Coolant for Valve grinding machine

[Afordman31]

Been looking on the Internet about coolant for a Sioux valve grinder.
I see some people use automatic transmission fluid.
Another person said Marvel Mystery Oil.
Any thoughts on these.
I don't want to use anything with water in it as the machine is in a unheated spot. Thanks

[37 Cab]

I always used trans fluid. Never gave it much though as it seemed to work well.

[jake197000]

i use valve grinding oil from goodson.depends on what you are grinding and how tight your machine is.and what stone you have and how it is dressed.and how sharp your diamond is.if atf works good then your good.

[JWL]

Yes, I use Goodson recommendations and it seems to work for steel and titainium valves.

[flatheadmurre]

Stay away from the organic versions of oil if you don´t use it real frequently and have an enviromental policy to live up to...they go bad from sitting.
grindingoil is like honingoil...you can get away with other stuff but for best performance on the more difficult materials use the correct oil.
Goodson, regis,Kwik-way,CHS...lot´s of places including Epray and amazon have it.

[Ronnie]

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Goodson x 2 here also.

R