Q: What could be causing a constant knocking /rattling noise coming from my engine? on 2001 Dodge Dakota

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The knocking /rattling noise happens from start up, when idle and when I accelerate. It was not that loud at first but it has started to get louder. I noticed it about a month and half ago after an oil change.
(2) Answers
(6) Comments
i suggest you get a car diagnostic tool check your engine,
which one to get, it depends on your car model and year
The oil is full now, I checked it yesterday and there was barely no oil. They used Valvoline 5W-30, I put in about 3 qts. of Pennzoil 10W-30.
Thank you for your responses, I appreciate the feedback. The oil light never came on and there was still oil pressure. It will be a few weeks before I can get it to a garage. Will I be causing further damage by driving it, please forgive me as I am not very knowledgeable when it comes to vehicles.
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