JEFFCOOL® E300 Series
JEFFCOOL® E300 SERIES
JEFFCOOL® E300 Series
Aluminum Equipment
JEFFCOOL® E300 is an ethylene glycol-based product that
contains a corrosion inhibitor package designed to provide
corrosion protection of high temperature aluminum under heat
transfer conditions. This is important for aluminum boilers and
engines with aluminum cylinder heads.
The formulation also provides protection of standard metals, including cast iron, steel, copper and brass.
Hard water compatibility is improved with JEFFCOOL® E300.
This assists in preventing precipitation and deposit formation.
Inhibitor System
Designed to protect:
- Brass
- Copper
- Solder
- Steel
- Cast iron
- Aluminum
- Other metals commonly found in industrial cooling and heating systems
Sample Test Kits
The kits include:
- Self-addressed shipping box,
- Pre-labeled sample bottle
- Weather-proof self-adhesive product installation tag.
Analyses will be performed on samples after initial filling and
at periodic intervals of at least once per year.

Accepted for use in all heavy duty engines under
these brand names:
- Ajax
- Caterpillar
- Cooper Bessemer
- Dresser-Rand
- Enterprise
- Superior
- Waukesha
JEFFCOOL® E300 SERIES
JEFFCOOL® E300 series

Aluminum Equipment
Inhibitor System
Designed to protect:
- Brass
- Copper
- Solder
- Steel
- Cast iron
- Aluminum
- Other metals commonly found in industrial cooling and heating systems
A foam inhibitor is included to minimize foaming tendencies
during service.
Sample Test Kits
The kits include:
- Self-addressed shipping box,
- Pre-labeled sample bottle
- Weather-proof self-adhesive product installation tag.
Analyses will be performed on samples after initial filling and
at periodic intervals of at least once per year.

Accepted for use in all heavy duty engines under
these brand names:
- Ajax
- Caterpillar
- Cooper Bessemer
- Dresser-Rand
- Enterprise
- Superior
- Waukesha