Engineering
Engineering, 29.09.2021 18:00, havanaoohnana

13. An older engine that uses flat-bottom lifters should have an adequate amount/number of in its oil or oil-additive.
A. viscosity
B. ZDDP (zinc)
C. diesters
D. polyalpholefin (POA)

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13. An older engine that uses flat-bottom lifters should have an adequate amount/number of in its...

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