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Oil in quarts

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VE3LVO(at)rac.ca
Guest

Posted: Fri Jun 02, 2006 4:37 am Post subject: Oil in quarts

"Bob - The Rotax manual says 3 liters.  3 quarts is close enough which

on a normal oil change (not draining the cooler) but draining the

crankcase will put the oil level roughly mid-way between the min-max

lines on the dipstick. This being the case it appears that 3 liters

would put it right at the max line.          Thom in Buffalo"



Hey, team,

            The niceties of language need reviewing here as we are from 

different corners of the globe. The U.S. decided to change the size (in 

volume) of the 'Imperial' quart, and so they have the U.S. quart which is 

smaller. It IS about the size of the litre (of which they have changed only 

the spelling).

            So it behooves us victims to consider the results of a 

international mail system when sending technical data. Thus wheels may be 

either tri- or mono-, quantities suitably spec'd and wing builds either foam 

or whatever.

Otherwise we are going to get keen builders trying to stuff big quarts into 

little pipes.......?

Cheers,

Ferg Kyle

Europa A064 914 Classic

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Thom Riddle

Joined: 10 Jan 2006
Posts: 1597
Location: Buffalo, NY, USA (9G0)

Posted: Sat Jun 03, 2006 4:20 am Post subject: Oil in quarts

Ferg,



You are correct. For the sake of accuracy, I was indeed referring to 

the US Quart. The conversion ratio is



1 Liter 	=	1.057 US Quart	=	0.880 Imperial Quart



Too bad the UK and the US don't convert all measurements to the world 

standard metric system; it would reduce confusion and miscommunication. 

I am a retired engineer who was fortunate to have worked for 1/2 year 

in Mexico and a full year in The Netherlands and acclimated to the 

metric system quickly.



The only thing about the Imperial system I like better than either the 

metric or US system is when beer is served in pints ,



Cheers,

Thom in Buffalo

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_________________
Thom Riddle
Buffalo, NY (9G0)

Don't worry about old age... it doesn't last very long.
- Anonymous

rparigor(at)suffolk.lib.n
Guest

Posted: Sat Jun 03, 2006 4:35 am Post subject: Oil in quarts

Hey guys



Figured I would make a note slight off topic.



A while back Rotax changed the length of the oil dipstick:



SB-914-026UL  Introduction Of A New Oil Dipstick For Rotax Engine Type 912

& 914 (Series)  4/2003  10  

 The characteristics of some modern motor oils can result in slower return

of oil to the oil tank. This can cause the oil tank level to fall below

the minimum level. To correct this problem a new oil dipstick with new

level marks has been introduced. 



Kinda important is to not follow the manual on how to prime (vent) the oil

system. If you open the system (take out bottom plug) or turn prop

backward, I think more than 1 turn (it may be 3/4?) or open the system in

any other way follow below



SB-914-022UL  Inspection for Correct Venting Of The Oil System For Rotax

912 & 914 Rev. 1  8/2002  11  

 It has been established that damage of the engine valve train on the

ROTAX® 912/914 series engines may be possible due to incorrect venting of

the lubrication system. 



Go to :

http://www.rotax-owner.com/index.htm

click service documentation tab on top

click by engine model

drop down and choose your motor

choose all document types



Be prepared to spend some time going through if you already did not.



Ron P.

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Thom Riddle

Joined: 10 Jan 2006
Posts: 1597
Location: Buffalo, NY, USA (9G0)

Posted: Sun Jun 04, 2006 3:01 am Post subject: Oil in quarts

Ron P.



You are not off topic in my opinion and you are correct. This SB and 

the SB-912-036 (for 912) specifically warn of incorrect venting if 

draining the oil from the oil cooler or allowing oil to drain from the 

suction side of the oil pump, or turning the prop backwards a full 

turn, thus drawing air backwards into the oil pump. This is why it is 

customary not to drain the oil cooler at every oil and filter change. 

It can be done but correct venting instructions afterwards must be 

followed.



Correct oil change procedure is in SB-912-010 and SB-914-011.



Please note that draining the crankcase via the magnetic drain plug is 

not included in the warning and "do not do" list in this bulletin.



Thom in Buffalo

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_________________
Thom Riddle
Buffalo, NY (9G0)

Don't worry about old age... it doesn't last very long.
- Anonymous

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