Fluid · Engine Oil
Engine Oil
for 1955 GMC 150 Series 228ci I6 · RWD
Fluid Type
SAE 30 or 10W-30 conventional
Spec: API SB or SC
Capacity
5qt
4.73 L
Drain & Refill
5 qt
4.73 L
Change Interval
2,000 mi
3,218 km
Notes
With filter if equipped; many 1955 models had bypass filter only. Period-correct spec; modern oils acceptable
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