Our Recommendation

Make
CATERPILLAR
Model
789C (Rigid Dump Trucks)
Engine
DT
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Application
Recommendation
Capacity (ltr)
Engine (DT)
  (a, b, c, d, e, f, g)
291
Transmission
VERKOL SAE 30 TO-4 (i, j, k, l, m, n)
227 / 83.0 (h)
Differential
VERKOL SAE 50 TO-4 (o, p, q)
417
Final Drives (each)
VERKOL SAE 50 TO-4 (r, s, t)
83.0
Coolant
 
662
Hydraulics
VESTA 10w HD (u, v, w, x, y)
Front Wheel Bearings
VERKOL SAE 50 TO-4 (z, ba, bb)
23.0
Hoist & Brake System
VERKOL SAE 10w TO-4 (bc, bd, be)
910 / 420 (h)
Steering Hydraulics
VERKOL SAE 10w TO-4
190 / 129

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, -40°C to 30°C: EO CAT ECF-1 0W-30
c.
Alternative recommendations, -40°C to 10°C: EO CAT ECF-1 0W-20
d.
Alternative recommendations, -30°C to 40°C: EO CAT ECF-1 5W-40
e.
Alternative recommendations, -30°C to 30°C: EO CAT ECF-1 5W-30
f.
Alternative recommendations, -20°C to 40°C: EO CAT ECF-1 10W-30
g.
Alternative recommendations, -15°C to 50°C: EO CAT ECF-1 15W-40
h.
System / Reservoir
i.
Alternative recommendations, Transmission & Transfer Drive Hitch System, -40°C to 20°C: TF CAT TO4 0W-30
j.
Alternative recommendations, Transmission & Transfer Drive Hitch System, -40°C to 10°C: TF CAT TO4 0W-20
k.
Alternative recommendations, Transmission & Transfer Drive Hitch System, -30°C to 20°C: TF CAT TO4 5W-30
l.
Alternative recommendations, Transmission & Transfer Drive Hitch System, -20°C to 10°C: VERKOL SAE 10w TO-4
m.
Alternative recommendations, Transmission & Transfer Drive Hitch System, 0°C to 35°C: VERKOL SAE 30 TO-4
n.
Alternative recommendations, Transmission & Transfer Drive Hitch System, 10°C to 50°C: VERKOL SAE 50 TO-4
o.
Differential, Front Wheels & Final Drives & <32°C
p.
Alternative recommendations, Differential, Front Wheels & Final Drives, <50°C: TF CAT TO4 60
q.
Alternative recommendations: TF CAT TO4 60
r.
Differential, Front Wheels & Final Drives & <32°C
s.
Alternative recommendations, Differential, Front Wheels & Final Drives, <50°C: TF CAT TO4 60
t.
Alternative recommendations: TF CAT TO4 60
u.
-20°C to 40°C
v.
Alternative recommendations, -20°C to 40°C: TF CAT TDTO 10W; VERKOPLUS 10w30 MSA
w.
Alternative recommendations, -15°C to 50°C: TF CAT TDTO TMS
x.
Alternative recommendations, -5°C to 45°C: HY CAT HYDO 20W
y.
Alternative recommendations, 0°C to 50°C: HY CAT HYDO 30
z.
Differential, Front Wheels & Final Drives & <32°C
ba.
Alternative recommendations, Differential, Front Wheels & Final Drives, <50°C: TF CAT TO4 60
bb.
Alternative recommendations: TF CAT TO4 60
bc.
-20°C to 50°C
bd.
Alternative recommendations, -40°C to 40°C: TF CAT TDTOS 0W-20
be.
Alternative recommendations, -20°C to 50°C: TF CAT TDTO 10W

General Notes

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Oil Change Intervals

Engine (DT)
Hours Max
250
Transmission
Hours Max
1000
Coolant
Months Max
24
Hours Max
2000
Hydraulics
Months Max
18
Hours Max
3000
Hoist & Brake System
Hours Max
2000
Steering Hydraulics
Hours Max
2000