Dear Bob, David, Tony and interested Listers,
Please accept my apology
for having misinformed you all.
Firstly I looked up the Daimler DB18 and found the following:
The Daimler DB18 (1939 - 1950) did indeed have a worm geared rear axle
4.375:1 ratio.
The Daimler Consort (1949 - 1953) had a (Hypoid) Spiral bevel geared
rear axle 4.300:1 ratio.
I once rescued a Daimler Consort which had a spiral bevel rear axle,
which is how I made the mistake.
The Consort was an upgrade of the DB18 and I had not realised that the
axle type had been changed in the revamp.
Secondly, I wrote to Penrite oils and received the following (very
helpful) reply from their Technical Manager.
Shelsley Light is a low additive 20W-60 multigrade oil designed to
be used where SAE 30 oils were recommended.
(Medium is for use where SAE 40 was used).
Gear Box Oil 30 is also a low additive product designed for use in
vintage/veteran gear boxes where SAE 30 engine oils were recommended.
It is not a conventional gear oil by any means and contains none of the
additives you normally find in gear oils.
Mild EP means a lower additive of typical EP additive than typical
hypoid oils (so that copper alloy components are not impacted) rather
than being related to it’s viscosity rating. It is a SAE 110/140 as
it’s viscosity is right on the border of where these two viscosity
grades cross. However, the type of additive we now use in this product
allows for the fact that the oil is at the low end of that range so that
wear protection is not compromised in any way.
As such, we are quite comfortable with the accuracy and
applicability of our recommendations and these are typical of the
recommendations we have made for old cars for many, many years.
Hope this helps, regards, Tony Lawton.
The names that Penrite have given to their oils do not properly
compare to the names of the original specification oils (hence the
confusion) but it would appear that the oils recommended and supplied by
Penrite ARE suitable for purpose and MIGHT even be better than the
original oils.
Best wishes from Adrian.
---------------- ************ ----------------
Adrian H. Hanwell.
---------------- ************ ---------------------Original Message-----
From: David Hallam @ home on Ubuntu [zzdhalla@ozemail.com.au]
Sent: 27 May 2008 11:46
To: daimlan@jag-lovers.org
Cc: Hanwell, Adrian (A.H.)
Subject: Fluids for fluid flywheel and gearbox (DB18)
Strange mine had a worm
David Hallam in Queanbeyan Australia
-----Original Message-----
From: Hanwell, Adrian (A.H.)
Sent: 27 May 2008 11:24
To: ‘daimlan@jag-lovers.org’
Subject: Fluids for fluid flywheel and gearbox (DB18)
Dear Tony and interested “Listers”,
The DB18 was manufactured long
after WORM drives stopped being used.
The gearing is spiral bevel, so EP (Extreme Pressure) oil must be used.
Regards, Adrian.
-----Original Message-----
From: owner-daimlan@jag-lovers.org [owner-daimlan@jag-lovers.org] On
Behalf Of Tony Paterson
Sent: 27 May 2008 11:20
To: daimlan@jag-lovers.org
Subject: Fluids for fluid flywheel and gearbox (DB18)
Listers,
My understanding is that the worn drive in the differential is
made of phosphor bronze and requires a ‘steam piston’ oil such as
Penrite Transoil 250. The wrong oil will result in very severe wear.
Tony Paterson
Tony Paterson Australian Bushcraft library <www.ausbushcraft.com.au>
-----Original Message-----
From: Hanwell, Adrian (A.H.)
Sent: 27 May 2008 10:49
To: ‘daimlan@jag-lovers.org’
Subject: Fluids for fluid flywheel and gearbox (DB18)
Dear David,
No Daimler fluid flywheels use GEAR oil. SAE 30 is an
engine oil without additives.
The “GEAR OIL 30” is a WRONG recommendation. SAE 30 is correct.
I don’t know the recommendation for torque converters on automatic
Daimlers, but this MIGHT be a transmission fluid.
“MILD EP GEAR OIL” for the rear axle sounds suspicious too.
I would guess that “MILD” means “low viscosity” and low viscosity is not
correct.
I do not know what “SHELSLEY MEDIUM” is.
Regards, Adrian.
-----Original Message-----
From: owner-daimlan@jag-lovers.org On Behalf Of David Hallam
Sent: 27 May 2008 11:07
To: daimlan@jag-lovers.org
Cc: David Hallam
Subject: Fluids for fluid flywheel and gearbox (DB18)
Adrian
I know their recommendations are well researched.
Check with them as to why before you say they are “wrong”.
Some of it may be in the language. We do use it differently from the UK
and US. 
/dlh.
David Hallam
-----Original Message-----
From: owner-daimlan@jag-lovers.org On Behalf Of David Hallam
Sent: 27 May 2008 10:00
To: daimlan@jag-lovers.org
Cc: David Hallam
Subject: Fluids for fluid flywheel and gearbox (DB18)
See
http://www.penrite.com.au/html/s02_article/article_view.asp?art_id=390&n
av_cat_id=163&nav_top_id=61
Go to pre 1970 light trucks and car
Pick daimler
pick db18
and get
Recommendation for: DAIMLER (GB) DOUBLE SIX, 4L, DB18, DE27, DE36, 24HP
(1936-1953)
Engine SHELSLEY MEDIUM
Gearbox GEAR OIL 30
Automatic
Rear axle MILD EP GEAR OIL
Notes
v2 FLUID FLYWHEEL USE GEAR OIL 30
Should you require any further advice, recommendation or information
that relates to your enquiry please call us on 61 (03) 9801 0877 or
email us at penrite@penrite.com.au
You can get it in the us and UK too.
/dlh.
David Hallam
– 1144, 1145, 3164, 1240 looking for a 142!?! or a bigger yard
Queanbeyan Australia – This is ‘Mac & Linux Country’ On a quiet night,
you can hear WINDOZE! systems rebooting!!!.. zzdhalla@ozemail.com.au
-----Original Message-----
From: Hanwell, Adrian (A.H.)
Sent: 27 May 2008 08:34
To: ‘daimlan@jag-lovers.org’
Subject: Fluids for fluid flywheel and gearbox (DB18)
Dear Bob and interested Listers,
I imagine that the oils used in the
Daimler DB18 are the same as the oils used in the Lanchester L.D.10.
which was mechanically very similar and was designed around the same
time. If so, the list is as follows:-
Oils used in the Lanchester L.D.10.
Engine: Straight SAE 30 oil (Modern 20/50 may be
better).
Fluid flywheel: Straight SAE 30 oil (Modern 20/50 without
additives would do).
Gearbox: Straight SAE 30 oil (Not gear oil,
surprisingly enough).
Rear axle: Extreme pressure EP 140 oil.
Steering box: Extreme pressure EP 140 oil.
Swivel pins: Waterproof grease, such as NLG1 (Available from a
boat Chandlers).
Steering linkages: Waterproof grease, such as NLG1.
Handbrake pivots: Waterproof grease, such as NLG1.
Prop shaft: Hardy Spicer propeller shaft grease.
The single line near the bottom of the dipstick is the Max Level
mark.
The bottom end of the dipstick is the minimum level mark.
SAE 30 oil may easily be found at an agricultural garage. It is
commonly used in tractors.
Regards, Adrian.
---------------- ************ ----------------
Adrian H. Hanwell.
---------------- ************ ----------------
-----Original Message-----
From: owner-daimlan@jag-lovers.org On Behalf Of Bob Frisby
Sent: 25 May 2008 20:18
To: daimlan@jag-lovers.org
Subject: fluids for clutch and gearbox (DB18)
I am looking at all fluid levels, trying to get my ‘‘new’’ 1952 DB18
Empress functional.
The fluid clutch is a tad low. What currently - available (hopefully in
the U.S.) oil should I be using for this?
What is a good oil for the preselector gearbox?
Also, I’m not sure how to read the gearbox dipstick. There are five
through-holes near the top, and a groove around the stick near the
bottom. Which mark should I be looking at? –
Bob Frisby, S2 FHC Boise ID, United States
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