I know BC is diferent as you do not have title. Has anyone had any issues taking an RV into mexico when there is a loan against it and you just have the registration that does not indicate a lien.
If the registration or document presented to Aduana has the words LIEN HOLDER and the name of the finance company or bank, you will need a permit from the lender to take the unit out of the country.
If the documents being presented to the Aduana do not have any other name or lien holder then Aduana will not know that the vehicle is financed.