buno

The dealer put on a new head as a fix for leaking valves. Had the vent hose done first but the symptoms (CEL poor idle) came right back. Should i pay particular attention to anything now or just drive it as usual. My SA says that I should make sure and get gas from Chevron because of their additives. This will help prevent carbon build up. Funny thing is 90 % of the time I go to Chevron because it's right near my house. So, that's not the answer. Is this new head kit an upgrade?

Any info is appreciated