Recent content by Kayelmi

In a vehicle, stay off the gas. Drive it easy. No hard pedal stuff, no towing/hauling heavy loads…. I believe for the first 1000 miles.

I do find a lot of the break-in procedure interesting. In testing we run a fixed rpm and increase load…. then increase rpm and sweep through the load again. Our break-in is 40 hours. Obviously that isn’t how you can operate a car, Flooring it before break-in could be an issue, but the reality...

Very close! Thanks for the civil conversation. I love what I do, but I know that, as a down to earth regular kinda guy, I have picked up a lot of engineerese over the years. There is just a lot of misinformation out there and I am here to help where I can. Believe it or not, a majority of...

I think it is somewhat a play on words. Rich means below stoich. Technically the engine “runs” lean. If you inject fuel to reach lambda=1(stoich), some of that fuel is lost to the oil, leaving the mixture lean. That being said, there are several other things occurring that make it seem rich...

Not true. Ecoboost engines do not run really rich on cold starts. Also, during the break-in period you will get more fuel dilution because the rings aren’t fully seated. If this concerns you, two pieces of advice from someone that tests these engines for a living. Wait for your rpms to go...