TrailJustin
Member
- Joined
- Feb 21, 2025
- Messages
- 138
- Reaction score
- 13
- Tundra
- 2022 Limited DCLB TRD Offroad
Could this be causing the problems with the new motor? This information was posted by a guy on the Facebook pages who was doing some testing with a ScanGauge plugged into the truck while driving.
You can clearly see the issue: at idle, the oil pressure is around 4 PSI. That seems crazy low.
On these new motors, Toyota uses a variable-speed oil pump. This is done to squeeze a little more efficiency out of the engine by reducing drag at idle. The idea is that lower pump load equals better efficiency. However, people are saying that when oil pressure drops that low, the oil may not be sticking to the bearings as well. The theory is that running a thicker oil could help the oil maintain better film strength, so when pressure is that low, metal-on-metal contact doesn’t happen.
Honestly, if this really was a problem and the solution was that simple, you would think Toyota would just come out and say it.
