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Hi Doug=2C
=20
I received several responses=3B the conventional wisdom was to remove the d=
ifferential and have a specialist carry out the work. That is on my to-do l=
ist.
=20
Until I get to that item on my list=2C here is what I have done. I drained =
the Penrite 80W 90 mineral gear oil=2C and replaced it with Penrite 140 Gea=
r Oil - Premium Mineral. This product claims "for quieting noisy differenti=
als=2C where the noise is due to wear=2C thus prolonging the life of the un=
it".=20
=20
After about 60 miles of driving=2C the whine was certainly still evident. A=
bit quieter=2C but not significantly so. Following suggestions from others=
=2C I then added Nulon G70 to the Penrite 140 Gear Oil in the differential.
=20
I have covered some 1=2C123 miles since then.=20
=20
Conclusion: The pitch level of the diff whine is lower=2C more like a hummi=
ng=3B it is now easier to live with at and above 60mph. The most improvemen=
t occurred after adding the Nulon G70. I will continue to run this combinat=
ion in the differential for now. Knowing the result=2C I would do it again.=
=20
=20
As has been pointed out by others=2C the real fix is to have the differenti=
al adjusted or repaired by a differential specialist. Hope that answers you=
r question. Regards=2C Graham Wilkie.Moruya=2C Australia.=20
=20
> From: douglas.barker@videotron.ca
> To: glwilkie1@bigpond.com=3B healeys@autox.team.net
> Subject: RE: [Healeys] SAE 140 Use In Differential To Reduce Noise?
> Date: Wed=2C 23 Dec 2015 14:02:17 -0500
>=20
> This goes way back but did anybody respond and if so what was the
> conclusion?
>=20
> -----Original Message-----
> From: healeys-bounces@autox.team.net [mailto:healeys-bounces@autox.team.n=
et]
> On Behalf Of Graham Wilkie
> Sent: Thursday=2C April 03=2C 2014 10:43 PM
> To: healeys@autox.team.net
> Subject: [Healeys] SAE 140 Use In Differential To Reduce Noise?
>=20
> Hello All=2C
>=20
> The differential on my 1966 BJ8 starts to whine once I have driven for
> several miles=2C and everything has warmed up to normal operating tempera=
ture.
> It only occurs during accelerator pedal movement down (under load). The
> whining diminishes during coasting or deceleration.
>=20
> The differential is filled with Penrite 80W 90 mineral gear oil. (Recentl=
y
> changed).
>=20
> I am considering replacing my differential gear oil with Penrite SAE 140
> mineral gear oil. (Note no 'W' prefix=3B it is straight SAE 140). This pr=
oduct
> claims it will reduce differential noise in older vehicles. I wonder if i=
t
> is suitable for our Healeys?
>=20
> I seem to recall reading on the List that our rear wheel bearings are spl=
ash
> lubricated by differential oil=2C but cannot find any reference to that i=
n my
> workshop manual. Is that correct? I'm concerned that if that is the case=
=2C
> will the SAE 140 be too viscous to splash lubricate the rear wheel bearin=
gs
> effectively?
>=20
> Would I be better of using a gear oil additive like Nulon G70 instead?
>=20
> Any shared thoughts or suggestions would be greatly appreciated.
>=20
> Thank you.
>=20
> Regards=2C Graham Wilkie.
> BJ8 Moruya NSW Australia.
> _______________________________________________
> Support Team.Net http://www.team.net/donate.html Suggested annual donatio=
n
> $12.75
> Archive: http://www.team.net/archive
> Forums: http://www.team.net/forums
>=20
> Healeys@autox.team.net
> http://autox.team.net/mailman/listinfo/healeys
>=20
> Unsubscribe/Manage:
> http://autox.team.net/mailman/options/healeys/douglas.barker@videotron.ca
>=20
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<div dir=3D"ltr">Hi Doug=2C<br> =3B<br>I received several responses=3B =
the conventional wisdom was to remove the differential =3Band have a sp=
ecialist carry out the work. That is on =3Bmy to-do list.<br> =3B<b=
r>Until I get to that item on my list=2C here is what I have done. I draine=
d the Penrite 80W 90 mineral gear oil=2C and replaced it with Penrite 140 G=
ear Oil - Premium Mineral. This product claims =3B"for quieting noisy d=
ifferentials=2C where the =3Bnoise is due to wear=2C thus prolonging th=
e life of the unit". <br> =3B<br>After about 60 miles of driving=2C&nbs=
p=3Bthe whine was certainly still evident. =3BA bit quieter=2C but not&=
nbsp=3Bsignificantly so. =3BFollowing suggestions from others=2C I then=
added Nulon G70 to the Penrite 140 Gear Oil in the differential.<br> =
=3B<br>I have covered some 1=2C123 miles since then. =3B<br> =3B<br=
><strong>Conclusion:</strong> The =3Bpitch level of the diff whine is l=
ower=2C more like a humming=3B it is now =3Beasier to live with =3B=
at and above 60mph. =3BThe =3Bmost improvement occurred =3Bafte=
r adding the Nulon G70. I will continue to run this combination in the diff=
erential =3Bfor now. =3BKnowing the result=2C I would do it again.&=
nbsp=3B<br> =3B<br>As has been pointed out by others=2C the real fix is=
to have the differential adjusted =3Bor repaired by a differential spe=
cialist.</div><div dir=3D"ltr"> =3B</div><div dir=3D"ltr">Hope that ans=
wers your question.</div><div dir=3D"ltr"> =3B</div><div dir=3D"ltr">Re=
gards=2C Graham Wilkie.</div><div dir=3D"ltr">Moruya=2C Australia. =3B<=
br> =3B<br></div><div dir=3D"ltr">>=3B From: douglas.barker@videotron=
.ca<br>>=3B To: glwilkie1@bigpond.com=3B healeys@autox.team.net<br>>=3B=
Subject: RE: [Healeys] SAE 140 Use In Differential To Reduce Noise?<br>>=
=3B Date: Wed=2C 23 Dec 2015 14:02:17 -0500<br>>=3B <br>>=3B This goes =
way back but did anybody respond and if so what was the<br>>=3B conclusio=
n?<br>>=3B <br>>=3B -----Original Message-----<br>>=3B From: healeys-=
bounces@autox.team.net [mailto:healeys-bounces@autox.team.net]<br>>=3B On=
Behalf Of Graham Wilkie<br>>=3B Sent: Thursday=2C April 03=2C 2014 10:43=
PM<br>>=3B To: healeys@autox.team.net<br>>=3B Subject: [Healeys] SAE 1=
40 Use In Differential To Reduce Noise?<br>>=3B <br>>=3B Hello All=2C<b=
r>>=3B <br>>=3B The differential on my 1966 BJ8 starts to whine once I =
have driven for<br>>=3B several miles=2C and everything has warmed up to =
normal operating temperature.<br>>=3B It only occurs during accelerator p=
edal movement down (under load). The<br>>=3B whining diminishes during co=
asting or deceleration.<br>>=3B <br>>=3B The differential is filled wit=
h Penrite 80W 90 mineral gear oil. (Recently<br>>=3B changed).<br>>=3B =
<br>>=3B I am considering replacing my differential gear oil with Penrite=
SAE 140<br>>=3B mineral gear oil. (Note no 'W' prefix=3B it is straight =
SAE 140). This product<br>>=3B claims it will reduce differential noise i=
n older vehicles. I wonder if it<br>>=3B is suitable for our Healeys?<br>=
>=3B <br>>=3B I seem to recall reading on the List that our rear wheel =
bearings are splash<br>>=3B lubricated by differential oil=2C but cannot =
find any reference to that in my<br>>=3B workshop manual. Is that correct=
? I'm concerned that if that is the case=2C<br>>=3B will the SAE 140 be t=
oo viscous to splash lubricate the rear wheel bearings<br>>=3B effectivel=
y?<br>>=3B <br>>=3B Would I be better of using a gear oil additive like=
Nulon G70 instead?<br>>=3B <br>>=3B Any shared thoughts or suggestions=
would be greatly appreciated.<br>>=3B <br>>=3B Thank you.<br>>=3B <b=
r>>=3B Regards=2C Graham Wilkie.<br>>=3B BJ8 Moruya NSW Australia.<br>&=
gt=3B _______________________________________________<br>>=3B Support Tea=
m.Net http://www.team.net/donate.html Suggested annual donation<br>>=3B $=
12.75<br>>=3B Archive: http://www.team.net/archive<br>>=3B Forums: http=
://www.team.net/forums<br>>=3B <br>>=3B Healeys@autox.team.net<br>>=
=3B http://autox.team.net/mailman/listinfo/healeys<br>>=3B <br>>=3B Uns=
ubscribe/Manage:<br>>=3B http://autox.team.net/mailman/options/healeys/do=
uglas.barker@videotron.ca<br>>=3B <br></div>=0A=
</div>=0A=
</div></body>
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