What grade of gas does your large gas engine require
With the big V-8 and V-10 engines do you have to burn a higher octane than regular unleaded? Back in the days of muscle cars you had to burn premium. Does that apply to big blocks in RVs?
Forum Discussion
My current Workhorse 8.1 runs fine on regular, even the real low grade stuff, like 85 octane which we often find in our travels. My previous Ford V10 used regular, previous to that the 454 used regular. Never noticed a knock even over the mountain ranges we travel out here in the West.
