imported_memnuts
New member
Just a thought.
My C5 will run quite well, if I keep my foot out of it, using 87 or 89 octane fuel but I choose to use the GM "recommended" 93-94 octane for maximum performance and engine protection. Well worth the extra $300-$400 per year IMO to get everything I paid for during my initial investment. I really see no difference in using Zaino (my protectant of choice) properly to receive its maximally performance, especially at the price of a pizza. :nixweiss
My C5 will run quite well, if I keep my foot out of it, using 87 or 89 octane fuel but I choose to use the GM "recommended" 93-94 octane for maximum performance and engine protection. Well worth the extra $300-$400 per year IMO to get everything I paid for during my initial investment. I really see no difference in using Zaino (my protectant of choice) properly to receive its maximally performance, especially at the price of a pizza. :nixweiss