Gearbox Oil

[wwcordin]

Explain to me, (again if it already has been stated) why the oil specified in the original owners manual of 140W (and I assume a non-detergent oil) is not the preferred type. WWC TC # 6749

----- Original Message ----- From: Skip Kelsey kelsey@shadetreemotors.com> To: MikeMarjot@aol.com>; m.jablonski@mei.unimelb.edu.au> Cc: mg-tabc@yahoogroups.com> Sent: Wednesday, June 13, 2001 12:09 PM Subject: Re: [mg-tabc] Gearbox Oil > I will throw my hat in the ring. > > I would recommend using Redline Synthetic in both gearbox and dif. > 75W 140 NS in the Trans. and 80W 140 GL5 in the Dif. > > The gearbox oil is mfg. for manual trans. only, and neither will harm > yellow metal parts. > > Cheers: > > Skip Kelsey....................... > > At 01:00 AM 6/13/01, MikeMarjot@aol.com wrote: > >Mark, > > > >I use Penrite 140 (just about to move to Castrol 140). It seems to work fine, > >but I would be interested to hear what lister have to say about all the > >locations round the TC (or in my case TB) and which oil/grease they are > >using. E.G. Steering, Axle, Engine, Gearbox, Lube points (I use oil not > >grease). > > > >I have seen several comparisons of modern oils with those recommended in the > >lube charts, but would like to here from you lot. > > > >Mike Marjot > >TB 0140 > >Your use of Yahoo! Groups is subject to the > >http://docs.yahoo.com/info/terms/>Yahoo! Terms of Service. > > > > > > > > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ > >

[Mark McCombs]

Its the technology of the future debate. The Red Line has better molecular engineering, I would venture, than what was available at the time, 50 odd years ago. Its slipperier, gets around parts quicker, aids in quicker lubrication, better synco movement, ect...Much like the silicone debate, its "to each his own", but taking advantage of modern, better working lubricants must certainly help preserve these antiques, I would think. Otherwise, I guess I should mix up some "ROP" fuel, of all its 72 octane and enjoy the sputtering, just like the good old days. Regards Mark TC8126

----- Original Message ----- From: "wwcordin" wwcordin@msn.com> To: "Skip Kelsey" kelsey@shadetreemotors.com> Cc: mg-tabc@yahoogroups.com> Sent: Wednesday, June 13, 2001 3:23 PM Subject: Re: [mg-tabc] Gearbox Oil > Explain to me, (again if it already has been stated) why the oil specified > in the original owners manual of 140W (and I assume a non-detergent oil) is > not the preferred type. > > WWC TC # 6749 > > > > ----- Original Message ----- > From: Skip Kelsey kelsey@shadetreemotors.com> > To: MikeMarjot@aol.com>; m.jablonski@mei.unimelb.edu.au> > Cc: mg-tabc@yahoogroups.com> > Sent: Wednesday, June 13, 2001 12:09 PM > Subject: Re: [mg-tabc] Gearbox Oil > > > > I will throw my hat in the ring. > > > > I would recommend using Redline Synthetic in both gearbox and dif. > > 75W 140 NS in the Trans. and 80W 140 GL5 in the Dif. > > > > The gearbox oil is mfg. for manual trans. only, and neither will harm > > yellow metal parts. > > > > Cheers: > > > > Skip Kelsey....................... > > > > At 01:00 AM 6/13/01, MikeMarjot@aol.com wrote: > > >Mark, > > > > > >I use Penrite 140 (just about to move to Castrol 140). It seems to work > fine, > > >but I would be interested to hear what lister have to say about all the > > >locations round the TC (or in my case TB) and which oil/grease they are > > >using. E.G. Steering, Axle, Engine, Gearbox, Lube points (I use oil not > > >grease). > > > > > >I have seen several comparisons of modern oils with those recommended in > the > > >lube charts, but would like to here from you lot. > > > > > >Mike Marjot > > >TB 0140 > > >Your use of Yahoo! Groups is subject to the > > >http://docs.yahoo.com/info/terms/>Yahoo! Terms of Service. > > > > > > > > > > > > > > > > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ > > > > > > > > > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ > > >

[brian bax]

Hello Mark, I've been trying Penrite Gearbox oil 30 for the last three weeks. As you would expect the change is quicker than with 140 but the box is noisier, especially in third. I wouldn't recommend it. Skip and the others have got me thinking about modern grades.... Cheers, Brian Bax TC3550> -----Original Message-----

> From: m.jablonski@mei.unimelb.edu.au > Sent: Wed Jun 13 02:24:58 BST 2001 > To: mg-tabc@yahoogroups.com > Subject: [mg-tabc] Gearbox Oil > > Dear Listers > > I want to change my gearbox oil and was wondering what other listers > use in their TC gearboxes. I was sold some Penrite Gearbox Oil 30 > but now wonder whether it is too light. Penrite's brochure states > that it is "for use in manual, overdrive and pre-selector gearboxes, > or where an engine oil was originally used." The original oil was > specified as a 140 grade gearbox oil and I would have thought that a > 90 or 80W/90 oil without EP additives would be the best. The car > currently appears to have a modern 90 (or thereabouts) oil with EP > additives (judging by the smell). > > Has anyone used Penrite's Transoil 90? This is a GL1 monograde gear > oil. The Gearbox Oil 30 is a GL3 oil with no friction modifiers or > EP additives. Has anyone used this oil? > > Mark Jablonski > Melbourne Australia > > > > > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ > > >

[ross macpherson]

I second Skips opinion on Redline products. My TC has a gearbox that will require attention soon. I added the Redline and I can truely say it's almost a "rebuild in a can" Wonderful stuff! Ross -----Original Message----- From: Skip Kelsey [mailto:kelsey@shadetreemotors.com] Sent: June 13, 2001 10:10 AM To: MikeMarjot@aol.com; m.jablonski@mei.unimelb.edu.au Cc: mg-tabc@yahoogroups.com Subject: Re: [mg-tabc] Gearbox Oil I will throw my hat in the ring. I would recommend using Redline Synthetic in both gearbox and dif. 75W 140 NS in the Trans. and 80W 140 GL5 in the Dif. The gearbox oil is mfg. for manual trans. only, and neither will harm yellow metal parts. Cheers: Skip Kelsey.......................

[m.jablonski@mei.unimelb.edu.au]

Thanks to all who responded. Brian, You've confirmed my suspicions about the Penrite Gearbox Oil 30 and I won't use it. It seems like a 140 grade oil is the way to go. Eric, what do you know about the Redline synthetic oils that some have recommended? Would these contain harmful levels of EP additives? I note that one of these is a GL5 oil. Does "GL5" specify performance or composition? i.e., if it specifies composition, from what you've said, it would contain an undesirable level of EP additive. For those using Penrite 140 oils, which one are you using, Transoil 140 which is a GL1 oil (and according to Eric may not provide sufficient long-term protection) or another? Mark Jablonski Melbourne, Australia

[Steve Rankin]

While we are at it, what is some of the brand names for the appropriate rear wheel brg grease which are are oil resistant. Steve rankin TC 6646 About to launch!

> ----- Original Message ----- > From: "Skip Kelsey" kesey@shadetreemotors.com> > To: MikeMarjot@aol.com>; m.jablonski@mei.unimelb.edu.au>

mg-> Cc: tabc@yahoogroups.com>

> Sent: Wednesday, June 13, 2001 10:09 AM > Subject: Re: [mg-tabc] Gearbox Oil > > > > I will throw my hat in the ring. > > > > I would recommend using Redline Synthetic in both gearbox and dif. > > 75W 140 NS in the Trans. and 80W 140 GL5 in the Dif. > > > > The gearbox oil is mfg. for manual trans. only, and neither will harm > > yellow metal parts. > > > > Cheers: > > > > Skip Kelsey....................... > > > > At 01:00 AM 6/13/01, MikeMarjot@aol.com wrote: > > >Mark, > > > > > >I use Penrite 140 (just about to move to Castrol 140). It seems to work > fine, > > >but I would be interested to hear what lister have to say about all the > > >locations round the TC (or in my case TB) and which oil/grease they are > > >using. E.G. Steering, Axle, Engine, Gearbox, Lube points (I use oil not > > >grease). > > > > > >I have seen several comparisons of modern oils with those recommended

in

> the > > >lube charts, but would like to here from you lot. > > > > > >Mike Marjot > > >TB 0140 > > >Your use of Yahoo! Groups is subject to the > > >http://docs.yahoo.com/info/terms/>Yahoo! Terms of Service. > > > > > > > > > > > > > > > > Your use of Yahoo! Groups is subject to

http://docs.yahoo.com/info/terms/

> > > > >

[Eric Worpe]

Hi Mark, You've raised a good point about oil specs. being based on either performance or composition. It's reasonable to assume that GL-? is a performance level and if synthetic oils can achieve such a spec. without aggressive levels of additives, then it seems sensible to use them. The only time I would avoid synthetic oils would be whilst running in a new crown- wheel and pinion. I feel uneasy about the "rebuild in a can" suggestion by Ross, I know it's tongue in cheek but many would be happy to believe it. If the qualities of synthetic oils can mask what would otherwise be signs of wear, then it may not be doing one a favour in the long run. Gear machining is one of the most precision aspects of motor engineering, and if wear on the layshaft for example, upsets the correct mesh of the gears, then the rate of wear on the gear teeth can accelerate. Usually the first signs of poor gear meshing is noise which can be masked by using thicker oils or even by adding sawdust, as some less than savoury types have tried. To obtain the real benefits of synthetic oils, it would be prudent to rebuild the gearbox first. The Penrite Transoil 140 does not meet the spec. originally advised by the MG Car Company. The Penrite "mild EP" should be to the GL-4 spec. Regards, Eric.

[Mark Jablonski]

Thanks Eric, on the basis of what you've said I've decided that for the time being, until I know what condition the gearbox is in, I'll use the Penrite Mild EP Gearoil. For those who are interested, I've found out from Penrite that the Mild EP oil is borderline between a 90 and 140 grade oil, tending towards the heavier end. I've also found out that the Gearbox Oil 30 is a 25/70 oil and at higher temperatures would maintain a higher viscosity than the Mild EP oil. It is a GL3 oil. Thanks again to all who responded. Mark Jablonski Melbourne, Australia -----Original Message----- From: Eric Worpe [mailto:E.Worpe@surrey.ac.uk] Sent: Thursday, 14 June 2001 23:17 To: m.jablonski@mei.unimelb.edu.au Cc: mg-tabc@yahoogroups.com Subject: Re: [mg-tabc] Gearbox Oil Hi Mark, You've raised a good point about oil specs. being based on either performance or composition. It's reasonable to assume that GL-? is a performance level and if synthetic oils can achieve such a spec. without aggressive levels of additives, then it seems sensible to use them. The only time I would avoid synthetic oils would be whilst running in a new crown- wheel and pinion. I feel uneasy about the "rebuild in a can" suggestion by Ross, I know it's tongue in cheek but many would be happy to believe it. If the qualities of synthetic oils can mask what would otherwise be signs of wear, then it may not be doing one a favour in the long run. Gear machining is one of the most precision aspects of motor engineering, and if wear on the layshaft for example, upsets the correct mesh of the gears, then the rate of wear on the gear teeth can accelerate. Usually the first signs of poor gear meshing is noise which can be masked by using thicker oils or even by adding sawdust, as some less than savoury types have tried. To obtain the real benefits of synthetic oils, it would be prudent to rebuild the gearbox first. The Penrite Transoil 140 does not meet the spec. originally advised by the MG Car Company. The Penrite "mild EP" should be to the GL-4 spec. Regards, Eric.

[Paul Camp]

----- Original Message ----- From: "Paul Camp" PCamp@pearsons-enfield.co.uk> To: pearsons-enfield.co.uk@returns.onelist. com> Sent: Friday, June 15, 2001 11:53 AM Subject: Re: [mg-tabc] Gearbox Oil > Mark > Although I am using the Transoil 140 Penrite .I have also used the Mild EP . > In view of the comments on this Thread I will switch back to Mild EP > > Paul Camp TC3348 > ----- Original Message ----- > From: m.jablonski@mei.unimelb.edu.au> > To: mg-tabc@yahoogroups.com> > Sent: Thursday, June 14, 2001 4:43 AM > Subject: [mg-tabc] Gearbox Oil > > > > Thanks to all who responded. > > > > Brian, You've confirmed my suspicions about the Penrite Gearbox Oil > > 30 and I won't use it. It seems like a 140 grade oil is the way to > > go. > > > > Eric, what do you know about the Redline synthetic oils that some > > have recommended? Would these contain harmful levels of EP > > additives? I note that one of these is a GL5 oil. Does "GL5" > > specify performance or composition? i.e., if it specifies > > composition, from what you've said, it would contain an undesirable > > level of EP additive. > > > > For those using Penrite 140 oils, which one are you using, Transoil > > 140 which is a GL1 oil (and according to Eric may not provide > > sufficient long-term protection) or another? > > > > Mark Jablonski > > Melbourne, Australia > > > > > > > > > > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ > > > > >

[Odd Knudsen]

Hello listers! What is your recommendation for gearbox oil? I am sure some of you have experience of what to use. I would prefer to buy locally, so if you can recommend some world-wide brand, I would be happy... Cheers, Odd in Trondheim, Norway TC EXRK1087 [Non-text portions of this message have been removed]