Speeditwin 6039 Oil Considerations

[sedover]

Bean oil is castor oil.

Nothing like the smell of bean oil in the morning, just had to say it..

The spec of mineral oil and not TCW by Firestone back in 53 was probably because the TCW rating was not in use at that time,

Steve

[collectorinspector]

I would like to know what "Bean Oil" is as well!

Forgive my thought with oils here but………………you use what the maker intended?

I am a Mechanical Commissioning Engineer who happens to have our hobby………………

Modern versions as to original requirements only as far as I am concerned……..we are dealing with old machines designed to run for ever if maintained and in fine fettle. Lubrication for them is so simple as to be a non event. The design teams specified what was required so no deviation or smoke and mirrors…….or no smoke and crunch.

Mixing a concoction based on who says what will always get my back up………….

No more from me on this as I state on other international sites, as similar, AOMCI.

My two cents worth is all.

Regards

B

[Mumbles]

quote sedover:

Bean oil is castor oil.

OK, now I know. Thanks! 😀

Living close to a speedway, I’ve breathed in lots of methanol/nitrous fuels over the years. My old model airplanes use castor oil in their fuel.

That darn ‘bean oil’ seams to make it a bit slippery for the boys when it gets on the pavement!

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[jeff-register]

Mumbles,
Slang for castor bean oil. Never have run the mineral oil yet. Yes Scott says it’s OK but that was how many changes ago? 😮
Jeff

[Casey Lynn]

Also if you want another good smelling oil that WILL do the job with no questions try Klotz. Not cheap but extremely good. In keeping with the original intent of this thread, Klotz would be mixed at 50/50 as well (with the aircraft ashless dispersant)

[jeff-register]

Pappy,
Thank you so much. I enjoy using different oil products but I’m lacking the knowledge of a safe oil to use. Again thanks I will try the Klotz brand oil with the aircraft ashless. Only what weight should I use in my all stock inventory outboards. Also if I may ask with my Mercury 200, my compression is very good with that rebuild of rings & gaskets.

[Casey Lynn]

Since the square tankers seem to like the heavier mix of Aircraft and TCW and a plain bearing engine likes another brew and a jeweled engine likes still another that is a hard question to answer.
I would not run Klotz as an every day type of oil as it is expensive. Fun to run as it has a very distinctive smell to it.

[sedover]

Sent off an email to Amsoil last Thursday.

Provided a brief outline of engine design and application. Received reply today, well, it is a bit of a dead end in that first I should find out what was used in the past. The other suggestion was to use Amsoil’s HP marine at 40:1. But that was only his "guess".

Steve

[Author]

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