TBMeech

Am going changing my oil this weekend on my MY99 STI-V.

When I put the new filter on do i need to part fill it before I put the fresh engine oil in? - I've not done this on previous cars / bikes when I change the oil, but I seem to remember someone doing this before on Scoobs, any help as always appreciated

Cheers

Jay m A

iTrader: (2)

I am no expert but I am pretty sure you should fill the new filter with the new oil before putting on. this volume of oil should be part of the total you put in - I think its 4.2 litres all in, maybe 4.3? I'm sure somebdy who actually knows the answer will respond

Justin

TBMeech

Cheers m8, suprisies me that the filter should be pre filled, never had to do this on any other car or when I raced motorbikes, I was under the assumption that it's 5l for a complete oil and filter change?

Alpine

I was always told to fill the filter before bunging it on.. On the basis that it allows the oil to circulate faster on starting the engine for the first time.. Interested to know if garages do it though...

fivepint

FILL IT!FILL IT!FILL IT!FILL IT!FILL IT!FILL IT!FILL IT!

BTW when u r filling it leave it settle, and then top it up agin, its suprising how much it can hold!!!

cheers

Mouser

Also a good idea to run the engine for a while and re-check the
filter is properly hand tight.
Mouser.

Jay m A

iTrader: (2)

Mate

5litres sounds far too much, I'd suggest phoning a respected dealer/specialist and get the full lowdown - you definately do not want to overfill it, the Impreza is a tad sensitive in this area.

Justin

P.s. best try a specialist rather than a dealer

oh on another note, have you got in touch with Deep about the OB?

TBMeech

Ok.....

Just spoke to a renowned man in the knowledge, ex Scob mechanic, the low down is:

5l For Oil & Filter Change

Filter as recommeneded by most of you helpful people should be part filled and the amount obviously taken out of the 5l

4.5l For Just a Oil Change

Hope this helps.

john banks

You may also want to disconnect the crank position sensor and crank the engine until the oil pressure light goes out before reconnecting and starting the car. That is if you are paranoid about your big ends like some of us

TBMeech

John,

Good thinking.

I take it the crank position sensor wiring is fairly obvious?

Jay m A

iTrader: (2)

I stand corrected

Oh well at least you know for sure

Justin

TBMeech

Jay,

It was worth double checking tho just to be on the safe side

john banks

There is a plug at the front of the engine bay - behind the rad, in the middleish. Look in the link manual for a sensor location diagram - the Link manual is on the MRT site.

TBMeech

John,

Many thanks m8, a true gentleman

I shall investigate tonight!

WREXY

4.5 litres is with filter change. If you put in 5 litres, you will contaminate the solenoid and your car will run rough, you will have boost problems etc. Take the advice of pre filling the filter, but put no more than 4.5 litres.

Cheers,

Wrexy.

Razor2001

Hi,

I thought the new STi-7's JDM and UK took 5 litres ????

Cheers,
Ray

WREXY

Don't know about the STI 7s, however this thread is about a Version 5 STI.

Cheers,

Wrexy.

duczz

I have always done my oil changes and have always filled the filter with oil , its one of things which you dont have to do but why not do it as it can only do good!! ... 5 Liters sounds like far too much oil to me, when I replace the oil and the filter , I use 4.5 litres all up, if you used 5 liters you would be overfilling it!

Jolly Green Monster 2

I think the prefilling of the oil filter is a good idea, never done it on other cars or bikes.. but then at least the Scooby filter is the right way up to allow it to be done easily!

Everything else has been sideways and oil would pour everywhere doing a change if I had prefilled the filter.

Whilst you are disconnecting the crank sensor you might as well take it out and clean it, they get covered in crap.. you can also clean the cam sensor while you are at it which looks the same as the crank sensor and is below the oil filler..

JGM

Jolly Green Monster 2

If you disconnet the crank sensor and crank the engine over to get the oil pressure up... then reconnect the crank sensor..

Will you get a check engine light for the fault of no crank signal but a cam sensor signal?

Should I disconnect both crank and cam sensors?

JGM

TonyBurns

iTrader: (3)

Yup its 4.5 cos i always get half a litre back after ive had me car serviced
Dunno about the new STI7 but seeing that its the same capacity i would have thought it would be the same ammount of oil?

Tony

DaveMcC

JGM

I disconnected crank sensor only - no check engine light problems. Don't see why you'd need to disconnect both.

Dave

Jolly Green Monster 2

Dave,

Okay cheers.. I just know that there is a check engine light code for cam sensor reading and no crank sensor..

not sure about the otherway around...

<two seconds checking>

The code 13 is no signal from cam shaft sensor but signal from crank....
Code 11 is no signal from crank sensor when starter is switched on.. I remembered them different..

So why do you not get an error code?!?!

I will probably do an ecu reset at the same time as engine oil change anyway but just curious..

Cheers
JGM

Floyd

iTrader: (9)

I always fill the oil filter before re fitting but what I don't understand is why you need to crank the engine afterwards?

The oil is in the sump and in the filter so when I start the engine there will be oil pressure in the usual time, right?

If we're worried about crank bearings or oil pump then we should be worried every time we stop and the oil drains into the sump? Surely there will be enough oil film between the bearings not to worry about this?

The dealer wouldn't do it, I'm sure.

F

Floyd

iTrader: (9)

Anybody?

F

DaveMcC

Floyd

I can't answer the "why?", but it takes up to 2 mins cranking for the oil pressure light to go out. The first oil change I did I cranked for about 30 secs (and I had filled the filter before fitting) and it still took about 5 secs after the engine fired before the pressure light went out - I guess the surfaces still have a coating of oil, but this can't do it much good.

Dave

Jolly Green Monster 2

Thanks Bob...

I am nervous about oil choice as ca had been running on semi-synthetic Helix from day one and now 105500miles covered..
do engines get used to an oil?

JGM

Bob Rawle

Gents, when you fill the filter you first fill then leave for 20mins then refill, the paper element absorbs oil so you need to allow time for that.

Fill engine untill the full mark on the dip stick is reached, thats what its there for ... wether thats 4.5 or 5 litres is irrelevent, depends on the sump.

Remove crank position sensor connector and crank till oil pressure warning light goes out, this can take for ever but DO IT ... don't crank for more than 15/20 secs at a time though else you burn out your starter motor.

Once light is out the refit connector and start engine asap, allow to run for 5 mins maybe then stop and check oil level, add to get to the top hole (the top knotch is to indicate fill when cold)

btw cleaning the sensor does nothing ... its a proximity sesnor and dirt is same as air to it.

Another thing ... always use the genuine Subaru oil filter not an aftermarket cheaper alternative ... very important !!

[Edited by Bob Rawle - 8/11/2002 10:57:41 PM]