I am using SMT2 and SMT3 in all my engines at home. My 2017 VW Passat 2litre diesel is getting over 100km more in a tank which is approx 12% better economy. The engine is also much quieter. My chainsaw oil is getting SMT2 added and the chain is going twice as long before sharpening and the blade has not needed sharpening yet. It is amazing stuff!