Break-in fluids
After tha cam is successfully broken in, how do you guys continue to break the engine in?
After the cam is successfully broke in, change out the oil and filter. Another batch of good 10w30 break in oil like Rotella T4.
Then take it out and run it and bring it up to temperature, then work it getting it good and warm so that the rings expand out and cut into the cylinder bores mating up to the cylinder walls. The 10w30 is thin enough to wash all of the "Fines" out of the cylinder bores as the rings are cutting in.
There is this theory that you want enough RPM to put a stretch to the pistons and rods so the rings will cut the longest dimension in the bores, as ultimately this is where the top ridge in the cylinder starts to form over time.
Giving the rings a nice cut glide zone because they are not hitting the top "Ridge"
area of the cylinder walls from Babying it during break in and not giving it the stretch.
So yes take it out and work it good for the next 500 miles of the break in, without over reving it creating undue vibration and harmonics that disturb a nice uniform break in.
After 500 miles change out the oil and filter again and continue on for the next 1500 miles, then it is usual oil changes after that.
After the first 500 miles you can cut the oil filter open to inspect what is coming out of the engine, and double check that there is no excessive steel in there. When all checks out you are good to go.
Happy Motoring . . .
