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Make
CATERPILLAR
Model
426 Series 1 (Backhoe Loaders)
Engine
D
Year
1989-2001

Application
Recommendation
Capacity (ltr)
Engine (D)
1st choice
Refer To Technical (a, b)
7.0
2nd choice
Gulf Supreme Duty LE 15W-40
Transmission (& torque converter)
Gulf HT Fluid TO-4 30 (c)
10.0
Hydraulics
Refer To Technical (d, e)
38.0
Coolant
Refer to Technical
21.0
Front Differential & Final Drives (Front Powered Axle)
1st choice
Gulf Gear MP 80W-90 (f)
7.5 / 0.8
2nd choice
Gulf Gear DB 80W-90
Grease Points (Molybdenum)
Gulf Crown LCX 2
Grease Points (Multipurpose Lithium Greases)
Gulf Crown LC 2
Grease Points (special purpose high temperature anti friction bearings)
Gulf Gem 1.5
Rear Axle
Gulf Universal Tractor Transmission Fluid 80W
18.5

Lubricant / Capacity Notes

a.
Caterpillar list API CH-4 and API CI-4 as preferred oils and API CG-4 as an acceptable alternative. These oils must meet Caterpillar's ECF-1 specification to avoid reduced engine life. API CF-4 should not be used in Caterpillar diesel engines
b.
Alternative recommendations: -20°C to 40°C, 10W-30
c.
Alternative recommendations: 10°C to 50°C, Gulf HT Fluid TO-4 50; -20°C to 10°C, Gulf HT Fluid TO-4 10W; 0°C to 35°C, Refer To Technical / Gulf HT Fluid TO-4 30; -15°C to 43°C, Refer To Technical
d.
Caterpillar list API CG-4, API CF and CAT TO-4 as alternative specifications. These oils must have a minimum zinc content of 900 ppm
e.
Alternative recommendations: -5°C to 45°C, HY CAT HYDO 20W; 0°C to 50°C, Refer To Technical; -20°C to 40°C, Gulf HT Fluid TO-4 10W; -15°C to 50°C, Refer To Technical; -20°C to 40°C, Refer To Technical / Gulf Supreme Duty XLE 10W-30
f.
Alternative recommendations: 0°C to 50°C, 90; -10°C to 50°C, 85W-140

General Notes

There are no notes to display for this model

Oil Change Intervals

Engine (D)
Months Max
1
Hours Max
250
Transmission (& torque converter)
Months Max
6
Hours Max
1000
Hydraulics
Months Max
18
Hours Max
3000
Front Differential & Final Drives (Front Powered Axle)
Months Max
6
Hours Max
1000
Rear Axle
Months Max
6
Hours Max
1000