Doesn't heating and rapid quenching HARDEN the metal and isn't the goal for these crush washers to have them a little soft so that they will conform to the shapes of the two mating surfaces (drain plug shoulder and engine case)? If so, why would hardening them help?
The victory oil recommended for both victory and indian us And oil. This oil with extra heat is great. 15w-60I'm debating on buying like 5 of them and storing them until this is figured out. Given the number of Oil threads out there, this debate will go on for a LOOOOONG time unless Victory/Polaris tells us all what is the new approved oil for our bikes.
Which I doubt they will ever do as they charge an arm and a leg for the "Victory Oil Change Kit"