I put a new (to me) crank, bearings, cam, lifters, rings in my 270 with a full flow oil filter conversion. I am running a K&N 2 stage filter and I used a high ZDDP content break-in oil from Brad Penn (8 quarts) . . . how many miles should I run this oil before the first oil change? I have run the 2000 rpm / 20 minute cam break in and some gentle driving for 50 miles and a few mildly aggressive accelerations in the last 30 miles . . . Getting close to 120 miles and thinking I should dump the oil.
http://www.amref.com/CMSFiles/File/bp_pb/7120_BP_PENN-GRADE_1_Break-In_Oil_PB.pdf
