I have a 1990 honda prelude, 2.0si. My engine is a JDM b20a, nothing special, just a japan replacement engien. I had the block built by golden eagle it has been godzilla sleeved, 84mm bore, aries pistons, & eagle rods. The head is stock. I am going turbo but before I put the turbo parts on I want to run the engine NA for a few thousand miles to break it in. My question is, what oil should I use? I plan starting the engine with whatever oil is suggested and letting it tun for a few minutes so it can clean everything out, then changing it and start putting miles on it. Any suggestions on what kind of oil? Keep in mind the car will be turbo as soon as I break the engine in. Thank you very much in advance.

 

Can anyone help me out?

 

The motor builder should help

However many people run a non syntheic break in oil and then a 5w30 full synthetic

A couple of race bike builders in my area run there's in less than 30 miles.

 

You can save your self alot of money by running Castrol 5W-30 and change it every 1500 to 2000 miles, And when it's really Hot out run 20W-50 Chances are when you go boost your going to be burn some oil.