Lister Blackstone 2:1 Box

[badgerbag]

Hi,

Does anyone know the oil capacity of the L-B 2:1  reduction box? I need to change the oil, and want to make sure I have enough before starting the job. I can’t find anything in the manual or online. 
 

Also, is it better to avoid hypoid gear oil in these boxes? I know there has been discussion on the forum before on this topic but I’m not sure of the final verdict. It had certainly had EP oil in it in the past, there is a half empty bottle on board to prove it. 
 

Many thanks 

Tim

[monkeyhanger]

What engine is it attached to, please? I suspect that there are many variations of a Blackstone 2:1 box.

 

Edited September 9, 2021 by monkeyhanger
missed word

[badgerbag]

Hi, it’s on a Lister FR2 

[MoominPapa]

Don't know the exact capacity, but not much. A litre is probably enough for at least two fills.

 

MP.

 

[David Mack]

30 minutes ago, MoominPapa said:

Don't know the exact capacity, but not much. A litre is probably enough for at least two fills.

 

MP.

 

Indeed. Most of the space inside is filled with two gears. There isn't a lot of room for oil!

[badgerbag]

Thanks, I’ll take it steady refilling.

[roland elsdon]

Mine leaks like a sieve but 200mls of oil every 2 weeks boating is normally enough to go between the marks

[badgerbag]

Thanks, any preference for oil, or whatever is hanging about? 

[monkeyhanger]

25 minutes ago, badgerbag said:

Thanks, any preference for oil, or whatever is hanging about? 

EP80 or EP90 should be ok

 

[roland elsdon]

I’ve had 3 of these boxes on different boats over 35 years and have never killed one yet using ep80/90. The current one leaked when I got the boat and still does. Low level is the killer I think, as it destroys the bearings.

[badgerbag]

Thanks very much everyone. A little job for next week.