ORIGINAL: jaka
Hi!
5% nitro! All sport engines run perfectly well on just 5% nitro!
10% or 15% nitro is just waste of money!
Agreed.
There is almost no point in running more ( at "normal" altitudes ) in sports planes, other than wasting the cash...
... that is once the engine has been flown a few times.
A 30% or greater savings per gallon too...