[Healeys] Gearbox oil volume

Oudesluys coudesluijs at chello.nl
Tue May 26 00:27:52 MDT 2015

Nonsense. Expansion is no issue, you would not even notice it if you 
could measure the level on a dipstick. Anyway, the variety in the 
castings will give you more differences in volume than expansion. 
Filling to the level of the filler plug hole is recommended by 
practically every motor manufacturer of the day. This way it is certain 
that it is properly filled.
There is plenty of space filled with air above the filler plug hole if 
you are worried about expansion. Most of the time the filler plug hole 
is about halfway up the casting.

Kees Oudesluijs

Bob Spidell schreef op 26-5-2015 om 7:21:
> On the original volume question, I'm not comfortable with filling 'til 
> it overflows.'  I think you need some head space to allow for 
> expansion of the oil as it heats up.
> Thoughts?
> Bob
> On 5/25/2015 9:09 PM, Earl Kagna wrote:
>> Roger:
>> Redline MT 90 is the way to go – a slightly heavier version of MTL, 
>> which oddly enough stands for Manual Transaxle Lubricant.  It is 
>> formulated with friction enhancers for that use, which is why it 
>> works so well in the overdrive – the cone clutch likes the stuff, as 
>> do the synchro rings in the gearbox.  Just my opinion, there are 
>> those who would disagree.
>> I doubt that the leak pattern will be any different. Oil leaks in 
>> Healeys are reassuring – if there is no oil leaking from a British 
>> car, it’s probably empty!
>> Earl Kagna
>> Victoria, B.C.
>> BJ8, BT7 tri-carb
>> *From:* Roggrace <mailto:roggrace at telus.net>
>> *Sent:* Monday, May 25, 2015 6:15 PM
>> *To:* Michael Oritt <mailto:michael.oritt at gmail.com>
>> *Cc:* Austin Healey <mailto:healeys at autox.team.net>
>> *Subject:* Re: [Healeys] Gearbox oil volume
>> I am about to change my g/b and o/d oil for first time since taking 
>> ownership; just to be sure that I know what is in there;
>> and I don't want to start another gearbox oil discussion. .....
>> However so many people recommend MTL or MT90 that are both synthetic.
>> I am a little reluctant to as don't need any new oil leaks with 
>> synthetic; maybe already have synthetic ,,,.?
>> Anyhow for convenience was planning to use same as use in engine - 
>> Valvoline VR1 20-50
>> Any thoughts regarding synthetic oil and gearbox leaks from more 
>> experienced users appreciated.
>> rg
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