[GreenKeys] KS-7470

[Bob Camp]

Hi

Probably worth adding:

Mixing synthetics with petroleum based products can be (but is not always) a problem. Best to try a bit of whatever and see what happens. Watch for separation of the two products.  Also, in extreme cases, watch for gumming.

Bob

> On Jun 12, 2015, at 6:10 PM, Richard Knoppow <1oldlens1 at ix.netcom.com> wrote:
> 
>    Two possibilities:  One is Microil made by Kano Labs and described as instrument oil.  See their web site for details. Also, most oil companies make "R&O Turbine Oil"   R&O means it has additives to prevent rust and oxidation.   Turbine oil is recommended as a general purpose fine machinery oil, especially for electric motor bearings.  It needs agitation from the bearing so is not a substitute for grease.  There are a number of synthetic greases made for aircraft use under names like Aeroshell No.7.  A grease with similiar specs is specified by Collins Radio for the cams and gear train in the R-390A.   There are also fine synthetic (silocone based) oils and greases available at hobby shops that specialize in model trains.   These do not gum up with age but may not be as good as lubricants as highly refined petroleum based oils like Microil or the turbine oils.   Turbine oils are usually specified with ISO numbers.  No.46 is about equal in viscosity to SAE 20 weight.  Normally, these are sold in 55 gallon drums but are also available in small amounts with some searching.  One source says Grainger carries it.
> 
> On 6/12/2015 11:24 AM, Jim Haynes wrote:
>> Speaking of gumminess, we know that KS-7470 is not really good around the
>> plastic tubing that was used in Model 28s to enclose the wire bundles.
>> They get noticeably sticky.
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> 
> -- 
> Richard Knoppow
> 1oldlens1 at ix.netcom.com
> WB6KBL
> 
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