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how much oil does you scoob consume - 2.5 engines.

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Old 21 May 2010, 07:40 AM
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p.rite.sh
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Default how much oil does you scoob consume - 2.5 engines.

Hi all,

I have recently had the head gasket changed and have noticed that the car seems to use a fair amount of oil, all my milkeage is motorway and usually sitting at 4k revs.

Is this normal, its a 2.5 engine on the hawkeye sti.

Thanks
Old 21 May 2010, 08:06 AM
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sti_rye84
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have you noticed this before your headgasket went and is there any evidence of a leak?
Old 21 May 2010, 08:07 AM
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p.rite.sh
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i didnt really notice it as the headgasket went pretty much as i had it. no leaks that i can see mate...
Old 21 May 2010, 08:49 AM
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sti_rye84
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how much oil is it using
Old 21 May 2010, 08:58 AM
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p.rite.sh
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erm, i've put in a litrefor 450 miles, to be fair, it wasnt all gentle driving though.
Old 21 May 2010, 09:01 AM
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Shaun
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If it's used a litre in 450miles that sounds excessive for an OE setup. Intact that's excessive full stop!

Last edited by Shaun; 21 May 2010 at 09:02 AM.
Old 21 May 2010, 09:30 AM
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My 2006 2.5 WRX Hawkeye use practically no oil, in fact my last oil change was 2k ago, I drive the car hard all the time and I cannot see that the oil has gone down on the dipstick at all. My car has 43k FYI.

HTH

Jack
Old 21 May 2010, 09:37 AM
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Butty
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I never had any serious oil usage even with an HG leak.
Oil use did go up a little when I started remapping, but a catch tank solved that.
The worst it ever got to was about 100 ml/1000 miles with mostly motorway use.
Old 21 May 2010, 10:09 AM
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Mus
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mine hardley uses anything and i check my oil excessively just to be safe
Old 21 May 2010, 11:38 AM
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greatgonzo
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2006 spec d mapped to 333 bhp no oil useage.
Old 21 May 2010, 11:57 AM
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alcazar
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Is it true that a forged engine WILL use oil? Someone on another forum mentioned it........
Old 21 May 2010, 12:23 PM
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53
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Originally Posted by greatgonzo
2006 spec d mapped to 333 bhp no oil useage.
+1 2500 miles no oil used.
Old 21 May 2010, 12:26 PM
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Tidgy
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how much did hte headgasket cost you? (price will give an indication of what was done)
Old 21 May 2010, 12:35 PM
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Interesting thread, my 2.5 forged, uses wayyyy too much.
I believe i have a problem with a piston ring!

Old 21 May 2010, 01:06 PM
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MY07 RB320, oil changed every 6 months - no usage!
Mainly motorway, with a play at the weekends!
Old 21 May 2010, 06:22 PM
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Its a possibility that the piston rings have lost their tension if the engine has been overheated at sometime.
A Compression Test and Cylinder Leakage Test would narrow the problem down.

Mick
Old 21 May 2010, 07:41 PM
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Broken ringlands
Old 23 May 2010, 12:20 PM
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sti_rye84
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hey if the head gasket has been replaced take it back as the car as been overheated too much and piston rings are ether burnt out or stuck in effect you need a rebuild or new motor mate 1 ltr per 450 miles is way too much
Old 25 May 2010, 11:24 PM
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p.rite.sh
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its going in next week, many thanks for you responses.

Im driving it gently to see if it drunks any until then

thanks
Old 26 May 2010, 10:16 AM
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badman1972
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I'm sure I've read before that normal use can be anything upto 1 litre per 1000 miles, but that would still suggest yours has excessive use. Good luck with the checks and hope its simple/cheap mate...........

Jeff
Old 11 June 2010, 01:20 PM
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DaveBeck
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ive gone from full to low in about 1k miles on mine. Mine is a built 2.5 with forged pistons also.

Going to monitor usage now.

Always thought forged engines use oil but im not sure on amount to expect
Old 11 June 2010, 05:20 PM
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dunx
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I remember bigarf's built 2.5 used to fill the catch can's, catch can with a litre in about 70 miles....

BP shares anyone ?

dunx
Old 12 June 2010, 10:47 AM
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RS74
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i've got 2.5 06 wrx, cometic head gaskets, with td05 18g, uses about 0.8 ltr every 1000 miles with hard driving, i can also smell a little burning oil from exhaust when oil temp up ,i've poss got oil ring problem so going to monitor it.
Old 12 June 2010, 01:02 PM
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Cd09
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Ye mine hardly uses any oil no matter how i drive it, obviously its always warmed up n cooled down properly though. It is a standard engine as well, no mods.
Old 12 June 2010, 03:53 PM
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p.rite.sh
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how many miles have everyones cars done...im at 45k
Old 12 June 2010, 04:01 PM
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bigarf
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this is a good one,the 2.5l forged engine i had built at pennine subaru used a litre of oil every 100 miles.
Old 12 June 2010, 04:49 PM
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Ian
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Originally Posted by bigarf
this is a good one,the 2.5l forged engine i had built at pennine subaru used a litre of oil every 100 miles.

did they put all the bits back in when they rebuilt it
Old 12 June 2010, 05:05 PM
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Cd09
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Originally Posted by p.rite.sh
how many miles have everyones cars done...im at 45k
34k miles regular service's
Old 12 June 2010, 06:09 PM
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billsandhu
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mines is a forged 2.5. the oil use between servicing is barely measurable.
Old 12 June 2010, 06:14 PM
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bigarf
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Originally Posted by DaOne
did they put all the bits back in when they rebuilt it
that was the 3rd attempt mate,the first build used so much i had to put another bottle onto the catch can to catch the flood of oil running through it.i think you would call that a little excessive.


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