I would watch the level closely for a couple days and see if it "burps" more air out of the block...... might help to squeeze the hoses to try to get it to burp the air out too. Then if the level is down just add a little more. You probably have it filled and the air out if you drove it that far..... I think the 240 is pretty easy to change the coolant on.

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1985 300D Turbo ~225k
2000 F350 (Powerstroke) 4X4, SWB, CC, SRW, 6spd ~148k
1999 International 4900, DT466e (250hp/660 ft/lbs), Allison MD3060 ~73k