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Differential Oil

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sp250boy
Posts: 305
Joined: Sat Jul 09, 2016 7:29 pm
Location: Llanybydder Wales

Differential Oil

Post by sp250boy »

Guys,
Sorry for not being a more interesting post..

What is the oil I should use for the differential, on my 1939 Lanchester La11

Many thanks
It is a Lanchester

Norfolk Lad
Wise Man
Wise Man
Posts: 713
Joined: Wed Feb 10, 2016 8:23 pm

Re: Differential Oil

Post by Norfolk Lad »

The oil is shown here as SAE140 http://forum.dloc.co.uk/viewtopic.php?f ... oil#p22951
it has to be this type not what you buy as your normal gear oil hypo attacks the bronze causing wear .

sp250boy
Posts: 305
Joined: Sat Jul 09, 2016 7:29 pm
Location: Llanybydder Wales

Re: Differential Oil

Post by sp250boy »

Thanks NL,
Just looking on ebay for SAE 140 and spotted this:

https://www.ebay.co.uk/itm/Classic-Gear ... xyBC1SCLmg

I like to support the little guys, so whats the opinion of this oil?

Thanks in advance
It is a Lanchester

classiclife
Classic Wise Man
Classic Wise Man
Posts: 1601
Joined: Wed Sep 05, 2018 9:55 am
Location: Ridgewood - East Sussex
Contact:

Re: Differential Oil

Post by classiclife »

GL4 type diff oil is fine, but GL5 will attack bronze and seals.

If your transmission is NON-HYPOID then you need a GL1 spec oil; Penrite Transoil 90 is a good example of GL1 as is Millers Vintage Green Gear Oil 140.

Depends on which viscosity you want to go for. Most owners with a noisy or a slightly worn diff tend to go 140.

I know Pennine Oils and have to say there is better out there - just my opinion and experience.

Regards.

Richard.
1968 Daimler V8-250 Saloon
DLOC East Sussex Branch Secretary
DLOC 2.5L V8 & V8-250 Registrar - https://www.dloc.org.uk/v8-250
DLOC 2024 International Rally - https://www.dloc.org.uk/rally-2024

JT7196
Extremely Wise Man
Extremely Wise Man
Posts: 1535
Joined: Sat Feb 13, 2016 7:22 am

Re: Differential Oil

Post by JT7196 »

Hi, I’ve actually got a mixture of SAE 140 & SAE 250 in my rear Axle, it just helpes reduce noise on the overrun .

Cheers Al 😊😊

Ps, Actually SAE 140 is specified as standard fro the Rear Axle on LA10
11 etc, etc 😊😊

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