A technician notices a swollen oil filter while performing recommended sintenance on a vehicle's engine Which of the following is the MOST likely use of this ballooned oil filter? A. Stuck open oil pressure relief valve. B. Stuck closed oil pressure relief valve. C. Stuck open oil filter bypass valve. D. Contaminated oil.

The most likely use of a swollen oil filter in this scenario is:<br /><br />C. Stuck open oil filter bypass valve.<br /><br />When the oil filter bypass valve is stuck open, it allows oil to bypass the filter and flow directly into the engine. This can cause the oil filter to swell due to the increased oil flow and pressure. The other options are less likely to cause a swollen oil filter.