nailhead66

The 401 nailhead on my 66 GS is of uncertain age/mileage, but is supposedly pretty fresh (i.e., guy I purchased from said the guy ~he~ purchased it from rebuilt it, but didn't have details). Anyway, the car runs fine, but uses some oil; say, around a quart per 1000 miles. Questions: 1) is this excessive? 2) Does anyone recommend additives for reducing oil consumption on a nailhead? and, 3) Since I'm not sure what type of valves/guides were put in during the last rebuild, should I be using a fuel additive to compensate for what ~might~ be original style materials that were designed for leaded fuel?

I've got a 66 skylark gs convertible (401 nailhead). I'd like to occasionally tow a very small vintage Airstream trailer. The car seems to already run on the warm side under a little load (read: going up mountains and/or using the factory AC). Question: assuming my current cooling system is stock (i.e., original radiator and fan set up), what are some of my options for making this car run a little cooler? Bigger radiator? Additional pusher or puller fan? thanks. a.m.