Oil Consumption

flybobbie said:
Sounds like bo**ocks to me.
My daily drive is 7 miles each way, half urban, half country lanes.
Some spirited driving when the temp goes beyond 80-90 C.
My oil consumption is 1 litre in 10k miles.

I could understand higher oil consumption on direct injection, but not the N52.
Probably why they went electronic dipstick, it's just a bit vague as to how much oil is used. Stops people complaining.
Interesting that when i bought the car the exhaust would be very sooty like a diesel.
Who hasn't have to give the tail pipe a good scrub to clean it.
But since i bought at 29k miles i have used Mobil 1 to 86k miles and i can't remember having to clean soot off the tail pipe.
I think BMW have just had some engines that are poorly manufactured and just coming up with excuses.
All the other cars i have owned never needed oil topping up to 3k or 5k changes, other than a RX7.

I have been doing 10k oil changes, but thinking of going to 6k.
Click to expand...

Why would you think higher oil consumption applied to direct injection engines? :?
Rob
 
DI fuel can be squirted directly onto cylinder bores if not designed right, washing off surface oil. This produces more bore wear increasing oil consumption. I think Honda had this problem. Indirect injection as N52 and a swirl around the valve aids in mixing before ignition.
So i read, no personal experience.
 
In the past the go to solvent for cleaning car engine and parts was petrol.
It's a good degreaser.
And diesel a goodish lubricator, reason why DI diesel engines last so long.

Just wish i had put two stroke oil in my RX7 fuel tank, the enine might have lasted longer.
 
I'm guessing oil consumption via the oil ring is one reason the N52 last so long. After all, how can you tell when the engine is worn out if you've been adding oil since it was new :rofl:

I read testing the CCV pressure would indicate a problem without dismantling the engine. That sounds like a good starting point since it's running good & I'm just curious if there is a problem. (1/2 qt/1000 miles)
I saw on you tube a fellow fitted the oil fill cap with a hose fitting (easy enough to do to a spare cap) and the vacuum readings for each engine are easy to find. Decreased vacuum could increase the amount of oil vapors passing the oil ring. What do you think?
 
If you’re worried about oil consumption buy a S54 M - mine & basically anyone I’ve asked don’t use any between services which is amazing given the enthusiasm they experience

However, my old 3.0 needed a litre every 1500 miles... & IMO ran great through all of her life when with me

Don’t worry... it’s just a feature
 
Jembo said:
If you’re worried about oil consumption buy a S54 M - mine & basically anyone I’ve asked don’t use any between services which is amazing given the enthusiasm they experience

However, my old 3.0 needed a litre every 1500 miles... & IMO ran great through all of her life when with me

Don’t worry... it’s just a feature
Click to expand...

Thanks for the reassurance. I do keep reading that.
 
scootr said:
I'm guessing oil consumption via the oil ring is one reason the N52 last so long. After all, how can you tell when the engine is worn out if you've been adding oil since it was new :rofl:

I read testing the CCV pressure would indicate a problem without dismantling the engine. That sounds like a good starting point since it's running good & I'm just curious if there is a problem. (1/2 qt/1000 miles)
I saw on you tube a fellow fitted the oil fill cap with a hose fitting (easy enough to do to a spare cap) and the vacuum readings for each engine are easy to find. Decreased vacuum could increase the amount of oil vapors passing the oil ring. What do you think?
Click to expand...

I think if the inside of the inlet manifold is coated in oil that’s a good enough indication that all is not well with the breather system. :?
Rob
 
Smartbear said:
scootr said:
I'm guessing oil consumption via the oil ring is one reason the N52 last so long. After all, how can you tell when the engine is worn out if you've been adding oil since it was new :rofl:

I read testing the CCV pressure would indicate a problem without dismantling the engine. That sounds like a good starting point since it's running good & I'm just curious if there is a problem. (1/2 qt/1000 miles)
I saw on you tube a fellow fitted the oil fill cap with a hose fitting (easy enough to do to a spare cap) and the vacuum readings for each engine are easy to find. Decreased vacuum could increase the amount of oil vapors passing the oil ring. What do you think?
Click to expand...

I think if the inside of the inlet manifold is coated in oil that’s a good enough indication that all is not well with the breather system. :?
Rob
Click to expand...

Do you mean inspecting it without removing it?
 
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