Timing belt failed while driving approx 70mph on highway. Shop had to send head to machine shop, replaced several bent valves. Drive car about 80-100 miles, then noticed an oil leak (about 10 drops on driveway in 30 min). Took car to kwik lube for an oil change and a quick look to find source of oil leak. Oil was pooled up in the under carriage engine shield and covering areas on underside of engine(too difficult to locate source of leak). After oil change, amount leaking (fresh oil) seemed to increase.My son has the car out of state, so I can't look at it myself (mechanically inclined, but not a mechanic). Any thoughts on potential for leaks after this kind of repair job? Thanks very much!

 

Since they pulled the head, I would suspect cam seals. Or not properly sealing the cam cover. Or reusing CVVT reset valve gaskets.