suspension while the engine oil is still hot. The more dirty old hot oil you get out, thefore the more little microns of metal shavings. BTW, I don't have an oil extractor 'cause I'm an old fashioned sorta guy, but I must admit that it sounds easier than jacking up both sides of my car with jackstands. But maybe if I had a lightweight racing jack I wouldn't mind lugging it around so much.