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
wa8yxm wrote:
I do not think they make a production engine any more that needs more than Regular (87 octane) gasoline.
now if you go out and buy a high performance sports car.. With the custom higher performance engine option, and you modify the engine on top of that.. Perhaps.
But for what I call production engines, Used in normal cars, trucks and motor homes... I think they all burn regular.
Only exception I know of is the Chevy Volt.
There are a large number of turbocharged and supercharged regular production vehicles (not motorhomes) that require 91 octane gas as do most motorcycles.
The Ford Ecoboost engines are a broad exception, they all run on regular gas despite the forced induction due to Fords patented use of exhaust gas recirculation to control flame front propagation. This is one of the main technologies that makes Ecoboost engines different from other generic turbocharged small gas engines.
