Print Page - A10 primary case oil.

Title: A10 primary case oil.
Post by: fenderman! on 27 Sep, 2021, 19:06

I have 1955 Road Rocket..the manual calls for 20 weight oil in the primary case..It is hard to find but I can find 20 weight fork oil..would that be ok or is there a suitable oil..30 weight?

Title: Re: A10 primary case oil.
Post by: DAVE BRADY on 27 Sep, 2021, 19:35

Hi,

For many years and many thousands of miles in an '59 A10 combo, '51 A10 and two A65s I have used mineral ATF. Lubricates everything well but does not affect the clutch friction plates. Also because it is a redish colour it helps to identify where and drip are coming from.

Dave.

Title: Re: A10 primary case oil.
Post by: idie on 27 Sep, 2021, 22:53

I have been using 10 or 15 weight fork oil in the primary chaincase for some years now.

Title: Re: A10 primary case oil.
Post by: Pete A10 on 28 Sep, 2021, 09:14

20 SAE oil is available on line. Lubron oils from an outfit called Alexoils.

Title: Re: A10 primary case oil.
Post by: Dean Southall on 28 Sep, 2021, 13:29

Before using fork oil in ther clutch I'd check fork oil doesn't have any additives that will conflict with clutch funtion.

I have used ATF for donkeys years.

Title: Re: A10 primary case oil.
Post by: bikerbob on 28 Sep, 2021, 15:44

I have been using Silkolene 20 fork oil in my bikes for over 20 years now without any problems.

BSA Owners' Club Workshop Discussions

The BSA Workshop => Twins => Topic started by: fenderman! on 27 Sep, 2021, 19:06