5w30

Hey chicos, So I have always used Mobil-1 10w-40 full snyth 4t racing oil. The thing is, it is a track bike only and I change the oil every 3rd track day or so. At $70 per 6 quarts, it is an expensive change. I see I can get the Mobil 1 5w30 full synth for around $26 per 6 quarts. Due to the...