bletch

I want to do an oil change on my 2002 Sti, but someone has told me its not as easy as on a 'normal' car is this true???

robsw

It is as easy as on a 'normal' car, it's just some people like to blow it out of all proportion.

corradoboy

Only bit that some don't know is the "priming" of the filter, or filling it with oil before fitting. Top it up 3-4 times as the level drops as the oil penetrates the filter gauze. Some remove the crank position sensor before the post change start-up to circulate fresh oil around before the engine is put under load, but others say that the engine is under more load when turning on the starter motor with a cavitating oil pump than when just sat on idle. Other than that, the usual applies. Warm the engine through, remove sump nut and drain. Go for a cup of tea. Remove old filter and fit new primed one. Refit sump nut with new compression washer. Fill with fresh oil (4.5l) until on lower mark of dipstick. Start and run on idle for 10 mins then stop and go for another cup of tea. Check level and top up to bang in between the 2 marks on the stick. Start up and take out for a small drive, keeping under boost. Check for leaks on return and recheck level after another 10 mins. Refit undertray and stuff. Look smug having saved yourself £80

Soobmeister

Over to you PSLewis!!!

Gear Head

iTrader: (2)

I think even Mr Lewis himself even primes the filter these days!
Where is the old boy anyway??
To busy posting under all his other bogus user names.

Shark Man

No need. 30seconds is long enough.....the oil pump can flow at gallons a minute. Ok make that one minute then

Stand for at least 30seconds before checking level though, after tuning off and after filling.

DO NOT put in 4.5 straight away in one go. YOu pose more risk of overfilling. better to put 4-4.2 litres in, start, run, turn off and recheck then add to suit.




This applies to any car, Subarus aren't special.

bletch

I am Based near East Grinstead, is there anyone close enough to come and show me how to do it so I can learn properly, happy to pay for the time and provide the tea and biscuits.

[Davey]

There is no need to "prime" the filter, unless it takes you several days to undo the oil filter and put the new one one.

Same with any car:

*Just drain the oil.
*remove the filter.
*refit new filter with a little oil on the gasket.
*replace sump plug.
*fill with required amount of oil.
*start engine, run for 1 minute
*turn off engine
*let the oil settle
*check level.

Its irrelivant how much oil you get through the filter its still got to get up into the engine and the oil pump will take less than a second to fill the filter.

st3v3

Davey do you know anything about cars?????? the other day you wanted to tap out a spark plug,thus putting swarf into the engine and not bothering to clean out the bore after and now you dont want to prime a filter??

YES prime the oil filter,FFS,it only takes a couple of minutes,why wouldnt you ?

It would take more than a "second" to fill an oil filter via the pump,in fact how did you come to that conclusion?

Forget about taking off the crank sensor,you may throw up a CEL light.

Just do as corradoboy has said and you should be fine.

Shark Man

98% of all other cars do not oil filter priming.

1% being pre 1992 (1967 onwards) Rover V8 (although, try doing it on a TVR Chimera...messy...seing it's upside down ). This is official as Rover did issue a TSB (technical service Bulletin) back in teh 70/80's.

The other 1% is based on conjecture spouted about Subarus on this very Fourm, as Subaru have NEVER issued a TSB on oil filter priming

st3v3

this maybe so.....but common sence tells you to

corradoboy

You WILL get a CEL light, but 4-5 starts once reconnected and it goes out.

Shark Man

Common sense vs. Conjecture....

Sure, give it the benefit of the doubt, just don't go preaching it as gospel

*AL*

There is no harm in 'priming' the oil filter, very worth while imo.

robsw

Prime it if you want, don't prime it if you don't want.

Either way it really doesn't make any difference whatsoever. Personally I do not pre-fill the oil filter.

94impreza

If you can come down to Crawley i'll go through it with you. Not done an oil and filter change on a car as young as yours but will be glad to help. Have you got the filter spanner ?

[Davey]

Why would you?? its a complete waste of time? I have changed the oil on **** knows how many engines and how many have had oil pressure problems after starting? errr Zero? Think how much oil the pump is flowing through the filter to obtain the kind of pressure levels we are talking about, pouring a few mm into the filter before fitting it is like saying if you put your head out the window and blow your car goes faster?

As for tapping the plug I did say its not the best idea and the combustion exhaust would draw most of the ****e out, one of the advanges of the flat four is the swarf isnt dropping down to stick on the piston, its falling down towards the exhaust valves.