Quote:
Originally Posted by jkv45
That might be pushing it.
T6 is a Group III and shears down pretty quickly and in hot weather and hard use (racing). Running T6 at the track is fine, but I don't think you can run it as long as some other synthetics, namely Group IV or Group V Esters.
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I ran Delvac 15w40 less than 1400 miles and it sheared(lost 2.7cst) one grade, no track usage and very little hard riding. Just got through running 2800 miles on Delo 400 (50/50 mixture of 30w and 40w) and it had less wear metals, only lost 1cst and had 3.4% fuel dilution, which thins oil viscosity, and that was with over 2x the miles.
Looking into the fuel dilution issue now and when solved I could probably safely run the oil 6k+ miles, and then some, on the street anyway.
+1 on what the others said about changing it more often for track use and I'll tell you why. According to my oil temp gauge, it takes 20 miles(more or less depending on ambient temps) to get the oil up to full operating temp, or the point at which your engine suffers the least wear.
So after a track day, changing the oil/filter rids it of wear metals that you sacrificed in those first few laps that you were giving it the berries!