Took a bit but finally found a readily available Motorex M3.0 substitute. $20 a liter is weaponized pricing. Peak Final Charge Global Extended Life. I got mine at O'reillys for 17 eagle boners/ gallon. M3 is nitrite, amine, phosphate, and silicate free using an OAT organic acid technology. This ticks all those boxes. It wont work to replace Motorex M5.0 which utilizes a silicate.