@campbeam
much appreciated, very interesting, it’s got me buggered as on the Toyota Estima groups everyone is quoting 1.6 litres cold for a drain and drop, now, these run the exact same drivetrain as the Aurion 2GR-FE and U660E combo, so in theory all figures should line up, I’m hedging my bets on your maths and techniques though, you seem well versed….
thanks again