Dipping my toes into turning

Way oil oil comes in various visosities, it has tachyfiers to help it stick to metal and not squeeze out, it is generally not rated as a gear or hydraulic oil unless stated as such. Vactra #2 ISO68 is not specified for gears, although it may be used as such with low speed gears, Vacuoline 1409 is also ISO 68 and rated for ways and gears. Many people also use hydraulic oil and gear oil interchangeably as the same, but there are differences. In most cases this is not an issue, but under more extreme conditions then it is a different story. Viscosity changes with temperature and also needs to be factored in.
Oh I was under the (mistaken as it seems) impression that ISO 68 and 'way oil' were effectively synonyms.

Would you characterise the gears in the lathes us hobbyists use as 'low speed gears'? I guess some lathes do go up to about 3000 RPM.

The reason I ask is that I'm currently trying to decide how to handle the lubrication of the newly installed hi/lo gears (it's a long story, which I'll recount in a post when I've finished the rebuild of the whole lathe:grin:) in my rebuilt Chinese 7x headstock. I can either put zerks in the top of the headstock above the gears, or oilers.

I'm guessing zerks would be better as these gears will almost certainly be noisy enough with grease. However, I was thinking of using oilers and way oil (I have ISO 68), since it's not impossible chips might find their way in to the headstock.
 
@koenbro : Yes, absolutely the DTE 24 will work. However, given that you likely need at least 3 quarts of the stuff, don't you want to get the 5 gallon bucket? The Shell dealer hasn't opened yet so I report the Shell Tellus finding today. It may well be worth it to chat to the local Mobil and Shell distributor.
 
After some calling around, it looks like:

  1. Amazon has a decent price on the DTE 26 in 5 gallon pails. $106 delivered.
  2. Similar for Vactra 2 way oil, $41 delivered
  3. Not great prices on Mobil DTE 24 though. The Shell dealer is supposed to call me back. I believe that the Tellus 32 is the same as DTE 24. Too bad you aren't close by, we could have bought a 5 gallon pail and split it!
 
Get a 5 gallon bucket of DTE 24 heavy medium from Zoro shipped free using one of their 10% coupons or 20% if lucky enough to get one and you have enough to change it several times which for light use could last you a decade or more.

DTE heavy medium is iso 68 and is an ideal lathe oil.

The only problem is that for some reason that specific oil has been expensive everywhere for a long time now. But you get 5 gallons for the price of 2 one gallon bottles. My 1440 needed around a gallon in the headstock. I'll put the same thing in the apron no need to over complicate it.

Vactra No 2 for the ways is fairly affordable.
 
Zoro is significantly overpriced relative to what I can get from the local dealer. For example, the Shell equivalent of ISO32 is $106 for a 5 gallon and $128 for the heavier ISO 68. That is how I plan to go.
 
Absolutely the Shell equiv is cheaper everywhere, if that is what you want. Was trying to get you a decent price on the expensive brand because the Mobil is just pricey. $128 for some Shell 68 sounds pretty good.
 
@koenbro KINDA IMPORTANT do not use high pressure lubricating oil that is sulfated. This will destroy all the bronze in your headstock, and in a short time. This is due to copper and zinc depletion.

Now for @Koenbro,@ vk2024, and @SouthernChap - listen to @mksj - way oil is a specific formulation (yes, with tackifiers) to spread out on, and stick to, surfaces in any orientation. You can buy way oil in 32, 68, and 80 ISO. It is just fine to use in a gear box, but not what it was formulated for. Often high end lathes use a full bath apron, with way oil in it, and a pump to pump from the apron for the ways to lubricate them, along with the lead screw.

So using way oil won't do your lathe any harm, as long as you use the right viscosity (32 or 68)

@SouthernChap - sadly hydraulic oil is available in all the viscosities imaginable. from 20 and below, up to over iso90. hydraulic oil is a formulation, that prevents oxidization, foaming (very bad) and to reduce decomposition of the oil under the sliding pressure of the spur gears. Sadly way oil doesn't have those additives, but features other additives.They are about as different as baby oil and motor oil.
[updare - my apologies, sseveral above have already commented on this. I had the update ready, and was called away, then hit 'save. sorry about that]

Lastly, @vk2024 your hydraulic oil had better not have detergent in it. Most counter staff won't know anything about these issues. You need to talk to an oil engineer. I have had great talks with engineers from Shell, Esso and our local oil blender/refinery. There has to be antifoaming additives in hydraulic oil, and they may contain additives to suspend particles to get them to the filter usually not detergent, but a floculating agent or other binder to suspend the metal particles. In a hydraulic system, it is good to circulate the particle to the filter. In an enclosed gear assembly, such as a headstock or apron, it isn't ideal but the additional wear is negligible. Putting some rare earth magnets in the bottom of the gearbox (well away from the gears) will take care of any suspended particles.

I don't use gear oil in my gearboxes. They are often missing antioxidants, as gear boxes are most always sealed from the atmosphere (or very limited air exchange). The interval to change the oil is too short for me. These things are always trade offs.

I use Tonna 68 for all my way oil needs, and inexpensive ISO hydraulic oil for all my gear boxes. (any reputable way oil and hydraulic oil will substitute nicely) I buy them in 5 gallon pails, and that encourages me to replace the oil more often than if I had to run out to buy oil for a change. And having 3 lathes and 4 mills helps up the requirement.
 
@Dabbler: With 4 lathes and 3 mills, I have to say that your handle does not quite fit :D. Yes, I agree. I plan to use the Shell 32 in the apron, Mobil DTE 26 in the headstock and Vactra 2 on the ways. How does one even find these oil engineers? People at the stores have zero clue. I was looking at AW 68/32 formulations from Napa, but the MDS and the SDS say nothing about sulfuration or detergent. I was aware of the detergent issue.
 
How does one even find these oil engineers?

You look up the place online and get the phone number. Go to sales, then ask for a technical representative. Once you get beyond the basics (which the tech reps are great at) - for additives and deeper questions you get in line to get a callback from an oil engineer.

For my local company, I just showed up on the doorstep, and said I had some issues with the HP lubes and wanted to sort them out. The receptionist took me to the engineer's desk and we and a 10 minute chat.
 
This is an excellent discussion and thank you all for contributing. As a summary for the uninitiated, what products do you actually recommend for the head stock, the apron, and the ways? Pls don't say I need to talk to an oil engineer as I have neither the time nor access to one, but if you have talked to one, just share the actual product recommendation from Shell or Mobil or other accessible brands. I guess all lathes are similar when it comes to this and all I need is "good enough". I visit Porsche forums sometimes and discussions about "the best oil" are a complete waste of time so am emotionally scarred from them.

I don't use the lathe a lot, so don't want to store 5 gal drums. Happy to just get a gallon.

So far @vk2024 has the practical advice; "Shell 32 in the apron, Mobil DTE 26 in the headstock and Vactra 2 on the ways". If you have other advice, please link to MSC Direct or Zoro or Amazon or similar sources for 68 and 32 weight oils that are not sulfated, appropriately low on detergents, and I can pour them safely into the spindle gearbox and apron.

Thanks!
 
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