Last Saturday, I changed the oil in my 95 Ranger. As I was placing the used plastic bottles into the recycling dumpster, I noticed that I had two different viscosity oils, two were 5W30, while the other three were 10W30! Must I drain out & replace with new oil? Please be kind to me, thanks, Jack
No, just drive on.
You’re basically running on 8W-30. Make sure you keep a close eye on the level and keep driving