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Chaincase oil #360652
03/01/11 4:52 am
03/01/11 4:52 am
Joined: Aug 2010
Posts: 205
Texas USA
D
DaveOfTexas Offline OP
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Texas USA
p30 of my Owners Handbook has a chart with some no-longer-available oils, I am sure, for the chaincase and the front forks.
Some are 10W30 and 10W40 engine oil.
Is that currently the accepted thinking?


1969 BSA B44VS PC8113
Engine PC8113B44VS
Recently acquired (Feb 2011) Aiming to get running and return all parts/configurations to original.
First BSA. Have 1970 Honda CB750 too.
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Re: Chaincase oil [Re: DaveOfTexas] #360660
03/01/11 5:36 am
03/01/11 5:36 am
Joined: Oct 2008
Posts: 4,941
Gnashville
DavidP Online content

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DavidP  Online Content

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Gnashville
Regular old 10W30 will be fine.
Many folks also swear by using ATF in the chain case. I'm sure they'll chime in here soon.


Stepping on others doesn't make you stand tall.

71 A65L "Zelda"
92 BMW K100rs "Gustav"
72 T120V cafe project "Mr. Jim"
Re: Chaincase oil [Re: DaveOfTexas] #360670
03/01/11 8:16 am
03/01/11 8:16 am
Joined: May 2004
Posts: 3,674
Sydney Australia
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BSA_WM20 Online content
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Sydney Australia
As you are putting am old bike which is new to you on the road I would suggen that you do as mentioned above.
Engine oil in the engine
ATF in the primary
Synthetic in the gearbox ( or if not a special gearbox oil that is a funny colour )

Logic behind this is that if they are all different colours it will make chasing down all of those oil leaks much easier.
I use Valvoline 20W40 in the engine ( Brown )
Dextron II in the primary ( Pink )
Penrite manual box oil in the box ( Blue or Purple )
In new bikes thus it is easy to work out where those annoying dribbles are coming from.
After I have been riding the bike for a while & am use to it incontenece then I go back to 20W40 every where, just to make my life easy.

The only really important thing is to change the engine oil regularly.
I knew a bloke who dropped his A65's oil every time he took it for a ride.
He kept the reasonably clean oil and used it when he did oil changes in his F 100 truck. "The truck has got better filters than the bike". He got over 80,000 miles from a wonky bottom end and it was just as good ( or bad ) when he sold it as it was when he bought it.
For your forks, get a couple of bottles of genuine fork oil as different weights of fork oil can be mixed together to get the forks just the way you like them.


Bike Beesa
Trevor
Re: Chaincase oil [Re: DaveOfTexas] #360845
03/02/11 5:13 am
03/02/11 5:13 am
Joined: Aug 2001
Posts: 4,369
Owego, NY, USA
Mark Z Offline
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Mark Z  Offline
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Posts: 4,369
Owego, NY, USA
"The only really important thing is to change the engine oil regularly."

And it's important to change the primary chaincase oil regularly as well, in order to get maximum life out of your clutch discs.

I'm also a proponent of ATF in the primary. The benefit is greatest when starting with a fresh set of discs though.


Mark Z

'65(lower)/'66(upper, wheels, front end, controls)/'67(seat, exhaust, fuel tank, headlamp)/'70(frame) A65 Bitsa.
Re: Chaincase oil [Re: DaveOfTexas] #360847
03/02/11 5:20 am
03/02/11 5:20 am
Joined: Aug 2001
Posts: 4,369
Owego, NY, USA
Mark Z Offline
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Mark Z  Offline
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Posts: 4,369
Owego, NY, USA
I should have also mentioned, the gear oil (80-90W) should be changed once or twice a year, depending on the environment in which the bike is operated and stored. The gearbox likes to collect condensation (and sometimes water if the filler plug gasket fails). You'll know this has happened if the drained oil is milky-looking.


Mark Z

'65(lower)/'66(upper, wheels, front end, controls)/'67(seat, exhaust, fuel tank, headlamp)/'70(frame) A65 Bitsa.
Re: Chaincase oil [Re: DaveOfTexas] #360853
03/02/11 6:01 am
03/02/11 6:01 am
Joined: Aug 2010
Posts: 205
Texas USA
D
DaveOfTexas Offline OP
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Texas USA
Thanks once again. I think I have settled on:
For the engine I will use 20W50
For the transmission (gearbox) I will use ATF or gear oil 80-90W
For the primary chaincase (has clutch), ATF or 10W30 eng oil.
For the front forks, 10W30 or a custom combo.

For the rear chain, graphite grease.
Gasoline; 98 octane min.

This is a beautiful machine, I can't wait to hear it run.

Last edited by DaveOfTexas; 03/02/11 6:02 am.

1969 BSA B44VS PC8113
Engine PC8113B44VS
Recently acquired (Feb 2011) Aiming to get running and return all parts/configurations to original.
First BSA. Have 1970 Honda CB750 too.
Re: Chaincase oil [Re: DaveOfTexas] #360864
03/02/11 12:09 pm
03/02/11 12:09 pm
Joined: Oct 2001
Posts: 529
Norway
Ola Offline
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Ola  Offline
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Norway
You are absolutely right Mark Z. The dip stick/breather design from late -67 accumulates rain water and drain it to the gear box.



Best regards

Last edited by Ola; 03/02/11 12:12 pm.

There are no bosses in a technical discussion
(Doug Hele, 1919 - 2001)
Re: Chaincase oil [Re: DaveOfTexas] #360882
03/02/11 4:12 pm
03/02/11 4:12 pm
Joined: Jan 2006
Posts: 3,325
Medford, Oregon
Gary E Offline
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Gary E  Offline
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Medford, Oregon
Dave,
The owners manual specifies SAE 20 oil for the forks, not "10W30 or a custom combo".


1967 BSA Wasp
1967 BSA Hornet (West Coast Model)
1967 BSA Hornet (East Coast Model)
1968 BSA Firebird Scrambler
1968 BSA Spitfire Mark IV
Re: Chaincase oil [Re: DaveOfTexas] #360932
03/02/11 9:08 pm
03/02/11 9:08 pm
Joined: Aug 2010
Posts: 205
Texas USA
D
DaveOfTexas Offline OP
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DaveOfTexas  Offline OP
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Joined: Aug 2010
Posts: 205
Texas USA
Thanks Gary I will try the SAE 20 in the forks.

Back to the gearbox, I checked with my supplier and he says the ATF and the gear oil 80-90W are vastly different in viscosity.
What to use?


1969 BSA B44VS PC8113
Engine PC8113B44VS
Recently acquired (Feb 2011) Aiming to get running and return all parts/configurations to original.
First BSA. Have 1970 Honda CB750 too.
Re: Chaincase oil [Re: DaveOfTexas] #360933
03/02/11 9:15 pm
03/02/11 9:15 pm
Joined: Aug 2010
Posts: 205
Texas USA
D
DaveOfTexas Offline OP
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Posts: 205
Texas USA
PS Gary we must have different manuals, mine says nothing about sae20 but does list 10W30 motor oil. Model differences?
Thanks.


1969 BSA B44VS PC8113
Engine PC8113B44VS
Recently acquired (Feb 2011) Aiming to get running and return all parts/configurations to original.
First BSA. Have 1970 Honda CB750 too.
Re: Chaincase oil [Re: DaveOfTexas] #360935
03/02/11 9:20 pm
03/02/11 9:20 pm
Joined: Jun 2009
Posts: 62
Texas
B
bandit Offline
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Posts: 62
Texas
Dave,

Use 80/90 wt "gear oil" in the gear box.
Try to get some synthetic as has been mentioned.....
I've found synthetic ATF for the primary works well.
Valvoline single wt racing 50wt, VR-1, is what I use in the engine, especially in the summers in TX.....! 40wt in the winter.
Believe it when these guys say to change often, cheap insurance...
Good luck.....;o)


69 Lightning
71 BMW R75/5
57 Cushman
74 MGB

So it's every hand to his rope or gun,
Quick's the word, Sharp's the Action.....
Re: Chaincase oil [Re: DaveOfTexas] #361001
03/03/11 3:34 am
03/03/11 3:34 am
Joined: Jan 2006
Posts: 3,325
Medford, Oregon
Gary E Offline
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Gary E  Offline
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Joined: Jan 2006
Posts: 3,325
Medford, Oregon
Dave,
manuals 00-4144 and 00-4171 both indicate 10W/30 and 10W/40 depending on what brand is used. manuals 00-4121, 00-4126, 00-4137, and 00-4142 all indicate 20w depending on what brand is used. All the forks have nearly the same parts. Go figure.

20W is getting harder to find unless you want to buy a gallon.


1967 BSA Wasp
1967 BSA Hornet (West Coast Model)
1967 BSA Hornet (East Coast Model)
1968 BSA Firebird Scrambler
1968 BSA Spitfire Mark IV
Re: Chaincase oil [Re: DaveOfTexas] #361133
03/03/11 10:51 pm
03/03/11 10:51 pm
Joined: Sep 2007
Posts: 1,593
Shingle Springs, California
Roadwarrior Offline

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Roadwarrior  Offline

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Posts: 1,593
Shingle Springs, California
The weight of the oil in the forks should depend on the fork reaction or stiffness you want on the ride. In the motor, make sure you are using Motorcycle oil. You need the extra ZDDP in the oil that the modern automobile oils do not have. 20/50 works great. I'd also put on a return side oil filter. MAP has them and they work great. I have one on my B44, and it keeps the oil nice and clean, and will triple the life of the motor. ATF or 20/50 motorcycle oil in the primary chain works fine as long as you don't over fill it. The oil in there is to lube the primary chain.


Bob


73 Triumph T140 Main Ride
70 Bonnie
67 BSA West Coast Hornet

56 Chevy

Who are the brain police?



Re: Chaincase oil [Re: DaveOfTexas] #361179
03/04/11 4:22 am
03/04/11 4:22 am
Joined: Aug 2001
Posts: 4,369
Owego, NY, USA
Mark Z Offline
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Mark Z  Offline
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Joined: Aug 2001
Posts: 4,369
Owego, NY, USA
Hmm, surprised no one has said this, but you should use fork oil in the forks. Fork oil has the attribute of not foaming when agitated. If the oil foams, it loses viscosity, reducing damping.

Later style forks like a lighter weight oil, and ATF is often specified (ATF also has non-foaming attribute), but ATF is too light for the earlier damper designs. Fork oil is available in any viscosity, all the way from 5W to 30W. As was pointed out above, it's a matter of how much damping feels right to you. I've settled on 15W for my '66.

No one suggested ATF in the gearbox, only the primary chaincase. ATF is way too light for the gearbox, you want 80-90W.


Mark Z

'65(lower)/'66(upper, wheels, front end, controls)/'67(seat, exhaust, fuel tank, headlamp)/'70(frame) A65 Bitsa.
Re: Chaincase oil [Re: Mark Z] #361702
03/07/11 3:31 am
03/07/11 3:31 am
Joined: Feb 2007
Posts: 2,214
Atlanta, GA USA
S
Semper Gumby Offline
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Semper Gumby  Offline
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Joined: Feb 2007
Posts: 2,214
Atlanta, GA USA
My vote:

20W50 in the motor summer 10W40 winter (unless you don't have or ride in "Winter") I have been using Spectro Golden but it is really pricy and getting hard to come by. Soooo I'm switching to the Valvolene 20W50 VR-1 Race oil in the summer and the Valvolene 10W40 motorcycle oil in the winter because they have the most zinc and I can get them at any Autozone for a reasonable price.

Gearbox - 85W140 gear summer 80W90 in the winter (I'll probably get some hell for that). Again Valvolene in the dark blue bottle. I've be using this for years in my BMW just because it "felt" better than anything else. So my choice was a subjective one. Don't use ATF in the gearbox.

Primary - 10W30 or 20W50 conventional car cheep stuff with not much zinc. Anti friction additives are bad for the clutch. ATF leaks out too fast in my bikes and I usually have a long way to go. If your Primary doesn't leak then you can use ATF. Lots of people do...I know the racebike people like it but perhaps for different reasons?

+1 on changing often plus all my BSA's have remote Harley/Norton spinon oil filters (WIX).


Last edited by Semper Gumby; 03/07/11 3:36 am.

Gaggle of BSAs
a Honda
an old BMW
and a Montesa
Parking lot Elf in training

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