Medium and Heavy Trucks
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You need to have an oil sample performed. If the oil is thin than there could be fuel leaking into the oil and diluting it. The insite program will not show a mechanically failing injector. You should also have a blow by test done to se if the engine is pushing the oil out at running operation. The dyno check is the best way to get his datsa
You need to check the oil level , If it is growing or over full this will be a sign of an issue of fuel/coolant in the oil or a mechanic than did not put the right amount of oil in. drain it down to the proper level or have a sample preformed to find the soured of the cause . Install a manual gauge direct to the engine to see actual oil pressure. That is the true reading. If you have an real oil pressure issue the ecm would throw a Check engine light. Technicians never go by a dash gauge. What is the fault code you are getting? Is it for low oil pressure? Please let me know the code
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what is the engine serial number?