I do not recommend proactively recharging the a/c system without knowing whether the refrigerant levels are low. However if you are interested in your a/c system status buy / borrow a set of auto a/c manifold gauges and learn how to use them. Based on the age of the Pilot inspect your condenser for loose fins or road damage.I have a 2005 with 166,000 miles. The AC works fine; however, I've never done anything to it and was wondering if it should be proactively charged for optimal performance.
If you're asking me, it wasn't that cold just by feel and got the AC pro. The reading on the AC pro gauge was fairly low and out of the green zone on the gauge and I filled it until it was at the recommended pressure based on outside air temp. Which, just so happened to be in the middle of the green markings on the gauge.Can you tell us your before/after dash vent temp, a/c set to "LO"?