Have motorkote from the USA (www.motorkote.com) bought with allegedly sensational results (clear fuel saving, running faster, etc.). May I add this, as stated, to the engine or to the automatic transmission of the Lexus LS400 Bj95 (all Toyota oils). Risk? Does anyone know? Would you like to upgrade to car gas this year, then everything gets messed up with enginekote? Risk? Thank you, gkfr.