Obviously no one in your group had space for it?      I will let my buddy know.     We are going to Gaspe next Monday otherwise it would have been a good excuse to go up and get it this weekend.    

I don't like iso flex in doo 600's. The poo's the crank bearings are lubed via oil pump. 

Poo 650 may not get the same MPG as Doo 900 na, but it is closer than you think. As signfan says, the current Matryx Poo has 43 L tank to the current MXZ having 36 L. Be it 129 or 137, Matryx Polaris 650s are remarkable trail sleds. To be fair, I have not ridden the 600R MXZ. Mid City Motorsports in Sudbury is still advertising new 2024 Polaris models for $13599 (129) and $1499(137 with 7s display). 

I own both a 900 ace and 650. On trail 650 will be really close. Next week I run them side by side. Wife going to drive Polaris and I drive 900 ace.  Imagine they be within a 1litre or 2 of each other for similar distance driven.  650 is very good on oil too. 

Polaris has a 43.5 litre tank.  XS chassis 900 ace is 40 litres and a g4 or newer doo is a 36 litre tank (unless it’s an expedition or scandic which are 42).  So it could have similar range.  Curious what the math works out to for actual fuel economy.  They will all do 300 kms with one of those linq cans on the back.