CREDITOR'S RIGHTS

1) Why don't automobile mechanics take out mechanic's liens? 2) Differentiate mechanic's liens from artisan's liens? 3) What creditors options are available if a defaulting debtor has no property? 4) Differentiate between sureties and guarantors of debt 5) Which defenses of the principal are not available to a surety/guarantor? 6) Explain the 3 rights of the surety/gurantor. Thanks!