Our Recommendation

Make
PETERBILT
Model
EPA 2021 579 (CNG) (ISX12G)
Engine
C
Year
2021-
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Application
Recommendation
Capacity (ltr)
Engine (C)
 
45.4
Transmission (Manual)
VERKOL SAE 50 TO-4 (a)
12.0 - 14.0
Transmission (Semi-automatic) (Code: Advantage)
 
7.5
Transmission (Semi-automatic) (Code: 10-18 speed)
 
13.0
Axle (MERITOR & Tandem rear axle & 40000 - 60000 lbs)
VERKOL GT-8/75w90 (d)
16.3 / 18.5 (b, c)
Axle (DANA Spicer & Tandem rear axle & 40000 - 46000 lbs)
VERKOL GT-8/80w90 EP (e)
17.5 - 22.0
Axle (DANA Spicer & 21000-26000 lbs)
1
VERKOL GT-8/80w90 EP (f, g)
17.5 - 18.9
2
SALDUBA 80w90 LS
3
VERKOL GT-7/80w90 EP
Coolant
  (h)
25.1

Lubricant / Capacity Notes

a.
Alternative recommendations: GO ETN PS386 40
b.
Differential, front, 18.5 litres
c.
Differential, rear, 16.3 litres
d.
Alternative recommendations: GO MTR 076M 75W-140; GO MTR 076D 80W-90; GO MTR 076A 85W-140
e.
Alternative recommendations: GO DNA 256 75W-90; J2360 85W-140
f.
Preferred lubricant specification
g.
Alternative recommendations: GO DNA 256 75W-90; VERKOL GT-7/85w140 EP
h.
De-ionised water with 50% anti-freeze & >-37°C

General Notes

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Oil Change Intervals

There is no Oil Change Interval data to display for this model