aftermarket engine oil additives ______. a) are not necessary b) may reduce the efficiency of the oil c) are…

aftermarket engine oil additives ______. a) are not necessary b) may reduce the efficiency of the oil c) are not recommended for use in ford motor company vehicles d) all of the above.
Answer
Answer:
D. All of the above
Brief Explanation:
Aftermarket engine - oil additives are often not necessary as modern oils already have appropriate additives. They may reduce oil efficiency by altering its chemical properties and Ford Motor Company does not recommend their use as they can potentially cause issues with the engine and void warranties.