What kind of light oil should I/should I not use for BwCHMANN train lubrication?  Do I need a grease? 

Excellent suggestions all, thanks again!  But just another question:  what kind of light oil should I/should I not buy for train lubrication?  Do I need a grease?  Much appreciated!

Joe,  Thanks for your continued help.  The link for a picture of the converter: 

https://www.lazada.co.th/3pcs-100w-power-converter-adapter-ac-110v120v-to-220v240v-up-downvolt-transformer-intl-16205560.html?spm=a2o4m.order-details.0.0.ZS5VN2

I agree, Trainman 203, wholeheartedly, should this converter solve that problem, Mode B?

Product details of 3PCS 100W Power Converter Adapter AC 110V/120V to 220V/240V Up Down Volt Transformer - intl

Description:

Dual Channel Voltage Converter from 110/120V to 220/240V, 220/240V to 110/120V
Just plug it into the foreign outlet, then plug your appliance into the female side of the converter, and use your appliance just as you would at home
For all electronice equipments up to 100 Watt. Such as hairdryers, coffee cup heaters, coffee makers, irons, clothes steamers, stereo and cassette players, DVD players, radios, electric shavers, cameras, and any other small appliances
SIZE : 90mm x 52mm x 45mm (connect leg not included to measure)
Weight: about 420g

How to use:
Turn the switch to AC117V for mode A, Turn the switch to AC230V for mode B
Mode A:
Input : AC110-120V 50/60Hz
Output : AC220-240V 100W
Mode B:
Input : AC220-240V 50/60Hz
Output : AC110-120V 100W
Note: Check you voltage and switch to the right size bofore use

Should this converter do the job, Mode B?

Product details of 3PCS 100W Power Converter Adapter AC 110V/120V to 220V/240V Up Down Volt Transformer - intl

Description:

Dual Channel Voltage Converter from 110/120V to 220/240V, 220/240V to 110/120V
Just plug it into the foreign outlet, then plug your appliance into the female side of the converter, and use your appliance just as you would at home
For all electronice equipments up to 100 Watt. Such as hairdryers, coffee cup heaters, coffee makers, irons, clothes steamers, stereo and cassette players, DVD players, radios, electric shavers, cameras, and any other small appliances
SIZE : 90mm x 52mm x 45mm (connect leg not included to measure)
Weight: about 420g

How to use:
Turn the switch to AC117V for mode A, Turn the switch to AC230V for mode B
Mode A:
Input : AC110-120V 50/60Hz
Output : AC220-240V 100W
Mode B:
Input : AC220-240V 50/60Hz
Output : AC110-120V 100W
Note: Check you voltage and switch to the right size bofore use

I'm living in Thailand and I brought my Bachmann trains with me.  Do I need a transformer so I don't fry my trains?  If I do, what kind of transformer should I buy?