PROPYLENE GLYCOL
ANTIFREEZE
TESTER
(DISC TYPE)
99810 – AFT-PG INSTRUCTIONS FOR USE
Read this manual in full before attempting to use the
product and retain it for later use.
1. Scope
This product can be used to determine the level of
protection provided by propylene glycol vehicle
coolant solutions. Protection is dependent on the ratio
of water and antifreeze chemicals in the solution.
Measuring range: -46 to -7°C
2. Health and Safety Instructions
Important: Refer to the vehicle manufacturer’s
manual or the appropriate Haynes workshop manual
before EVERY use.
WARNING! Antifreeze solution is toxic; ALWAYS
read the label. If it comes into contact with your
eyes or skin, immediately ush with plenty of water.
If it is swallowed, drink plenty of water. In all cases,
and seek medical attention immediately.
• ALWAYS wear suitable protective gloves and
goggles when working with antifreeze solution.
• Clear any spillage immediately and with care.
• Wash the tester thoroughly after every use.
• Keep out of reach of children.
Important: ALWAYS dispose of antifreeze and coolant
solutions in accordance with local regulations.
3. Operation
Important: Read the Health and Safety information
before attempting to use this product. ALWAYS allow
the radiator to cool before removing the cap.
To avoid separation of the coolant solution, test the
solution while hot, after bringing the vehicle up to
temperature and then allowing the radiator to cool.
1. Run the vehicle engine to normal temperature if
necessary to mix fresh coolant.
2. Carefully remove the radiator cap using a cloth and
gloves.
WARNING! ALWAYS allow the radiator to cool
before opening it. The cooling system may still be
pressurised when opened and emit hot steam,
which can cause burns.
3. Insert the tester tube into the radiator reservoir and
squeeze the rubber bulb to draw uid into the tester
so that it is almost full.
Important: If the coolant solution is dirty or rusty,
drain, ush and rell the radiator, then clean the
tester and redraw the solution to the uid line.
4. Remove the tube from the reservoir and squeeze the
bulb lightly to expel any air bubbles from the uid.
5. Allow the discs to settle and observe the number of
discs that are oating (see below).
6. Flush the tester with hot soapy water and rinse clean
with warm water after use.
EN
Version 2
June 2022
