Oil Consumption?

[R1200GSA]

You imply that those that stick to the recommended rpm limit are also over cautious when opening the throttle. It doesn't follow.



Er sorry Chasr, but by virtue of the fact that you ARE sticking to the recommended rpm limit, you ARE being over cautious when opening the throttle. ........................................ So, what exactly did I miss here ?

 

[chasr]

I meant the amount you open the throttle, the speed at which you accelerate, the level of grunt you use .......... as opposed to timid acceleration.

Oh, and I don't appreciate your last 'picture.' If you don't want to cause offence, add a

 

[R1200GSA]

It makes one wonder how BMW engineers have the temerity to suggest how their product should be treated when there are so many experts outside the factory.

If these BMW Engineers are all knowing experts, why the feck does this site contain so many technical queeries etc......? I suppose we should all just beleive everything we read............. Especially if its been penned by a BMW ENGINEEEEER! WOOOHOOO.

We are not worthy!

This was after all only a post describing my experiences.

 

[NorthernBoy]

The oil being consumed can only be "up the bores" or "down the valve guides" or "leaked on the floor".
If the bores are worn or machined badly, or the piston rings don't work (i.e. bad fitting\design) oil will be drawn up the bore and burnt.
If the valve guides seals are worn or bad fitting\design oil will be also drawn down the valve stem and burnt.
Valve guide seals & piston rings (the oil scraper piston rings) have been around for a long time, and have been pretty much perfected.
Why there is a high (relative) oil consumption with the BMW twin is a puzzle. The Japs bikes (and most cars) seem to run with no oil usage at all? All of my 4 cylinder machines (including BMW cars) did not use any oil, that’s more valves & cylinders than the GS's. I think it must be a question of the machining tolerance being higher in the BMW bike factory! Or is it the dynamic flexing of internal engine components under stress??.
................... and relax..................

I supppose that one reason is that they are air cooled (yes, I know the heads are not), so run over a greater temperature range than most Japanese bikes, and most cars. This means that you need to have wider tolerances.

It is probably part of the reason that they are so inefficient in terms of power and torque per cc.