Originally Posted by Mr Nice
Originally Posted by racin4ds
Anyone that owns a force inducted (Turbocharged or supercharged) engine and runs 87 octane fuel deserves it, I don't care what the manual says you can run! Todays engines are very high output / low displacement and with all the turbocharged engines coming out these OEM's are letting the knock sensors and ECM strategies just dial back timing to almost nothing so that they can state "use of 87 octane is permissible"
Cylinder pressures are ridiculous on these engines!! We're talking 9.5-10.5:1 compression with 7-14psi boost!!! If you own a turbocharged vehicle, do NOT use anything but premium fuel!
Yep. + 1000000 %
But buyers want the power of a turbo engine with the least expensive gasoline and oil.
Turbo = premium gas & full syn oils
SAME HERE!!
My 1.6 EcoBoost has a 10.0:1 comp ratio, AND up to
23 PSI of boost out of the FACTORY turbo and tune!
I am NOT going to try and save a few pennies per fill-up, and even think about risking this engine (NO MATTER
HOW GREAT Ford's O.A.R. system may be!), especially not given the way I drive this thing, and during blazing summertime ambient temps.