- Joined
- Dec 16, 2016
- Messages
- 1,035
- Reaction score
- 864
- Points
- 113
- Location
- Denver
- Vehicle Year
- 2009
- Make / Model
- Ford Ranger FX4
- Engine Type
- 4.0 V6
- Transmission
- Automatic
- 2WD / 4WD
- 4WD
I would put some Motorcraft semisynthetic oil in it and take it on a 3 hour drive. I have had great experiences with loosening stuck rings and removing varnish from lifters by just using that Motorcraft oil and making at least half hour drives regularly for a couple months. I would do that and see what happens before I tear into the engine, because these engines at 200k miles typically still have crosshatch marks visible on the cylinder walls.