ATD antifreeze and coolant tester – 1106 handheld ethylene glycol gauge, clear shatter‑resistant housing, easy squeeze‑and‑read

The ATD Tools 1106 is a handheld antifreeze and coolant tester that quickly evaluates ethylene glycol-based fluids, including GM Dex-Cool, so you can spot low protection or contamination before engine damage occurs.

This compact tester gives technicians and DIYers an easy, visual way to assess coolant condition without disassembling cooling systems or relying on complex equipment. Its shatter-resistant clear housing and straightforward operation make it practical for garage benches, service vans, and home workspaces. The tool measures the freeze/boil protection range of glycol-based coolants and helps you decide whether topping off, dilution, or a full flush is needed.

How does the ATD Tools 1106 show coolant protection levels?

The tester uses a simple refractive float mechanism calibrated for ethylene glycol concentrates. When you draw coolant into the clear chamber, the float settles at a mark that correlates to % glycol and the approximate freeze point. Readings give an immediate indication of whether the coolant mix is within recommended protection ranges.

• Float scale calibrated for ethylene glycol formulations
• Visible freeze/boil protection marks for quick interpretation
• Works with common OEM formulas including Dex-Cool
• No power source or chemicals required

Is the 1106 easy to use for non-professionals?

Yes — the tester was designed to be intuitive. Squeeze the bulb, draw coolant, and read the float against the printed scale; no special training is required. The housing is transparent so results are obvious even in low-light garage conditions.

• Simple squeeze-and-draw operation
• Clear markings for immediate results
• Durable construction tolerates routine shop handling
• Reusable for quick follow-up checks

What types of coolant can this model test?

The ATD Tools 1106 is intended for ethylene glycol-based coolants, the most common type used in passenger vehicles and light trucks. It is explicitly compatible with GM Dex-Cool and other ethylene glycol formulas, but it is not designed for propylene glycol or specialized hybrid coolants unless labeled otherwise by the manufacturer.

• Designed for ethylene glycol coolants
• Includes compatibility with GM Dex-Cool
• Not intended for propylene glycol or unknown blends
• Good for routine checks, not chemical analysis

How durable and serviceable is the tester?

Built with a shatter-resistant clear housing, the 1106 stands up to everyday use in busy shops and toolboxes. The simple design means there are few parts to fail, and the unit can be rinsed and reused as needed. Keep spare bulbs on hand and avoid drops from extended heights for the longest life.

• Shatter-resistant clear casing for durability
• Few moving parts for reliable reuse
• Easy to clean between uses to avoid cross-contamination
• Compact size fits toolboxes and service kits

Who this is for: The ATD Tools 1106 is tailored for automotive technicians, fleet managers, and home mechanics who need a quick, low-cost way to verify ethylene glycol coolant concentration and basic condition. It’s ideal for routine maintenance checks, pre-service inspections, and when assessing whether a coolant requires topping up, dilution, or replacement. If you want a portable, no-frills tester that provides fast, visible results for common coolant types, this model is a practical addition to your toolkit.