api-tc rated, must be synthetic if you have a 787/800 or 951 powered craft.
Mystik JT4 will also work. A lot of oils that are rated for 2 stroke snow mobiles will also work. Since you are up north in canada, maybe try that route...eh.
I got a premium (or whatever it's called) membership with Amsoil last year, and bought four jugs of Interceptor (premium) oil that I'm feeding my baby. Came out (shipped to my door) to less than what it would cost to buy from the dealer their bombardier oil.
The exact same oil (same code number on bottle) is starting to pop up in Walmart stores in the same silver packaging that the other QuickSilver oils use. If you see this oil at your local Walmart in a silvery grayish bottle, and it says both "PWC" and "FULL SYNTHETIC" on it, it's the exact same oil as the black bottle contains. Note that the full synthetic and the partially synthetic can look very similar and both say PWC on them. So you do have to look closely.not sure if there is a walmart near you, but quicksilver has the right product there, api rated synthetic.
looks like this
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I don't know what engines your SPX has, SeaDoo used both a 717 and a 787 in that model. What oil are you using now?
7-Eleven/Citgo brand 2 stroke oil says it meets API-TC and JASO-FB specifications. Has anyone tried used this?