[Healeys] Gearbox oil

[Bob Spidell]

What about the brass shifting forks? This is one of the more lucid explanations I've seen: http://www.machinerylubrication.com/Read/28958/ep-additives-effects 

IMO, it's pretty hard to beat this stuff: https://www.redlineoil.com/product.aspx?pid=46&pcid=7 I tried it because it seemed my OD was slower to engage when hot. I wasn't expecting it--so no confirmation bias--but I thought the gearbox shifted a little smoother, and the OD did engage a little quicker. Have used it for 60-80K miles or more (I really should keep track of this stuff). Not an objective analysis, but it appears there is less brass 'shake' suspended in the fluid at changes, and I only change it out every 50K miles or so. 

On ATF in gearboxes: Ford calls for Mercon V in the Tremec 3650 in my Mustang. I thought shifts were a little notchy, so tried Royal Purple Synchromax on someone's recommendation. Seemed to help a bit; almost 122K miles on the gearbox with no issues. 

Bob 

----- Original Message -----

From: "Michael Salter" <michaelsalter at gmail.com> 
To: "Forum" <healeys at autox.team.net> 
Sent: Tuesday, November 1, 2016 2:14:27 PM 
Subject: Re: [Healeys] Gearbox oil 

The subject of gearbox oils has be discussed on this list more than once. 
I am not advocating the use of gear oil in these boxes but the subject is sure to be raised again.. 
In the interests of saving some band width a couple of points. 


    1. No one has ever reported seeing any evidence of Extreme Pressure (EP) additives damaging the bronze syncro rings in our gearboxes. 
    2. Laycock DeNormanville, the manufacturer of our overdrive units DO NOT specify what lubricant is used in their overdrive units, they leave that up to the manufacturer of the gearbox to which it is attached and shares its lubricant. EP oils will not adversely affect the overdrive unit, in fact 80/90 gear oil was the factory recommendation for the TR6 with either type of overdrive "A" or "J". 
Now back to regularly scheduled program :-) 

Michael S 
BN1 #174 

On Tue, Nov 1, 2016 at 1:08 PM, Derek Job < derek.c.job at gmail.com > wrote: 



I agree with Steve. I'm now using Penrite GB30 Gearbox oil. 

Derek 

On Tue, Nov 1, 2016 at 4:06 PM, BJ8Healeys < sbyers at ec.rr.com > wrote: 

<blockquote>



Another question that will result in a lot of different opinions. I've always used 30-weight non-detergent oil in my gearbox and overdrive. Non-detergent according to the theory that because there is no oil filter in the system non-detergent oil allows any wear particles to settle out of the oil instead of being continuously circulated through the mechanicals. 




Steve Byers 

HBJ8L/36666 

BJ8 Registry 

AHCA Delegate at Large 

Havelock, NC 







From: Healeys [mailto: healeys-bounces at autox.team.net ] On Behalf Of Charlie Schott 
Sent: Tuesday, November 01, 2016 9:45 AM 
To: Richard Kahn; Richard Ewald 
Cc: healeys at autox.team.net 
Subject: Re: [Healeys] Gearbox oil 





Will someone please tell me what weight of oil to use in a BJ8 gearbox with overdrive. Thanks. 





Regards, 





Charlie Schott 










</blockquote>



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