LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 1985 >> Forward Control 6.2 J, Standard >> Repair and Diagnosis >> Engine Mechanical >> Cooling System (Mechanical) >> Cooling System Specifications >> Coolant Specifications >> Maintenance

Coolant Specifications: Maintenance

Inspect cooling system every 12 months or 15,000 miles. Drain and flush cooling system every 24 months or 30,000 miles. Maintain coolant level with 50% mixture of ethylene glycol based anti-freeze and low mineral content water in all seasons.

COOLANT CAPACITY

Application Quarts (L)
1.9L 9.5 (9.0)
2.2L Diesel
Standard 11.5 (11.0)
Heavy Duty or A/C 12.0 (11.5)
2.5L 10.0 (9.5)
2.8L 12.0 (11.5)
4.3L
Astro/Safari Models 13.5 (12.8)
"C" & "K" Models 10.9 (10.3)
"G" Models 11.1 (10.5)
4.8L
"P" Models 13.8 (13.1)
All Other Models 15.5 (14.7)
5.0L & 5.7L
"P" Models 15.5 (14.6)
"G" Models 17.0 (16.0)
All Other Models
With A/C 18.0 (17.0)
Without A/C 17.5 (16.6)
6.2L Diesel
"C" & "K" Models 25.0 (23.7)
"G" Models
VIN C 24 (22.7)
VIN J 25.6 (24.2)
"P" Models
Forward Control Chassis 25 (23.7)
Motor Home Chassis 24.7 (23.4)
7.4L
"C" & "K" Models
With A/C 24.5 (23.2)
Without A/C 23.0 (21.8)
"P" Models 22.5 (21.3)