Filling Cooling System; Caution When Adding Coolant; Caution When Replacing Coolant; View Of Coolant Reservoir - Mazda 1983 RX7 Service Manual

ARTICLE BEGINNING
TECHNICAL SERVICE BULLETIN

ENGINE COOLANT

Model: ALL MODELS
Bulletin No.: 008/87
Date: 7/16/87
Category: 3
DESCRIPTION
The proper level for the coolant is between the "FULL" and "LOW" marks
on the coolant reservoir. If the level is below the "LOW" mark when
the engine is cool, add enough 50/50 mixture of water and ethylene
glycol anti-freeze mix to bring the level up to or near the "FULL"
mark. Do not overfill.
In addition to freezing protection, ethylene glycol provides corrosion
protection for aluminum engine parts.
Fig. 1:

View of Coolant Reservoir

CAUTION WHEN ADDING COOLANT

1. If water only is added, the mixture ratio of coolant will be
reduced, which may result in the following:
* Rust or corrosion in the engine.
* Water leakage or overheating caused by rust or corrosion in the
radiator.
* Water leakage due to corrosion of the water pump at the seal.
2. If the reservoir is overfilled, a rise in coolant temperature will
cause expansion of the coolant volume, which will allow some
coolant to overflow. The customer may misunderstand this overflow
to be a mechanical problem.

CAUTION WHEN REPLACING COOLANT

After replacement, set the heater control lever to the "HOT" position
and warm up the engine to the normal operating temperature (Thermostat
FILLING COOLING SYSTEM CAT. 3, NO. 008/87
Article Text
1983 Mazda RX7
For www.iluvmyrx7.com
Copyright © 1998 Mitchell Repair Information Company, LLC
Saturday, September 08, 2001 09:18AM