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Re: Filling Gearbox

To: Barrie Robinson <>
Subject: Re: Filling Gearbox
From: "Paul T. Root" <>
Date: Thu, 26 May 2005 11:32:02 -0500
The convention wisdom on that Rover (Triumph TR7/8) 5 speed is to use
ATF. It has a pump at the back with a Bic pen sized tube that the fuild
needs to go through.

This is also the reason you can't flat tow a TR7/8 w/out removing the 
drive shaft. I did that and turned a slightly broken transmission into
a box of metal junk.

My experience is the MGB 4-speed is considerably stronger transmission
than that 5-speed. I've never had trouble with the 20W-50 I put in it.


Barrie Robinson wrote:
> I while back I bought a Maserati Biturbo. Like a lot of cars the second 
> gear was hard to engage when the gearbox was cold and this just not 
> because it was new.  I complained and the dealer changed the oil to ATF 
> - Apparently Porsche had the same problem and fixed it by using ATF.  
> Problem solved. After that I used it on my 1969 Maser Mistral and it 
> worked a treat.   So, the question is, How about ATF in MG gearboxes.  I 
> have a Rover  SD1 5-speed in my MGB GT V8 and I have used ATF in 
> I in danger!!!!
> At 07:45 AM 5/26/05, Paul Hunt wrote:
>> A 79 should have the side filler/level hole accessed from under the 
>> car, it
>> changed about the time the bumpers changed from chrome to rubber.  FWIW I
>> find checking my CB easier with its built-in dipstick and filling it 
>> with a
>> short length of clear hose pipe with a funnel in the top, then 
>> checking the
>> level with a mirror and a torch/flashlight on my RB and using a bendy
>> squeezy bottle from underneath to top up.  But then I've heard of someone
>> using a long length of clear hose down through the engine compartment and
>> into the filler hole on those.
>> Whatever grade of oil is suitable for the engine depending on your local
>> climatic conditions is correct for the gearbox, and 10W/40, 10W/50 and
>> 20W/50 are all indicated as suitable for temperate zones in the Workshop
>> Manual.  15W/50 and 15W/40 are 'modern' grades and as they fit within the
>> indicated range should also be suitable.
>> PaulH.
>> ----- Original Message -----
>> > I need to drain/re-fill the gearbox on my 79 MGB. I have no idea 
>> if/when
>> it
>> > was ever done before. From what I can see in the book the filler 
>> hole is
>> > behind the radio console ...
>> Your messages not reaching the list?
>> Check out

    ______      Paul T. Root
   /    _ \     1977 MGB
  /  /||  \\
||\/ ||  _ |
||   ||   ||
  \   ||__//

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