No, washing up liquid will strip off and damage Osmo Polyx oil and Osmo Top Oil, we recommend using Osmo Wash and Care, The Osmo Spray cleaner or Osmo Interior Spray Cleaner which not only clean but also help to maintain the finish.
No, the heat from the steam cleaner will damage the Polyx Oil.
We recommend using Osmo Wash and Care for routine maintenance either with the Osmo Floor Cleaning Kit ( a telescopic handle will also be required) or the new Osmo Spray Mop system.
Like all oils and waxes Osmo oils will thicken at low temperatures so will not be absorbed in to the wood, the white spirit will then evaporate off and you will be left with a sticky coating on the surface of the wood. We recommend where possible not applying Osmo wood oils below 10°C or when the temperature will fall below 5°C within 8 hours of application. It is always a good idea to store your Osmo products at room temperature for at least 24°C hours before use.
These products are basically the same clear product but the 420 Extra contains a biocide to help protect against algae, mildew and fungal attack.