New Prime engine break in?

Easy breaking, no hard stops. That will help the brakes forever! Don't let the ICE stay at the same RPM for an extended amount of time. NO RACING!

 

Sorry, that was my dad voice.

 

Given that the driver really has minimal control over the engine RPM in a Prius, I don't really see how this directive from the user guide means much. The correlation between engine RPM and vehicle speed is tenuous at best.

 

I understand where you're coming from. I have heard varying RPM thing for years on breaking in an engine. You can't really downshift to change gears/RPMs in a Prime. Varying speed is the only way.

 

Traffic will take care of that!

Bob Wilson

 

But my my point is that with any Prius, and even more so with the Prime, there is little connection between engine RPM and vehicle speed. The control system either has the engine off and is using the battery to move the car, or sets the gasoline engine RPM to its most efficient RPM, with excess energy going into the battery as charge, and any shortfall coming out of the battery using the electric motors to supplement the power from the engine.

 

Break in has been a myth for at least 40 years. I drove my 1974 Plymouth Duster 2000 miles on the highway, starting the day after I bought it do, and it held up well, for cars of that time.

Posted via the PriusChat mobile app.

 

I figure that would mean over 110 mph.

Posted via the PriusChat mobile app.

 

I had to drive from dallas tx to houston tx in my prime. I just did not speed and was easy on the brakes.

SM-G965U using PriusChat mobile app

 

There is no way to hold the Prime engine at constant rpm. The continuously variable transmission will vary the effective gear ratio and thus the engine rpm changes to keep the car speed constant. Every little elevation change on the road, every change from headwind to tailwind will make a difference in engine load and thus engine rpm.

 

Driving a long stretch of flat road with the cruise set, light traffic, I think you would.