Gear Oil R1200RT Twin Cam

[Our Gee]

My "Rider's Manual" does not give any info on the required Specification or Quantity of gearbox oil. Please can anyone recommend a quality Gear Oil of the correct Spec.
Many Thanks.

 

[Wierpig]

Castrol saf xo or I think it's called syntrax now.same as final drive.just fill till it appears at the level hole.youll need 2 lts to do both

 

[DrFarkoff]

Its no biggie you can use your preference

EP 75W90 fully Synth for Example the only thing you Must make sure of, is that it is GL5 specification

 

[DaygloDavid]

The required specification is as above, Castrol Syntrax Longlife 75W-90 (Formerly SAF-XO 75W-90).

The Haynes Manual gives a Gearbox oil capacity of 700 ml & a Final drive oil capacity of 180 ml.
(The Gearbox is filled to the lower edge of the filler hole, the Final drive is a measured quantity).

Having changed both the Gearbox & Final drive oil on my RT, I can confirm that 1 litre of oil is sufficient.

 

[Myke Rocks]

My "Rider's Manual" does not give any info on the required Specification or Quantity of gearbox oil. Please can anyone recommend a quality Gear Oil of the correct Spec.
Many Thanks.

Why would you need to know?
I live by the old Merkin maxim: If it ain't broke, don't fix it. RT 9 years of age, 45,000+ miles on it, never checked gearbox oil level yet, never looked at rear hub oil or changed it yet, never had the rocker covers off.
I know it's disgustifying, etc, etc, etc, and those who do such things would never buy a bike from me etc etc etc.
I do change the oil & filter every 6,000 miles using some brand or other of fully synthetic, without regard to it's make or spec.
I changed the plugs at 24,000 when it started to miss on full throttle, but that's been it.
Now I know my bike is totally worthless in the eyes of those who spend their weekends dismantling and cleaning them, but who cares?
I have not spent every weekend over the last six years on worthless effort, nor given the dealer circa £6000 to maintain my bike and warranty. To date, I have spent under £500 in parts and oil doing it myself over the same period.

It's not a God, It's a motorcycle. Is the front cover corroded?
I don't know. I have never looked, nor do I care. No, I don't wash it to find out. Gets a power wash by someone else at the end of the summer, and that's it.
Myke

 

[BMPete]

Having just spent £15 K I do not think I'll use your approach. Just my opinion but 45K miles in 9 years is not a lot and thats why your gearbox and final drive are OK. Maybe ? Agree my bike will hopefully not see BMW service because I am perfectly competent to carry out the work myself and save lots of dosh. Money saved will go on correct spec oil and service items and fuel so I can ride. At 15K a year I ride and fettle.

 

[Our Gee]

Well Myke, each to his own as they say. Personally I couldn't live like that. Uncannily I do get what is probably a warped pleasure from tinkering, cleaning, polishing and maintaining all things mechanical.

 

[Myke Rocks]

Well Myke, each to his own as they say. Personally I couldn't live like that. Uncannily I do get what is probably a warped pleasure from tinkering, cleaning, polishing and maintaining all things mechanical.

From I was a teenager, and well into my forties, I was of similar ilk, until it gradually came to me that I was causing more problems than I was curing.
To take a mild example on this site:
People take off the exhausts of their oilheads to clean them. They invariably ring off the bolts holding them to the cylinder heads.
Result: Massive work which would have been avoided if they had left the things alone.
We have all been there. It's just that I am older and wiser now.
However, it is great to buy a bike or car off someone who has been so foolish.
Fabulous, mollycoddled to the last, and you pay almost nothing extra for such a magnificent example over something that has been maintained the way I do.
Mind you, if I do buy, it soon ends up just the way my present bike & car are!
Myke