General 100HP drinking loads of oil

[Advanced Driver]

I changed the oil last week and my 100HP seems to have used approx 200-300ml of oil in a single week! This is crazy, I think I need to get rid of the car, I don't want to be topping up oil every weekend

Is there a quick way to see if it's leaking? If it's leaking oil (from the sump plug or oil filter) it would get soaked up on the undertray wouldn't it, or does it miss the undertray? My garage floor is clean, so it's either all on the undertray or it's not leaking.

 

[Polypedates]

That sounds like the oil filter capacity - did you fill that with oil before you fitted the new one? If not then on first run some will end up in there needing a subsequent top up.

I'd leave it a couple of weeks and see if it stabilises, mine uses about a litre or so between services so I tend to have to top it up every month.

HTH

 

[Advanced Driver]

That sounds like the oil filter capacity - did you fill that with oil before you fitted the new one? If not then on first run some will end up in there needing a subsequent top up.

I'd leave it a couple of weeks and see if it stabilises, mine uses about a litre or so between services so I tend to have to top it up every month.

HTH

Yes I checked the level after filling the filter.

 

[306maxi]

It's not going to magically use 200-300ml of oil all of a sudden after a service. You've obviously not put enough oil in at service time OR you've overfilled it now. Unless of course you've not done the sump plug or filter up tightly enough.

 

[trackdayqueen]

I think the only thing you can do, is get rid of the car as it clearly doesn't suit you.

 

[pandasam]

:yeahthat:

i think your the same guy who had trouble with the gearbox?

i reckon you should get rid as you seem to have got a bad one

 

[306maxi]

:yeahthat:

i think your the same guy who had trouble with the gearbox?

i reckon you should get rid as you seem to have got a bad one

I doubt he's got a bad one. For it to happen right after chaning the oil and filters is a bit coincidental non?

 

[Advanced Driver]

I doubt he's got a bad one. For it to happen right after chaning the oil and filters is a bit coincidental non?

No, it has always been drinking a lot of oil, this is just more than normal. It may be ok now though. It's weird, I checked it after approx 30-50 miles since changing the oil and it hadn't used any oil. At the end of the week it hand then suddenly gone down loads. After filling it up again it didn't use any during the first day, and I'm not going out in the rain to check it today. I'll have to keep a close eye on it.

 

[306maxi]

No, it has always been drinking a lot of oil, this is just more than normal. It may be ok now though. It's weird, I checked it after approx 30-50 miles since changing the oil and it hadn't used any oil. At the end of the week it hand then suddenly gone down loads. After filling it up again it didn't use any during the first day, and I'm not going out in the rain to check it today. I'll have to keep a close eye on it.

Define "lots"

 

[Henne100HP]

Oil consumption is on quite a few 100HP's an issue.
Mine does a liter on about 2500 miles.
My brother in law does have an worse oil consumption.
He needs to fill it up with a liter each 1400 miles.

So it needs a bit more oil than other cars.
Our Nissan Micra needed a liter on 9500 miles.

My friends Impreza GT Turbo and BMW E30 316 needs a 1 liter on 6500 miles.

So it's a bit odd...

 

[harry monk]

It could be the use of fully synthetic oil. If the rings didn't bed in when new this does happen. Next oil change use minerla oil, run it for at least 500 miles, which will allow the rings time to bed in, then go back to semi synthetic oil.
I think there is far too much hype about fully synthetic oils these days, and many people get sucked in to the belief it is a must for their car.

 

[trackdayqueen]

It could be the use of fully synthetic oil. If the rings didn't bed in when new this does happen. Next oil change use minerla oil, run it for at least 500 miles, which will allow the rings time to bed in, then go back to semi synthetic oil.
I think there is far too much hype about fully synthetic oils these days, and many people get sucked in to the belief it is a must for their car.

I seriously doubt though anyone changes their oil in their car immediately when they buy it new. The oil it comes with is not synthetic and this oil isn't going to be changed for 12000miles.

I wonder if limiting the revs too much when brand new can affect the bedding in process. This is why the argument goes that you should rag a new engine pretty quickly to get the rings bedded in.

I ran mine in pretty hard and it does use some oil. Probably about 1.5 litres in 12000miles/pa. Which I guess is perfectly acceptable but is no way excessive. I can leave it three months between top ups.

 

[pandamonium24]

As above, i ran mine in hard then changed the oil early. mine burns a resonable amount of oil, maybe a litre every 3k, they all do it, i wouldnt worry. i run castrol slx in mine. always check 5 mins or so after a drive, usually aim for about 3/4 up the dipstick.

 

[cooperman]

Hi,

Bought my 100HP about a week ago, went and checked the oil (after driving for about 20miles) the other day and found it was on min, I put just under a Liter in to get it to the Max line, It had its last service 6000 miles ago (its got 29,000 on the clock) and spoke to the last owner and they said they had never put any oil in.
Went and checked (when engine was stone cold) it today after doing a 150mile round trip a few days ago and it seems to have gone down by just under 1/4, What my question is does the level change depending if the car has been run or not?? (i.e oil still in the oil pipes on a hot engine giving a slightly lower oil level then when its cold and all the oil sitting in the sump)

 

[pandamonium24]

yes.. which is why you need to check it five mins or so after use (on a flat surface!).. if you check it stone cold it will be different to when its hot. My understanding is that oil expands when the engine is upto temp, so if your putting it on the max line when cold it'll be overfilled if anything.

 

[cooperman]

yes.. which is why you need to check it five mins or so after use (on a flat surface!).. if you check it stone cold it will be different to when its hot. My understanding is that oil expands when the engine is upto temp, so if your putting it on the max line when cold it'll be overfilled if anything.

Cool, that would explain why the level had gone down when i checked it when it was cold, I topped it up and ran it for about 10min rechecked the level and its about 1mm under the max line so fingers crossed it will be ok!

 

[robjnr]

Always check the oil when cold. You will know how much true oil you will have, if you check after the car has been run then the oil wil still be circulated around the engine so will not give you a accurate reading

 

[cooperman]

Always check the oil when cold. You will know how much true oil you will have, if you check after the car has been run then the oil wil still be circulated around the engine so will not give you a accurate reading

Yeh just got abit confused as the oil level seemed to go down when the engine was stone cold compared to when it was checked when being warm.

 

[Golgarth]

Always check the oil when cold. You will know how much true oil you will have, if you check after the car has been run then the oil wil still be circulated around the engine so will not give you a accurate reading

Gotta disagree, always check oil when the engine is hot as said previously.

Fill to the max then run a car up to warm and you will be overfilled.

 

[cooperman]

I will hold my hands up and confess that i did top on the oil while the engine was hot (so much so steam was coming of the oil as i was pooring in when it hit the inside of the engine) . I topped it up to the max level, the problem i hand was when i checked it this morning when it was stone cold it was just above 3/4 full. This was the thing that surprised me that i'd lost (or thought i'd lost) 1/4 of oil in only 200miles but hearing what everyone has said think it was down to the hot oil when i filled it to the max line giving a false reading!! :bang: