-
Read the WELCOME ALL BMWFANATICS post.
engine flushing
- Thread starter gazza
- Start date
danieljames
Active member
No. Add flush to old engine oil. All the instructions are on the bottle though
netercol
New member
just remember that flushing a badly maintained engine (not necessarily under your ownership) could turn out to be a very very bad idea..
you risk loosening crud built up over years and totally blocking the lube system.. i have seen engines fail catastrophically after a flush.
just a different opinion..
you risk loosening crud built up over years and totally blocking the lube system.. i have seen engines fail catastrophically after a flush.
just a different opinion..
danieljames
Active member
Well if you know it's clean internally then like dieselfan said......He does his with every oil change. But then it also depends on the quality of the oil you're using and how often you do an oil changeCaddy101 said:
gazza
///Member
Well the car was standing for a while due to the gearbox now that's been repaired but having issues with it going into soft cock I mean limp mode I'm doing a service and a few other little bits here and there but the oil is bad, got some sludge and ja poor little car needs some tlc....... Even the ate is filthy so sorting all problems out one at a time.
If doing a flush is not good, what would be best to sort this out?
If doing a flush is not good, what would be best to sort this out?
DieselFan said:
:withStu: on this one..... i also flush all on every oil change using liqui moly engine flush plus..
Sankekur
///Member
gazza said:
Personally I would not bother with an engine flush, I highly doubt the effectiveness of it, rather run shorter service intervals. If you want you can also add some ATF to the engine oil around 1000km before servicing this should also help to clean the motor. This is a gradual way of cleaning the motor.....if you are in more of a hurry you can use diesel instead, which works faster, but has more risk associated with it.
That said if it has sludge beyond a certain point I would not really bother, the only way to clean from there is to strip and clean manually.
I flush the engine with each service too on my E90.
Learnt the hard way with sludge and blocked CCV on my E46,
Dont know if flushing at each service will help with this or not, but hey its worth a try and its only a few bucks in comparison with the pain of a blocked oil separator :smashScreen:
Learnt the hard way with sludge and blocked CCV on my E46,
Dont know if flushing at each service will help with this or not, but hey its worth a try and its only a few bucks in comparison with the pain of a blocked oil separator :smashScreen:
netercol
New member
the point is simply that if you start with a clean engine, a new car or a overhauled engine, condition KNOWN, then a flush with every service is a good idea..
if you have a engine that you dont know how it was treated before you got it, you are simply courting disaster with a aggressive flush (such as diesel) , a less aggressive flush can go either way..
i have also seen older engines start to use oil after being flushed.. the oil control rings being freed from carbon buildup, flex more again and cannot control oil on the worn cylinder walls anymore..
if you have a engine that you dont know how it was treated before you got it, you are simply courting disaster with a aggressive flush (such as diesel) , a less aggressive flush can go either way..
i have also seen older engines start to use oil after being flushed.. the oil control rings being freed from carbon buildup, flex more again and cannot control oil on the worn cylinder walls anymore..
Gordvisr
Well-known member
Some input for flushing, non flushing, i am driving a 1994 Opel kadett 20is since 2002, unfortunately in the same year i lost the motor and had to replace it with an import motor, long story short, this engine gets an oil change within 10000 km, if you should open up this motor to work on it, only engine cleaner and eveything is clean , no oil carbon or nothing, never used engine flush, to scared to use it.
on the other side i bought a complete 200is kadett that was accident damage.
i have removed the head on that motor ( i wanted ) to use on mine for a while, the carbon build up is close to 1mm if not more, it took me a day to clean and still it was not clean, this motor was never serviced, oil was only added when showing low and three times it overheated. ( this will kill a motor if using flush and it comes off, its hard and brittle will defenately block something somewhere )
so to say the least, flushing or no flushing if your motor gets a regular oil service, you should not worry about carbon build up inside the engine except if your rings or sleeves are a bit worn and your combustion chamber gas push back into the sump.
on the other side i bought a complete 200is kadett that was accident damage.
i have removed the head on that motor ( i wanted ) to use on mine for a while, the carbon build up is close to 1mm if not more, it took me a day to clean and still it was not clean, this motor was never serviced, oil was only added when showing low and three times it overheated. ( this will kill a motor if using flush and it comes off, its hard and brittle will defenately block something somewhere )
so to say the least, flushing or no flushing if your motor gets a regular oil service, you should not worry about carbon build up inside the engine except if your rings or sleeves are a bit worn and your combustion chamber gas push back into the sump.
