The first thing to remember is this. Oil doesn't wear out. It gets dirty and contaminated. If you change the oil with the manufacturer's recommended oil weight within 5K miles or a year, you are certainly going to be fine.
The reason it is recommended within a year if the mileage isn't reached, (not 6 months) is simple. Engine oil can absorb moisture from the atmosphere, especially in humid environments. This can lead to the formation of acids within the oil, which can corrode engine components and cause additional wear.
So, if you are changing it every 5K miles or up to 1 year, you are fine. However, a heavier-weight oil is questionable. Remember, the heavier the weight, the longer it takes to move it. Most engine wear happens when it is first started and oil is starting to pump. The manufacturer recommends 5w30 (see pic 1) for this vehicle, so although heavier-weight oil shouldn't hurt (especially if you are in a hot environment) it really isn't needed.
Also, you mentioned the PCV. If it is plugged, it will increase crankcase pressure and moisture to develop in the engine and oil. So, make sure it is in good condition and there are no leaks. See pics 2 and 3 below for testing and location.
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Monday, August 7th, 2023 AT 3:29 PM