Did you know?5.3L 'Vortec' 5300 V8 with Active Fuel Management, 320 hp (239 kW).
0 Members and 1 Guest are viewing this topic.
I have used Valvoline's synthetic since new in this Av, the GMC Sierra and the S-10 I had before it and haven't ever had any problems. The S-10 had 218K on it and the person I sold it to has put another 75k the last I heard.