Visit The Dirt Forum for More Information

Author Topic:   SYN. OIL
YAZMAN
Member
posted February 25, 2001 08:55 PM
I'M BUILDING MY MOTOR NOW,A 355 CHEVY.
I THINK I'M GOING TO RUN SYN.OIL.
I'VE HEARD YOU SHOULD NOT PUT SYN. IN UNTIL AFTER THE MOTOR IS BROKE IN.
MY QUESTION IS HOW LONG IS THE BREAK IN PERIOD.I'VE HEARD IT WAS RUNNING THE MOTOR AT 2000-3000 RPM FOR TWENTY MINUTES. IS THAT THE TIME THAT YOU CAN CHANGE THE OIL AND PUT SYN. IN?


fury
Member
posted February 27, 2001 07:03 AM
The reason that synthetic oil is not reccomended for break-in is that synthetic oil is slicker and has a tendency to wipe off the cam quickly during initial start up.

As soon as you have run the motor long enough to get past the cam break-in period you should be ok to switch.

With all this in mind I have broke in two motors with synthetic and have yet to have a problem.

I use conventional oil currently because I change it after every nite of racing its just cheap insurance and I have yet to have an oil related problem.

Back to the Archives