Forum Discussion

rbs62's avatar
rbs62
Explorer
Dec 23, 2016

Oil additive f350. 7.3 2001

What is best oil additive to add to 7.3 with 171000 miles?
Tow Vehicles
brooks379's avatar
brooks379
Explorer
Dec 23, 2016
I would put Shell full synthetic 5 W 40 OIL in it and nothing else.

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