Our Recommendation

Make
PETERBILT
Model
337 4x4 8.3 (PX-8)
Engine
D
Year
2012-
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Application
Recommendation
Capacity (ltr)
Engine (D) (Code: Westport ISL G)
 
27.6 / 45.4
Engine (D) (Code: Westport ISX12G)
 
27.6 / 45.4
Transmission (Manual)
1
 VERKOL SAE 50 TO-4 (a)
12.0 - 14.0
2
 VERKOL SAE 30 TO-4
3
 VERKOL SAE 10w TO-4
Differential (40000 - 60000 lbs)
VERKOL GT-8/80w90 EP (b)
17.5 - 22.0
Differential (21000-23000 lbs)
VERKOL GT-8/75w90 (c, d, e, f)
18.0 - 22.4
Differential (21000 - 30000 lbs)
 
17.5 - 18.9
Differential (40000 - 46000 lbs)
VERKOL GT-8/75w90 (g, h, i, j)
14.3 - 18.5
Coolant (Code: ISL-G)
  (k)
12.4 - 59.5
Coolant (Code: ISX-12G)
  (l)
12.4 - 59.5

Lubricant / Capacity Notes

a.
Alternative recommendations: GO ETN PS386 40
b.
Alternative recommendations: GO DNA 256 75W-90; J2360 85W-140
c.
>-40°C
d.
Alternative recommendations, >-40°C: GO MTR 076M 75W-140
e.
Alternative recommendations, >-26°C: GO MTR 076D 80W-90; VERKOL GT-8/80w90 EP / SALDUBA 80w90 LS / VERKOL GT-7/80w90 EP
f.
Alternative recommendations, >-12°C: GO MTR 076A 85W-140
g.
>-40°C
h.
Alternative recommendations, >-40°C: GO MTR 076M 75W-140
i.
Alternative recommendations, >-26°C: GO MTR 076D 80W-90; VERKOL GT-8/80w90 EP / SALDUBA 80w90 LS / VERKOL GT-7/80w90 EP
j.
Alternative recommendations, >-12°C: GO MTR 076A 85W-140
k.
>-37°C
l.
>-37°C

General Notes

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Oil Change Intervals

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