Oil Pressure Gauge Question
So I have appx 1,500 miles on the 2002 Ford Ranger I recently purchased. I just replaced the oil and filter. I went with Full Synthetic (Valvoline... they didn't have Mobile 1 in 5W20 in stock.... i'll switch to that first chance I get).
Today, after driving a couple hours, i was at idle and and noticed the oil pressure gauge "twitching."
I did a little research online. First, I have learned that the gauge on these is basically a glorified dummy light (only registered pressure and goes to half point).
Second, I have found countless forum discussions of this indicator twitch issue, suggesting it's pretty common.
1) Having just changed to Synthetic, I worry that the two prior owners (it now has 81,000 miles) never used Synthetic... that now having it could dislodge debree... and this debree could clog the filter and impede oil flow.
2) That I could have overfilled the engine with oil. Most of what I have read suggests that these 3.0L V6's use apps 4.5 quarts of oil. I used the entirety of the 5.0 Quart jug I purchased. However, I carefully checked the dip stick while filling. And today it still hits right at the max line. So not sure why it used all 5 quarts. And not sure if I had in fact overfilled if this could cause the gauge to twitch.
Any advice appreciated!