API TC is long obsolete. Most of the OEM oil is jaso FC/FD which is alot better quality than API TC. Sabre Carrie's no certifications either.If you insist mate ! All internal combustion engines oils are rated for specific engine service groups (Sae.) . Api-TC is the applicable group that my current choice " Sabre " qualifies . Api- EGB would be your European rating equivalent mate . As to larger automotive or commercial or industrial 2 cycle applications Api-CD or C. F. would apply as to most stringent standards . As a former Diesel Mechanic back in the day I serviced numerous industrial 2 cycle diesels in the Mining Sector for ventilation and auxiliary lighting gen sets .