Premix vs Two Stroke Mix - Comparison Inside the Saw

[Crocky]

I thought I’d share a few photos of a couple of saws I tore down, for port work, a while back. Two Husqvarna 572xps. One ran on Aspen’ one ran on Super unleaded and Moto 800 at 50:1. 

[Crocky]

50:1

Aspen’

[Crocky]

 

Piston on the left is run on Aspen’

[Crocky]

50:1

 

Aspen’

[Crocky]

 

50:1 bottom end with plenty of oil. 
 

 

Aspen’ bottom end that looks dry. 

[Dan Maynard]

The aspen is really expensive so that one hardly ran? 

 

Just joking - aspen impressively cleaner in the cylinder and exhaust port.

[Crocky]

11 minutes ago, Dan Maynard said:

The aspen is really expensive so that one hardly ran? 

 

Just joking - aspen impressively cleaner in the cylinder and exhaust port.

😂 that’s probably the case.
 

It’s the bottom end that bothers me. Doesn’t look like it gets enough oil. Def cleaner burn though.  

[Excels1or]

I'd rather run 50:1, save the money I'd have spent on Aspen, and bought a new saw

[Mick Jones]

Interesting pictures. I would agree the bottom end looks dry. Personally i have run all my saws / brushcutters for 20 years plus on 40:1 on unleaded and a decent quality 2T oil without seizures due to lack of lubrication. Always nice to see a slight film of oil on components when working on a 2 stroke motor. I have never used Aspen but i can see as an operator the lack of fumes while working would be a big plus.

[Whoppa Choppa]

16 hours ago, Crocky said:

 

50:1 bottom end with plenty of oil. 
 

 

Aspen’ bottom end that looks dry. 

Would you summise that the 2 stroke oil that Aspen use in the premix is at fault or rather that the burning character of aspen (hotter?) removes the oil film? Would it therefore be better to use Aspen 4 but add your own superior quality 2 stroke oil?