[TowerTalk] Mixing oils in HDX689

[Mickey Baker]

There won't likely be a problem either way, but, given the current cost of
oil and the amount in the typical hub, this is a value decsion worth $10 -
the cost between synthetic and conventional oil. For my $10, synthetic oil
is in my hub.

Good pertinent reading at:
http://www.machinerylubrication.com/Read/1290/synthetic-conventional-oils

73,

Mickey N4MB

On Mon, Nov 10, 2014 at 12:40 PM, Thomas Noel <tnoel at mac.com> wrote:

> > ## I had notes on that..since I own a 5000 lb, old style HDX-689.
> > I believe if you had dino oil in the gearbox... and wanted to switch to
> > synthetic, after draining the old stuff,   you need to use some special
> > flushing compound 1st.    Then after flushing done, and drained,
> > the synthetic can be added.
>
> Mobil says there is NO PROBLEM with mixing synthetic oil and natural dino
> oil in any ratio for use in cars and motorcycles, so I can’t imagine how
> there could be a problem in your gearbox. That gearbox has nothing like the
> high-speed shear forces found in automotive applications, and expensive
> synthetic oil is a waste.
>
> Flame-proof suit on…
>
> Tom
> kf7rsf
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-- 
Mickey Baker, N4MB
Fort Lauderdale, FL
*“Tell me, and I will listen. Show me, and I will understand. Involve me,
and I will learn.” *Teton Lakota, American Indian Saying.