I have a 4 ton system how many OZ will needed ?

A/C Zero Leak, as well as other types, uses the amount of refrigerant in a system to determine how much stop leak should be used, not by the size (Tons) of a system. The rule of thumb is 2 to 4 lbs of refrigerant per ton. Therefore, you need to find out how much refrigerant your system operates on. The minimum refrigerant in a 4-ton system would be 8 lb and the maximum would be 16 lbs. A/C Zero Leak dosage is 1 ounce per each lb of refrigerant.

Is this a 4 oz or 2 oz product? Both figures are listed on the same product page.

My bottles contained 4 oz. Not sure if there is a smaller size available.

It says compatible with poe systems. is this compatible with high voltage compressors in hybrids and electric cars?

A/C Zero Leak is compatible with POE oils and A/C systems in hybrids and EVs.

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💨 Seal the deal on leaks before they even start!

INSTANT LEAK SEALING 💧 - Permanently seals minor evaporator, condenser, gasket, and seal leaks without downtime.
ECO CONSCIOUS FORMULA 🌿 - Non-hardening, polymer-free, and environmentally safe—protect your system and the planet.
MAINTENANCE MADE EASY 🔧 - Designed for preventive use and safe to leave in operating A/C systems—no clogs, no worries.
OPTIMIZED DOSAGE CONTROL 📏 - 4 oz treats up to 12-ton systems; scalable dosing for larger units ensures precise, effective protection.
UNIVERSAL COMPATIBILITY ⚙️ - Works seamlessly with POE, PAG, and mineral oil-based A/C lubricants for automotive, commercial, and residential use.

ComStar A/C Zero-Leak is a 4-ounce, silicone-based liquid additive engineered to permanently stop minor leaks in automotive, commercial, and residential A/C systems. Its unique polymer-free, non-hardening formula ensures no clogging or damage, compatible with all major A/C lubricants, and safe for continuous use in operating systems. Eco-friendly and made in the USA, it offers a hassle-free, preventive maintenance solution for systems up to 12 tons, with scalable dosing for larger units.

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Material	Silicone
Brand	ComStar
Package Information	plastic container
Liquid Volume	4 Fluid Ounces
Item Weight	4 Ounces
Item Form	Liquid
Global Trade Identification Number	00024924907009
Manufacturer	ComStar International, Inc.
Unit Count	4.0 Ounce
UPC	024924907009
SAE J300 Viscosity Grade	5W-20
Number of Items	1
Item Weight	4 ounces
Package Dimensions	6.2 x 2 x 2 inches
Item model number	90-700
Manufacturer Part Number	90-700

ComStarA/C Zero-Leak, Permanent "Stop Leak" for A/C Systems, Seals Leaks Instantly, Non-Hardening, Polymer-Free, Eco-Friendly, Made in USA, 4 Ounces (90-700)

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