I've always used Iso-Heet in all of my vehicles in the past, but this is my first Hybrid. What do you all think? Is it safe to use on our vehicles?

Here is the info on it:

http://www.goldeagle.com/brands/heet/default.aspx

#1 selling Brand of premium gas-line antifreeze.
Absorbs 5 times more water than regular gas-line antifreeze.
Cleans fuel injectors and carburetors.
Designed for year round use in all 2-cycle and 4-cycle gas & diesel engines.
Removes water from fuel system.
Prevents rust and corrosion.

 

If your gas already has 10% ethanol in it (as many states do), it's a waste of money.

Products of this nature are only needed once or twice in the spring and fall (when condensation occurs), and only when you suspect water in your tank, not all winter long.

IMO, it's not needed at all these days.

OTOH, maybe you just want to use an injector cleaner a few times a year.

 

Ditto.

Can it be used? Yes. Is it needed? Probably not.

HEET is alcohol, methanol, and/or isopropyl alcohols.

Ethanol is the close cousin and acts similarly.
E10 will remove the water slowly.
You can get a gallon of E85 somewhere for $1.50.

What does HEET cost? About $1.50 per pint I suspect, maybe more.

 

Yes, the regular Heet is methanol, and the Iso-Heet is the isopropyl alcohol. The gas around here has been pretty lousy lately. Many people have been complaining about a big drop in fuel economy. I figured it couldn't hurt, but wanted to make sure. It is 2 for $3 by me.