March 20, 20206 yr On 3/17/2020 at 3:56 PM, Zip Tie said: what are the proper break in procedures and what oil should I use for start-up and the first couple hundred miles? I have not rebuilt a Subaru engine yet, but all the V8s, inline 6s and 8s I just use the oil I am going to run in it. NOT Synthetic oil. In your case it would be 5W30. You could use 30W non-detergent oil the first time. That oil will drop contaminants and not carry them to the filter. I change the oil filter after a few hours of running. Then change the oil and filter after a few hundred miles. After that keep an eye on the dip stick. To seat the new rings, I run full throttle through the gears a few times without revving it too high, like 4k. It works best going uphill so the engine spends more time at full throttle. Ride the brake pedal a little if you have to keep the speed down. I've done it that way since I was 12 years old back in 59. Yes, I'm 72. I read it on a set of rings I got back then. It works.
Please sign in to comment
You will be able to leave a comment after signing in
Sign In Now