Generation IV Internal Engine - breakin oil weight vs bearing clearances




IKnowtheFuture
11-05-2011, 05:53 AM
i have an LME 370 with main bearing clearance at .0025" and the rods at .0022".

I am considering comp cam break in oil as they have it at jegs for $5 a quart, they have 10w-30 and 15w-50. I always use to run 10w-30 on my old motor, but it was stock with oem tolerances, but idk if I require 15w-50 with my new motor.

I live in NC and its getting around 45-55* outside for the past week or so, so cold weathers starting to come around.

Anyone have better results with running a heavier or thinner oil just for breakin purposes?

Anyone have a good reputable opinion on this?


Shawn @ VA Speed
11-05-2011, 10:07 AM
What was LME's recommended break in oil? I would always ask the engine builder what he prefers.