I was just changing my final drive and transmission oil on a 2010 r1200rt. The deal sold me 2 quarts. One of synthetic 75w90 and that had the 2 sealing washers for the transmission taped to it. I used this in my transmission oil change. The oil is 80W90 Hypoid Gear oil. I was going to use that for the final drive. Did I do this backwards?
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Opps, Did I use the wrong oil? '10 R1200RT
- Thread starter chadman
- Start date
roborider
God? What god?
The 75-90 should be the final drive. I use 75-140 in the transmission, but I know some use a different weight. So I say you got them reversed. You can drain and collect the oil from the transmission and use it still in the final drive. There isn't anything wrong with that as long as you keep it clean.
gr8ridn2
Tourmeister
The 75-90 synthetic you put into the gearbox is the correct oil for that part. The 80-90 hypoid would work for the rear drive but I would recommend trading it for another quart of 75-90 synthetic hypoid oil which is the specified oil. I know that stuff is really expensive, but one qt will supply the rear drive with 5 changes so the per change cost isn't bad.
I would never drain oil and reuse it. Too many chances to contaminate the product, not worth the risk IMHO.
I would never drain oil and reuse it. Too many chances to contaminate the product, not worth the risk IMHO.
Yep, I think I'm fine. I'll just keep what I have in the trans and use the other stuff for the final drive. I found it funny that the service DVD recommends some castrol oil for both the trans and final drive. No one around me even sells that castrol oil the mentioned. Thanks for the help.
gr8ridn2
Tourmeister
Yep, the Castrol SAF-XO hasn't been availible in North America. BMWNA has officially listed their 75-90 Synthetic Gear Oil as the substitute. That oil is for both the Gearbox and Rear Drive.
marcopolo
Active member
Not quite right. The Castrol SAF-XO (for the final drive), has been available in litre bottles from BMW bike dealers here in Canada right from the get go.
deilenberger
A bozo on the bus
Chadman, Please see: http://forums.bmwmoa.org/showthread.php?t=46055 I've added the info.
roborider
God? What god?
When you say contaminate, I'm sure you mean particulates. Particulates will come from dirty collection and measuring containers. The transmission will not contaminate the oil (if it does, there's a problem with that tranny!). When you fill the final drive, you measure about 200 ml of oil ( I use a clean ratio-rite measuring device). I then transfer that to a bottle and put it in the final drive. Oil from a fresh bottle would get contaminated if the measuring and transfer method are not clean. If you clean up the drain area of the trans well, you can collect the oil right into the ratio rite and then proceed. The oil is clean.
The fear of adding contaminates to drained oil is just a myth. It goes in clean, it comes out clean (if the drain area is cleaned). It's no big deal. If you were REALLY worried, about dirt or something, you could run it through a cheese cloth. But that really is overkill. People freak out over oil.
I thought it was 180ml. Is it 299?
roborider
God? What god?
A refill is 180 ml. I find that when I measure 200ml in a graduated cylinder (I said ratio rite, but actually I now use a graduated cylinder), then transfer that to a squirt bottle (similar to the procedure in the tech forum), I get about 20 mls carryover loss. That is, if I invert the transfer bottle into the cylinder, the next day there is about 20 ml in the cylinder. That is why I measure 200 ml, knowing I get about 180.
A completely fresh fill is 250 ml. BMW I think assumed about 30 ml stay in the drive when drained, and so you used to fill with 220 ml new oil. Then, BMW I guess thought this was causing pressure build up and blowing out seals. So they reduced it from 250 to 210, and 220 to 180ml. I may have some of those numbers inaccurate, but close enough for discussion! Point is, you want a full 180 ml in that drive. If you have carryover loss, account for it. Some use a syringe and have very little carryover loss. Whatever method you choose, get 180 into the drive.
One last point. This 180 ml assumes a normal drain. Say 5 minutes or so. BMW assumes that some oil stays in the drive, on the gears and housing. Those who drain the drive overnight will drain out a lot more oil than a 'regular' quick drain and should add more. I always measure what comes out, and 5 minutes gives me pretty close to 180 ml of drain.
Don't forget to clean the metal sludge off the magnetic plug.
I'm assuming you are reading the "HOW TOs" in our Tech Forum here.
A completely fresh fill is 250 ml. BMW I think assumed about 30 ml stay in the drive when drained, and so you used to fill with 220 ml new oil. Then, BMW I guess thought this was causing pressure build up and blowing out seals. So they reduced it from 250 to 210, and 220 to 180ml. I may have some of those numbers inaccurate, but close enough for discussion! Point is, you want a full 180 ml in that drive. If you have carryover loss, account for it. Some use a syringe and have very little carryover loss. Whatever method you choose, get 180 into the drive.
One last point. This 180 ml assumes a normal drain. Say 5 minutes or so. BMW assumes that some oil stays in the drive, on the gears and housing. Those who drain the drive overnight will drain out a lot more oil than a 'regular' quick drain and should add more. I always measure what comes out, and 5 minutes gives me pretty close to 180 ml of drain.
Don't forget to clean the metal sludge off the magnetic plug.
I'm assuming you are reading the "HOW TOs" in our Tech Forum here.
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