ATF

[Kickaha]

black &tan is the way to go

As a friend of mine once said (which got him kicked out of the pub)"I'd rather drink road tar"

[berger]

yeah i  would fosters is weasel ***, or do you mean , the good for you guinness

[RoyC]

yeah i  would fosters is weasel ***, or do you mean , the good for you guinness

If it's good enough for crocodile dundee.   

Any way, we will be chastised for being off topic soon. 

[Greybeard]

No one has yet answered the original question!

[RoyC]

No one has yet answered the original question!

I used F type ATF until I fitted a SRM clutch. SRM say, DON'T USE ATF.
so I now used Castrol 20-50.

Edit.  What we used to do with our American automatics was  -
        For a positive gear change use F.
        Foe a more gentle gear change use Dexron.
        Dexron allows slippage, where as F don't.

[RogerSB]

Well spotted GB - it's called politics

Last summer I put 8 fl oz of Halfords ATF  in mine and it was ok without any noticeable problems . . . .

Then I changed it in November (just for the winter months) for Castrol GTX High Mileage SAE 15-40 because I had a full 5L of it . . . .
Then I changed it again in February for Morris Golden Film 20W/50 after changing from original 6-spring clutch to SRM 4-spring . . . .
Then again in May for Morris Suspension 20 WT because I read somewhere that it's ideal for the primary chaincase because of its anti-foaming poperties . . . .
Then at the beginning of June I noticed a slight  weep from the drain plug (on my non-leaking-oil GF) so fitted new washers and then went back to Morris Golden Film 20W/50 again . . . .

I've not noticed any difference in any of them on the performance of the clutch .

(Edit): As Roy has said with the SRM clutch kit the instruction specifically advises against ATF.

[RoyC]

Then at the beginning of June I noticed a slight  weep from the drain plug (on my non-leaking-oil GF) so fitted new washers and then went back to Morris Golden Film 20W/50 again . . . .

I've not noticed any difference in any of them on the performance of the clutch .

(Edit): As Roy has said with the SRM clutch kit the instruction specifically advises against ATF.

Funny you should say that Roger.
I could never stop a slight leak with ATF, since changing to Castrol 20/50 it's as dry as a bone.

[Greybeard]

Last summer I put 8 fl oz of Halfords ATF  in mine and it was ok without any noticeable problems . . . .

I bought a bottle of Halford's generic 'Automatic Transmission and Power Steering Fluid DIII'. Recommended for applications requiring Dexron® III.
http://www.halfords.com/motoring/engine-oils-fluids/gearbox-oil/halfords-automatic-transmission-power-steering-fluid-diii-1l

Does anybody have anything to say about using that stuff?

[RogerSB]

since changing to Castrol 20/50 it's as dry as a bone.

The BSA Instruction Manual and other books on BSA Twins all say use seasonal engine oil in the primary chaincase.

[RogerSB]

I bought a bottle of Halford's generic 'Automatic Transmission and Power Steering Fluid DIII'. Recommended for applications requiring Dexron® III.
http://www.halfords.com/motoring/engine-oils-fluids/gearbox-oil/halfords-automatic-transmission-power-steering-fluid-diii-1l

Does anybody have anything to say about using that stuff?

Just checked and that's exactly the Halfords ATF I used, but that was when I still had a 6-spring - which itself wasn't exactly perfect - but the ATF wasn't the problem.

Without wishing to go off topic this might amuse: To hopefully make that clutch work better I decided to alter the position of the chainwheel bearing very slightly. To refit I put the bearing in the freezer, chainwheel in the oven.  While waiting decided to go back in garage to do a 'quick little' job - that took the usual long time and I forgot about the chainwheel in the oven. I had to take it out of the oven with oven gloves and open all the windows. The heat must have distorted it because on assembly the plates kept jamming = new SRM clutch.

[RoyC]

Last summer I put 8 fl oz of Halfords ATF  in mine and it was ok without any noticeable problems . . . .

I bought a bottle of Halford's generic 'Automatic Transmission and Power Steering Fluid DIII'. Recommended for applications requiring Dexron® III.
http://www.halfords.com/motoring/engine-oils-fluids/gearbox-oil/halfords-automatic-transmission-power-steering-fluid-diii-1l

Does anybody have anything to say about using that stuff?

It always used to be Dexron for GM trany's and F for Ford Trany's.
If you wanted to have fast positive changes that went in with a jolt, use F.
For that wonderful GM feeling, a lazy smooth gear change use Dexron.

If you insist on using ATF, there is less chance of slipping with F. than with Dexron.

[berger]

roger did you cook the corks that bearing slips on easily if you mean the twin ball race, my 6 spring is brilliant.i re corked the wheel years ago and use those surflex plain and modern bonded friction plates

[duTch]

 

.No one has yet answered the original question..

 Whatdya call this  ;

 

.. Something I know little about, but the question was asked a couple of years ago and if I recall the answers were varied then, but I think the consensus *may* have been 'F' type.....

 last lot I bought is Penrite Multi-Vehicle DX-111, but as I have some hydraulic oil to use up, I've also been using that; I think it's a ISO 30

 The answers will be many and varied (like all oil threads) and they all still leak   

 edited ..

       

 I fail to see how 'F' or 'GM' in the primary will affect the gear changes- smoother or harsher   

[RoyC]

I fail to see how 'F' or 'GM' in the primary will affect the gear changes- smoother or harsher   

It won't on a BSA clutch.
I was just pointing out the different effects that we used to get when I was into American auto tuning in the 70s and 80s.
If there was less slip with F then, there will be less chance of slip on a BSA clutch now.
Because SRM say that ATF will make their clutches slip. There will be less chance with F than with Dexron.
The only reason for having any fluid in the primary is to lubricate the chain, so why not use the proper oil ?

[Greybeard]

The only reason for having any fluid in the primary is to lubricate the chain, so why not use the proper oil ?

Leak detection