Im going to try and do a full OLM change with my Accord. I have heard and read many recommendations to change out the PCV valve on the 2.4 because the "spring" breaks. I honestly dont know the full extent of what the PCV does, do I need to change it? My driving style is 95% 1 miles trips so I would like to have the oil as clean as possible while I do this OLM oil change. Is it worth changing or just keep driving? Also, about how much would this be at the dealer. Im at 114,500 miles now. Is Pennzoil Platinum 0w20 a good oil to do the OLM change with? It calls for 5w20 but Honda back spec'd 0w20 for my car. Running Pennzoil Platinum 0w20 and A02 filter.