A question on fuel for a E-450 ford chassis
My neighbour and I both have Jayco Greyhawks on Ford E450 chassis. The same engine, the 6.8L ford engine. He insists on using high octane fuel, probably octane 94. I was considering using octane 87...
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I'm running a DiabloSport Predator on the 87-Performance tune, plus some additional custom changes to the tuning for even more power. I still run 87 with my trusted brands (Chevron/Texaco, Safeway, Fred Meyer), but I am so close to the edge that some other-brands will cause pinging so I do occasionally spring for 89.
