driving on Low RPM

[RedRide]

Originally Posted by detroiter

You'll know your lugging the vehicle just as Hilton stated, you'll have next to no power/pull, car will be shuddering and feel like it's gagging to stay alive. As long as the car is running and pullin smooth, your smooth sailin

It's not a question of the enging running "smooth". Modern ECUs will always adjust things (timing fuel,etc) to make the enging run smooth.
The issue is subjecting the wrist pins, con rod bearings etc, to extra stress. Like I said, it's simple, elementry physics.