[Healeys] Gearbox oil volume

Bob Spidell bspidell at comcast.net
Mon May 25 23:21:22 MDT 2015

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.



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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