I used Saber to break mine in at 20:1. Since as was mentioned the synthetic is probably too good for break in, I just broke it in a little longer at 20:1 before I switched to 32:1. I have been running 32:1 now for about 5 tank fulls so next tank I will be going 40:1 and probably stay there for the life of the motor.

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Design is easy, execution the hard part.
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