right the guy who's building my engine says this
Rob ,
NEVER use any syn products in a motor before its through the breakin time. NOT even blends ! The introduction to ANY syn product to the newly rebuilt bore ring combo will hamper the breakin time. Run motor on the hose for 1 hour bliping it up to 5 to 6 K just to clear the assyembly oil and grease from its throat. Next load up and go to the lake / ocean and run 50 gals of 32:1 mix of QUICKSILVER and pump Super Unleaded motor gasoline varying the rpms and stop every once in a while letting the motor cool and starting back up and continuing. Once the 50 gals is burned retorque the head to 38lbs and add new plugs and run the syn @ 32:1 on a 8K plus motor and 40:1 on a 8K minus motor ! NEVER EVER double oil a motor during break in it will cause the motor to run hot and lean due to the thick viscosity of the fuel oil mix
Good luck............