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philiphunter

Original Poster:

159 posts

97 months

[news] 
Tuesday 31st July 2007 quote quote all
Late 2002 model 330ci cab. owned since March 2007, bought from main dealer with 12 months warranty.

I have had to top the engine oil up with a litre of fully synthetic twice over the past two months.

After topping up with a litre and then completing a 500 mile round trip the oil light has come back on.

I will return it to the main dealer as I am not going to buy another £17 top up from shell.

I was wondering if this is a known problem or if there is anything I should check or know about before returning it to the dealer.

BTW: There are no signs of oil burning up in excess from the exhaust/engine and the car seems to perform as it should without any other issues.

Thanks in Advance!

Vee

2,407 posts

119 months

[news] 
Tuesday 31st July 2007 quote quote all
My 2002/52 330ci has started to used oil same since its last service.
I used Castrol Edge Sport 0W-30 but then found it should have been just the normal Castrol Edge 0W-30.
Supposedly the sport is thinner and gets through the seals.
13k since last service and I've gone through 3 litres of top up.

I'll revert back to the normal Castrol Edge next month and see how it goes.

Please post back on how your get on with BMW.

Egbert Nobacon

2,832 posts

128 months

[news] 
Tuesday 31st July 2007 quote quote all
Bit of a long shot here but I had a similar issue with sudden increase in oil consumption on an old E39 528i - it was a mystery where it was going !

It was caused by a failure of the crankcase oil seperator valve. It sat below the inlet manifold and was a bugger to change.

Dino D

1,855 posts

106 months

[news] 
Tuesday 31st July 2007 quote quote all
My 2002 330i used to drink the stuff. 5l every 10k miles.
It had 72k miles on the clock when I sold it. Nothing wrong, just thirsty.

A mates new V10 M5 used to drink too....

PS: I had been under the car and found no leaks and there was no oil in the exhaust pipes either so it must have been consuming the stuff, not leaking.

If it leaked through the crankcase would it drip or show somewhere under the car???



Edited by Dino D on Tuesday 31st July 10:12

Muzzer

3,814 posts

106 months

[news] 
Tuesday 31st July 2007 quote quote all
I had an '01 320ci that used to like oil aswell. About a litre every 5k miles IIRC

At the last service, I put the best, fully synthetic, made-from-Jesus's-wee oil I could find in it and from then it was fine.

Get it checked over by the dealer but I wouldn't worry too much.
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ian_cab28

137 posts

102 months

[news] 
Tuesday 31st July 2007 quote quote all
I've been through this as well with a 3.0l 2001 x5, BMWs limit is 1 litre per 600 miles, if it is genuinely going through 1L in 500 miles they will start to investigate it (one possibility being the crankcase breather valves as already mentioned, which is hidden under the inlet manifold. They will change it automatically for you I would guess if under warranty. The other is issues like piston rings and I read somewhere that the valve seals (early m54 engine) can leak as well.

In general it seems it is not uncommon for modern engines where they try to cut friction for economy to sometimes lose some oil control in the process (not japanese!). 1L in 5000 is nothing. My X5 does 1L in 1000 which bugs the hell out of me given my 2.8 144k mile 5 series does next to nothing. Keep pushing the dealer they are generally useless e.g they suggested just changing the crankcase valve on my X5 a second time (different dealer) this time at my cost £450...a quick google found a bmw pdf illustrating the correct test procedure on this valve to determine it's correct operation with a bmw special tool manometer! did they do this first? no just plug and p(l)ay, absolutely rubbish ok when BMW warranty co are paying but somewhat frustrating aftwerwards!!!


I think the root cause for my level of oil consumption is insensitive running in , it was a demonstrator intially. good luck keep us informed as to progress, clearly a new engine is the way to go, I'd be interested to hear how they test in detail beyond the CVV valve, i.e compression tests , boroscope inside the cylinder to determine if new valve seals/new block required, I wanted them to do this more "engineering based" approach on mine but they seemed stuck on the "top up/tag the mileage/change the valve " mode. Any techies on here at the mo.

DaveR

1,068 posts

169 months

[news] 
Tuesday 31st July 2007 quote quote all
My 330i has done 114k now and I reckon on getting through a 4L (or are they 5L?) container between services (13-15k). I just use a 10w-40 semi-syn, the same as my indie uses when servicing it.

That works out at about £20 between services which is hardly worth worrying about when considered in the context of 15k miles worth of petrol costs!

FesterNath

652 posts

121 months

[news] 
Tuesday 31st July 2007 quote quote all
Check the handbook for the acceptable limits before you go to see BMW. Just incase you get the 'they all do that, sir'.

jay123

157 posts

93 months

[news] 
Tuesday 31st July 2007 quote quote all
shouldnt really use that much oil. it sounds like the wrong grade of oil is in the car currently.



apparently some modern engines are very sensitive to the type of oil in there.

CIS121

1,200 posts

98 months

[news] 
Wednesday 1st August 2007 quote quote all
I've got a 330 and you've guessed it, it uses about a litre every 3-4k which is actually pretty good for these. I know a few people who own the 3 litre engine and it uses a litre every 1 to 2k typically

Let us know if you have any joy with BMW.

philiphunter

Original Poster:

159 posts

97 months

[news] 
Tuesday 28th August 2007 quote quote all
Finally got back to reposting!

BMW said 1 litre to 1 k miles is fine, anything more and it should be checked out.

Vixpy1

41,334 posts

149 months

[news] 
Tuesday 28th August 2007 quote quote all
philiphunter said:
Finally got back to reposting!

BMW said 1 litre to 1 k miles is fine, anything more and it should be checked out.
what oil are you using?

philiphunter

Original Poster:

159 posts

97 months

[news] 
Wednesday 29th August 2007 quote quote all
I was using Shell Helix Fully Synthetic at £17 a litre, but have since bought a gallon of fulyy synthetic recommended by a local independent for £25.

Patrick Bateman

5,498 posts

59 months

[news] 
Saturday 29th October 2011 quote quote all
Holy thread revival Batman!

Mine appears to be using around 1 litre every 600 miles (roughly).

When I remove the oil filler cap with the engine running the engine note does change, I've read that's a quick check to see if the crankcase breather is clogged (no note/idle change = blocked).

Can't see any leaks, doesn't seem to be smoking blue or anything like that either.

Mustard

6,889 posts

130 months

[news] 
Saturday 29th October 2011 quote quote all
As mentioned earlier Oil Separator is one of the main culprits, but high oil consumption does seem fairly normal on 3ltr M54's .... less of an issue on 2.5ltrs. smile

My 2.5 has now done 90k (30k by me)and seems to want a litre (edge 5w-30 or 0w-30) after 9k as does my fathers

Got an M51 2.5tds with 100k on it that uses far less than most of the figures quoted!

4rephill

1,997 posts

63 months

[news] 
Saturday 29th October 2011 quote quote all
Wow!, Dr Frankenstein would be proud to bring something this dead back to life!. biggrin



E46 330i oil consumption varies wildly form car to car. BMW's official acceptable oil consumption rate can be as much as 1 litre of oil every 600 miles.

The crankcase valve (CCV) can be a culprit in a lot of cases but not always (it's still worth changing it if funds allow though).

There are some theories that it's all to do with how these engines were run in when new but I've not seen anything to prove that theory 100% yet.

Patrick Bateman

5,498 posts

59 months

[news] 
Saturday 29th October 2011 quote quote all
I've seen things to do with piston seals and the like.

I can live with it.

Not to mention doing the crankcase would probably fund the cost of oil for over a year anyway.

Edited by Patrick Bateman on Saturday 29th October 18:06

4rephill

1,997 posts

63 months

[news] 
Saturday 29th October 2011 quote quote all
Patrick Bateman said:
Not to mention doing the crankcase would probably fund the cost of oil for over a year anyway.
So long as you're aware that it's not a guaranteed fix and that it could simply be an additional cost to that of the oil for a year.

Patrick Bateman

5,498 posts

59 months

[news] 
Saturday 29th October 2011 quote quote all
Very true.

I don't think mine is clogged going by that check I mentioned- providing it's valid.
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