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.

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Iso-HEET Water Remover & Gas Line Antifreeze, Dry Gas Fuel Additive for Winter & Year-Round Use, Prevents Freeze-Up & Removes Water, Injector Cleaner, 12 fl. Oz

Product ID: 6618410

Details

Brand
Heet
Exterior Finish
Plastic
Inlet Connection Size
2.2 Inches
Inlet Connection Type
Compression
Item dimensions L x W x H
8.35 x 3.25 x
Material
Plastic

💧5x water absorption

❄️Year-round freeze protection

🛠️Universal engine compatibility

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¥1432

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Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

❄️💧 Keep your engine flawless, no matter the season!

TRUSTED FAST STARTS - The #1 brand for reliable ignition in any weather—never miss a beat on your morning commute.
SUPERIOR WATER REMOVAL - Absorbs 5x more water than standard antifreeze for unbeatable fuel system protection.
RUST CORROSION SHIELD - Formulated to protect fuel lines and engine components, extending your vehicle’s lifespan.
VERSATILE COMPATIBILITY - Safe for all 2-cycle, 4-cycle gasoline, and diesel engines—one solution for every ride.
ALL SEASON ENGINE SAVIOR - Prevents freeze-up in winter and removes water year-round to keep your engine running flawlessly.

HEET Iso-HEET is a premium 12 fl. oz fuel additive that absorbs up to 5 times more water than regular antifreeze, preventing freeze-up and corrosion in all gasoline and diesel engines. Designed for year-round use, it ensures fast, reliable starts and extends engine life by removing water and protecting fuel systems from rust.

Specifications

ASIN	B000V4HC7Y
Best Sellers Rank	#2,592 in Automotive ( See Top 100 in Automotive ) #17 in Antifreezes & Coolants
Brand Name	Heet
Customer Reviews	4.7 4.7 out of 5 stars (3,329)
Exterior Finish	Plastic
Global Trade Identification Number	00073905282024
Included Components	Iso-heet Premium Fuel Line Antifreeze Bottle
Inlet Connection Size	2.2 Inches
Inlet Connection Type	Compression
Item Dimensions	8.35 x 3.25 x 2.2 inches
Item Type Name	ISO Heet Anti-freeze
Item Weight	0.15 Pounds
Manufacturer	Gold Eagle Co.
Manufacturer Part Number	770-196
Manufacturer Warranty Description	1 Year Limited
Material Type	Plastic
Model Number	770-196
Number of Ports	1
Outlet Connection Size	2.2 Inches
Outlet Connection Type	Pour
Size	12 Ounce
Smart Home Compatibility	Not Smart Home Compatible
Thread Size	2.2 inches
Thread Type	Standard bottle thread
UPC	073905282024
Unit Count	12.0 Fluid Ounces
Valve Type	check valve

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¥1432

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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