how do i use it ? is it safe for any car ?

I use it in combination with Marvel Mystery oil to make an fuel system cleaner. 5 parts MM to 1 part Heet. Works well in 3 cars I own - 2 Japanese and 1 German made.

Red bottle versus yellow bottle?

I hope 5 years later David was able to find a new job. You can use this in any gasoline or diesel engine. The difference is the ISO (red bottle) contains isopropyl alcohol. The yellow bottle contains methanol. Isopropyl alcohol evaporates faster therefore removing the water faster. Methanol is better at lowering the water's freezing point. They both do both but just different ways.

Can I use these in my Yamaha outboard?

Yes, any motor,engine that runs on gasoline, I used it on a snow blower

Isopropyl vs methanol Heet for removing water, one combine the water so it can be burned out, the other does not. Anybody know which one?

At one point isopropyl was the only one recomended for fuel injected and other engines. I think it has less acidity than ethanol and methanol. It is the only one I keep in stock because it's safe and effective in all engines. I don't have to worry about someone using the wrong one.

ASIN	B000V4HC7Y
Best Sellers Rank	#180,717 in Car & Motorbike ( See Top 100 in Car & Motorbike ) #190 in Automotive Cleaner Oils & Fluids
Brand	Heet
Brand Name	Heet
Connector Type	Barb
Country of Publication	USA
Customer Reviews	4.7 out of 5 stars 3,043 Reviews
Exterior Finish	Plastic
Global Trade Identification Number	00073905282024
Included Components	1 Fuel-Line Anti-freeze Water Remover and Injector Cleaner
Inlet Connection Type	Solvent
Item Dimensions	21.2 x 8.3 x 5.6 Centimeters
Item Weight	68 g
Item dimensions L x W x H	21.2 x 8.3 x 5.6 Centimeters
Manufacturer	Gold Eagle
Material	Alloy Steel , Metal
Material Type	Alloy Steel, Metal
Model Number	770-196
Number of Ports	1
Outlet Connection Type	Barb
Size	small
Specification Met	iso
UPC	073905282024
Unit Count	355.0 Milliliters
Valve Type	Swing Check Valve

ISO Heet 28202 Premium Fuel-Line Anti-Freeze Water Remover and Injector Cleaner (355 ml)

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