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I've given some thought to the "manufacturer's recommendations." I seriousl=
y doubt--but have no proof--that the manufacturers of engines, gearboxes an=
d differentials test all feasible brands and grades for suitability. They p=
robably have a policy--based on experience and maybe a cross-marketing agre=
ement (e.g. Castrol pays or otherwise encourages Jaguar to recommend their =
oils; just a theoretical example, no proof)--to recommend fluids they have =
been using with no adverse effects. For example, Tremec's recommendations f=
or their manual transmissions differ from Ford's (Ford recommends their ATF=
--big surprise). I doubt Ford tested all available ATFs and came up with pr=
oof theirs was the best, but they tried Mercon and it seemed to work fine a=
nd, oh, why not recommend your company's products?=20
One thing, for engine oil in particular, is to use the recommended viscosit=
y. The owner's manual recommended Motorcraft 5W-20 Semi-Synthetic; I had a =
bunch of 10W-30 on the shelf and briefly thought "Well, if 5W-20 is OK 10W-=
30 should be too--after all the numbers are bigger and bigger is better, ri=
ght?" Fortunately, I stuck with the 5W-20 and later came to find that the M=
odular engines have plastic, oil pressure-driven timing chain tensioners, a=
nd if you use a thicker oil the tensioners won't, well, tension as quickly =
at startup and the flopping about of the timing chains can break the tensio=
ner rails.=20
Bob=20
----- Original Message -----
From: josef-eckert@t-online.de=20
To: "Chris Dimmock" <austin.healey@gmail.com>=20
Cc: "healeys" <healeys@autox.team.net>=20
Sent: Monday, October 31, 2016 10:13:46 AM=20
Subject: Re: [Healeys] Differential oil=20
Chris,=20
Yes, when the Owners Manual names a recommended type of oil I use it when I=
still can get it, as this is what they used at the factory and they knew w=
hy they recommended it. Castrol or Penrite or Millers or even others still =
produce the right spec.mineral oil.=20
And these recommended oils kept my classic cars running for 50years plus. S=
o why shall I use different and perhaps ruin my gearbox, engine or rear axl=
e?=20
Sorry I still can=C2=B4t believe modern synthetic oils are tested in Austin=
-Healey engines, gearboxes and rear axles and are formulated to keep modern=
engines/gearboxes/axles/etc. of a much different design running.=20
For me:=20
No synthetic oils in my classic cars!=20
I like to have crossplies fitted to my classic cars of the 50/60s, but that=
=C2=B4s my personal taste as for me it gives a period driving experience I =
like.=20
I can=C2=B4t get the original paint anymore, so I use modern paint matching=
the original colour and appearance.=20
Sorry I do not fill in 50 year old air in the tyres (hard to get) and I hav=
e 2bars front and 2bars rear filled in.=20
And yes, I drive my Austin-Healeys, but not daily, as we also have modern c=
ars here to drive in daily madness. Much more confortable by the way and be=
tter suitable to my daily business.=20
Josef Eckert=20
Konigswinter/Germany=20
54BN1=20
62BT7=20
65Sprite=20
59 DaimlerSP250=20
50 Morris Minor Tourer=20
78 Mercedes 240D=20
and our modern Donkeys for daily business=20
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<html><body><div style=3D"font-family: Arial; font-size: 12pt; color: #0000=
00"><div>I've given some thought to the "manufacturer's recommendations." &=
nbsp;I seriously doubt--but have no proof--that the manufacturers of engine=
s, gearboxes and differentials test all feasible brands and grades for suit=
ability. They probably have a policy--based on experience and maybe a=
cross-marketing agreement (e.g. Castrol pays or otherwise encourages Jagua=
r to recommend their oils; just a theoretical example, no proof)--to recomm=
end fluids they have been using with no adverse effects. For example,=
Tremec's recommendations for their manual transmissions differ from Ford's=
(Ford recommends their ATF--big surprise). I doubt Ford tested all a=
vailable ATFs and came up with proof theirs was the best, but they tried Me=
rcon and it seemed to work fine and, oh, why not recommend your company's p=
roducts?</div><div><br></div><div>One thing, for engine oil in particular, =
is to use the recommended viscosity. The owner's manual recomme=
nded Motorcraft 5W-20 Semi-Synthetic; I had a bunch of 10W-30 on the shelf =
and briefly thought "Well, if 5W-20 is OK 10W-30 should be too--after all t=
he numbers are bigger and bigger is better, right?" Fortunately, I s=
tuck with the 5W-20 and later came to find that the Modular engines have pl=
astic, oil pressure-driven timing chain tensioners, and if you use a thicke=
r oil the tensioners won't, well, tension as quickly at startup and the flo=
pping about of the timing chains can break the tensioner rails.</div><div><=
br></div><div>Bob</div><div><br></div><div><br></div><div><br></div><hr id=
=3D"zwchr"><div style=3D"color:#000;font-weight:normal;font-style:normal;te=
xt-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;">=
<b>From: </b>josef-eckert@t-online.de<br><b>To: </b>"Chris Dimmock" <aus=
tin.healey@gmail.com><br><b>Cc: </b>"healeys" <healeys@autox.team.net=
><br><b>Sent: </b>Monday, October 31, 2016 10:13:46 AM<br><b>Subject: </=
b>Re: [Healeys] Differential oil<br><div><br></div><title></title><p style=
=3D"margin: 0px;"><span style=3D"font-family: arial,helvetica,sans-serif; f=
ont-size: 10pt; color: #000000; text-decoration: none;">Chris,<br></span></=
p>
<p style=3D"margin: 0px;"><span style=3D"font-family: arial,helvetica,sans-=
serif; font-size: 10pt; color: #000000; text-decoration: none;">Yes, when t=
he Owners Manual names a recommended type of oil I use it when I still can =
get it, as this is what they used at the factory and they knew why they rec=
ommended it. Castrol or Penrite or Millers or even others still produce the=
right spec.mineral oil. </span></p>
<p style=3D"margin: 0px;"><span style=3D"font-family: arial,helvetica,sans-=
serif; font-size: 10pt; color: #000000; text-decoration: none;">And these r=
ecommended oils kept my classic cars running for 50years plus. So why shall=
I use different and perhaps ruin my gearbox, engine or rear axle?</span></=
p>
<p style=3D"margin: 0px;"><span style=3D"font-family: arial,helvetica,sans-=
serif; font-size: 10pt; color: #000000; text-decoration: none;">Sorry I sti=
ll can=C2=B4t believe modern synthetic oils are tested in Austin-Healey eng=
ines, gearboxes and rear axles and are formulated to keep modern engines/ge=
arboxes/axles/etc. of a much different design running.</span></p>
<p style=3D"margin: 0px;"> </p>
<p style=3D"margin: 0px;"><span style=3D"font-family: arial,helvetica,sans-=
serif; font-size: 10pt; color: #000000; text-decoration: none;">For me:</sp=
an></p>
<p style=3D"margin: 0px;"> </p>
<p style=3D"margin: 0px;"><span style=3D"font-family: arial,helvetica,sans-=
serif; font-size: 10pt; color: #000000; text-decoration: none;">No syntheti=
c oils in my classic cars!</span></p>
<p style=3D"margin: 0px;"> </p>
<p style=3D"margin: 0px;"><span style=3D"font-family: arial,helvetica,sans-=
serif; font-size: 10pt; color: #000000; text-decoration: none;">I like to h=
ave crossplies fitted to my classic cars of the 50/60s, but that=C2=B4s my =
personal taste as for me it gives a period driving experience I like.</span=
></p>
<p style=3D"margin: 0px;"> </p>
<p style=3D"margin: 0px;"><span style=3D"font-family: arial,helvetica,sans-=
serif; font-size: 10pt; color: #000000; text-decoration: none;">I can=
=C2=B4t get the original paint anymore, so I use modern paint matching the =
original colour and appearance.<br></span></p>
<p style=3D"margin: 0px;"> </p>
<p style=3D"margin: 0px;"><span style=3D"font-family: arial,helvetica,sans-=
serif; font-size: 10pt; color: #000000; text-decoration: none;">Sorry I do =
not fill in 50 year old air in the tyres (hard to get) and I have 2bars fro=
nt and 2bars rear filled in.</span></p>
<p style=3D"margin: 0px;"> </p>
<p style=3D"margin: 0px;"><span style=3D"font-family: arial,helvetica,sans-=
serif; font-size: 10pt; color: #000000; text-decoration: none;">And yes, I =
drive my Austin-Healeys, but not daily, as we also have modern cars here to=
drive in daily madness. Much more confortable by the way and better suitab=
le to my daily business. </span></p>
<p style=3D"margin: 0px;"> </p>
<p style=3D"margin: 0px;"><span style=3D"font-family: arial,helvetica,sans-=
serif; font-size: 10pt; color: #000000; text-decoration: none;">Josef Ecker=
t</span></p>
<p style=3D"margin: 0px;"><span style=3D"font-family: arial,helvetica,sans-=
serif; font-size: 10pt; color: #000000; text-decoration: none;">Konigswinte=
r/Germany</span></p>
<p style=3D"margin: 0px;"> </p>
<p style=3D"margin: 0px;"><span style=3D"font-family: arial,helvetica,sans-=
serif; font-size: 10pt; color: #000000; text-decoration: none;">54BN1</span=
></p>
<p style=3D"margin: 0px;"><span style=3D"font-family: arial,helvetica,sans-=
serif; font-size: 10pt; color: #000000; text-decoration: none;">62BT7</span=
></p>
<p style=3D"margin: 0px;"><span style=3D"font-family: arial,helvetica,sans-=
serif; font-size: 10pt; color: #000000; text-decoration: none;">65Sprite</s=
pan></p>
<p style=3D"margin: 0px;"><span style=3D"font-family: arial,helvetica,sans-=
serif; font-size: 10pt; color: #000000; text-decoration: none;">59 DaimlerS=
P250</span></p>
<p style=3D"margin: 0px;"><span style=3D"font-family: arial,helvetica,sans-=
serif; font-size: 10pt; color: #000000; text-decoration: none;">50 Morris M=
inor Tourer</span></p>
<p style=3D"margin: 0px;"><span style=3D"font-family: arial,helvetica,sans-=
serif; font-size: 10pt; color: #000000; text-decoration: none;">78 Mercedes=
240D</span></p>
<p style=3D"margin: 0px;"><span style=3D"font-family: arial,helvetica,sans-=
serif; font-size: 10pt; color: #000000; text-decoration: none;">and our mod=
ern Donkeys for daily business</span></p>
<p style=3D"margin: 0px;"></p><div><br></div></div><div><br></div></div></b=
ody></html>
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