25 minutes ago, justgary said:

I think that is definitely more true of ethanol than toluene due to the lower energy density of ethanol.

If I did my math correctly, raising 87 octane to 91 octane with toluene (at 114 octane) requires (91-87)/114 = 3.5%, or 4.5 ounces per gallon.  So one gallon of toluene per 28 gallons of 87 pump gas.

I don't think that's right.   I always used this method:  Sunoco mixing octane link. One gallon of 114 toluene in 28 gallons of 87 octane would only net you 87.93 octane.   You'd need roughly 5 gallons of toluene in 24 gallons of 87 octane to get a 91 ish octane 29 gallon blend.   Depending on where you source it from, toluene can be anywhere from $15 to $50/gallon, aka it doesn't make sense to use as bulk octane booster.   

42 minutes ago, Surferdude22 said:

The noise doesn't happen in neutral either. My friend looked it up and thought it might be a damper plate.

Sadly, I think he's probably right. 

That style distributor cap can malfunction and cross fire. Went thru a lot of them on an old suburban, and a couple on my Response.

1 hour ago, justgary said:

And to answer the question, this is from one of the many Powell/octane threads:

 

I'm pretty sure Halls Crossing fuel dock is closed indefinitely. No premium on the water at Powell. Which is crazy considering how many supercharged tow boats are on the water these days.

11 hours ago, Btown801 said:

Christensen oil in Utah 

Do you buy from their provo HQ? Or is this sold by the pump at certain gas stations?

8 hours ago, Slurpee said:

I did this mod 8 years ago and I’ve known to the gallon ever since - across three new boats - what my fuel level was. Just go fix the problem yourselves. Malibu would charge you thousands. It cost a couple hundred really. 
 

https://www.wakegarage.com/projects-archive/miscellaneous-projects/accurate-fuel-flow-gauge-r110/

Yeah I stumbled on that last night. Pretty neat. I just know I'd forget to reset the fuel gauge when I refill.