Is it safe yes, but why do so, a desent bottle of octane booster will cost you 4 bucks, I rather spend that money on better gas. Most octane booster contain 110 octane which honstly I'd buy 94 or 93 octane. If you are talking about fuel injector cleaner, yes that's safe too.
Yes you can. It will always be cheaper to just buy the 91 octane though so you'd be wasting your money.
A higher octane gas or an after market octane booster. But, if your car/truck is knocking, then something is wrong, either your timing is too far advanced or something more in depth..
91 octane
" regular " unleaded , 87 octane
" regular " unleaded - 87 octane
As long as your baby can sit up on her own for long enough to eat, without toppling or falling forward, it is safe to put her in a booster seat. Make sure the seat has some way to secure her so she doesn't fall out.
Yes.
87 octane regular. The use of any higher octane will provide no benefit whatsoever and is a total waste of money.
check the timing then put two things of octane booster and fule injector cleener. Also check the plug wires.
The best octane to put into an 08 Sportster 883L is 91 or higher, according to its manual. This will result to an average 50 mpg.
put more in or get a new car
no