Thread: the smell of oil

take some in for sampling

I did - before. Had fuel dilution of 5 % :-o Changed the oil and had an open t/stat fixed at the same time. Starting to think that may not have been my only problem - will have it CO tested next week to make sure of mixture etc.

Can it overfuel so much as to wash oil of the cylinder walls and also increase my oil consumption massively?

do a leakdown test and a compression test.

Im guessing your rings are shot.

Sequence of events:
1. Using a bit of oil - manageable; did not even bother me.
2. Car goes in for new plug leads & t/stat. Issues with cooling system and temp gauge starts rising on my way home; I pull off as it goes into red and red light goes on. Back to specialist for radiator clean etc. Only other thing that happened was that they also reset the adaptive values.
3. Car now uses a lot of oil.

?!? Could that one bit of heat have done in the oil rings?

if it was already using oil (and actually using it not just dropping it) past the rings then its on the cards.

you may find that the rings arent actually shot but they are coked and stuck in one position and not able to do their job.


pull the crankcase vent lines and have a look at whats in them then start it up with the oil filler plug removed and see what comes out.

Originally Posted by phuma

Sequence of events:
1. Using a bit of oil - manageable; did not even bother me.
2. Car goes in for new plug leads & t/stat. Issues with cooling system and temp gauge starts rising on my way home; I pull off as it goes into red and red light goes on. Back to specialist for radiator clean etc. Only other thing that happened was that they also reset the adaptive values.
3. Car now uses a lot of oil.

?!? Could that one bit of heat have done in the oil rings?

Possibly if the overheat was quite substantial, pistons can shrink after overexpanding, resulting in excessive piston to cylinder wall clearance, causing poor oil control. Overheating can also reduce ring tension, BUT that mostly has a big effect on compression rings first, excess crankcase pressure is then a symptom.

These later Motronic engines run very close to the edge in temps and leanness, the lovely little Rover V8 has never been so unreliable.. Bring back a twin SU version Hi Comp 3.5 I say, with electronic ignition and decent manifolding.


JC

If you recon your up for a re-ring job ... and you want to try 1 last thing, to get the oil consumption & motor back under control .....

Dump the fancy Magnatec .....

Fill it up with Gulf Western engine oil / Engine life Extender 25/60
Available at Auto 1 .... costs about $25

Similar to this oil .... as I can't find the product on their web site
Comp 50 Plus

I used it @ 220k .... my clock now shows 310k and still going like new....

Mike

Mike - did you run that thick oil only in once, and for how long? Why did you put the thick oil in to start with?