Anyone know where to get 91 octane around Sandusky? The harbour has it , but water depth is a problem to get there. Also what is the story on octane increase additives?

Hard to find, your best bet is Torco Accelerator. Valvtect now has a good octane booster. You can also try Xylene or Toluene, which is available at Menard's, Lowe's or Home Depot.

A guy down here has been running the torco with 89 all season with good results

The Cove has 93 right next to battery park..just got some Saturday...

I've been told in the past that Castaway Bay has it, but considering the water level, thats probably not going to help you much.

They do, but yea... water level when I drve by last week by car... I would not barely take a jet boat back there.... I heard they moved a bunch of boats to Cedar Point due to shallow waters...