- Joined
- Jan 6, 2002
- Messages
- 6,330
- Reaction score
- 2,840
- Points
- 113
- Location
- Pittsburgh, PA
- Vehicle Year
- 2020
- Make / Model
- Ranger
- Engine Type
- 2.3 EcoBoost
- Transmission
- Automatic
- 2WD / 4WD
- 4WD
- Total Lift
- 1.5"
- Tire Size
- 265/70-17
- My credo
- "220, 221, whatever it takes."
The bypass is always open at least a little bit. Not all oil always goes through the filter. As the filter gets more and more full of dirt and restricts more, the bypass opens more and more oil goes that way on the theory that unfiltered oil is better than no oil. For some engines you can get a bypass filter and all the oil gets filtered. I just change the oil every 5k and don't worry about it.That's the thing. You don't want the bypass to open because then you are no longer filtering your oil. So filter changes before they get that clogged are important.
I'm not sure of the oil flow path. Dies it normally go "pump>filter>engine>return"? Or is the filter in the return path. I would hope filter is first thing after the pump as I put it above. So, ideally, you would want a pressure gauge between pump and filter so you can know if you're getting close to bypass pressure; ie; clogged filter. Otherwise, we're just guessing about whether or not we ever get the filter that dirty.