You have just invested quite a bit of money in a New or Rebuilt engine for your vehicle. The First thing that you can do to insure your investment is to break in your engine properly. It’s a pretty simple procedure, but very, very important. When an engine is rebuilt, the process of boring and honing the cylinders leaves slight ridges on the cylinder walls to help oil adhesion. The rings wear into these ridges forming a seal. This is the primary purpose of break in.
1. Fill your cooling system with coolant and let sit for 2 hours or so with the radiator cap off. This will purge a lot of trapped air in your cooling system.
2. Install a premium oil filter. Do not use a cheap oil filter. Install a high quality 10-30 petroleum based motor oil, along with a bottle of Break In Oil Additive. The additive is included with every new or rebuilt engine purchased from EnginesUs.